Amperes

Im kind of interested in messing with some basic electronics (which i know very little about) and my question is if I have 2 dc devices that have a 900ma draw on both like 2 cell phones .... do I need 2 separate circuits that can handle the individual loads or do i need 1 circuit that outputs say 2a they both take what they need from?

Topic by cbubel   |  last reply


solar cell amperes

Lets say I have a solar panel that gives off 5 volts at 30mA. if I were to put a ten ohm resistor in series with it would There be basically no effect because a 10ohm resistor woulkd limit it to half an amp, which is way more. Or does the solar panel act like ~ 167 ohm resistor, and adding a ten ohm resistor will limit it to 28mA?

Topic by guyfrom7up   |  last reply


Supplying amperes on fan? Answered

Hey, I'm just wondering if I were to plug in two fans rated at 12V .1A to a 12V 1A power supply, would the extra .80A will overload out the fans? Or will the fans only draw what it will need? And for other simple devices like LEDs, will this apply?

Question by BIO Wolf   |  last reply


I need help with amperes !!

I don't know about ampere and I need help! can someone please give me some tips or something? please help!

Question by zhengguang   |  last reply


can i increase 200a to 5a?

Plz help me,, i have a 12v 200ma dc adapter and i need to transform it into 12v 5a dc adapter.is it possible? i

Question by akhil s   |  last reply


what does peek ampere mean? Answered

Hey! Well, I have a 36v500w motor which requires ~14A basically. now i want to buy this controller: http://www.aliexpress.com/item/Dual-Motor-Driver-Module-board-H-bridge-DC-MOSFET-IRF3205-3-36V-10A-Peak-30A/2035641966.html which states Dual Motor Driver Module board H-bridge DC MOSFET IRF3205 3-36V 10A Peak 30A so it is above 10A and under the 30A is it ok to constantly use it on 14A?

Question by benf3   |  last reply


how do you get from Ampere to Ampere hours? Answered

I know, basically it's not too diffy. I checked wikipedia and in the end i get to Coulomb, but the information i need is: i wanna build these cat-ears: https://www.instructables.com/id/Animatronic-Cat-Ears and as material one needs a LiPo battery - the guy says "anything that will be able to supply 3A worth of current" and links to a 800mAh-battery at hobbyking. I first bought a battery with 4000mAh, say a battery that gives 4A per hour, but the one i got is quite heavy and i doubt that it's a good idea to use it in this light-weighted project - so how the hell did that guy get from a 800mAH-battery to the 3A worth of current? How do i calculate this way?

Question by Luziviech   |  last reply


Is a high ampere switch necessary?? Answered

I was going to try to build my now 2nd coil gun but this time wanted a solid state switch. after looking at the following: https://www.instructables.com/id/50-cal-Coil-Gun/step3/The-Design/ i was wondering if an 800A SCR is really necessary or can i just use a 16A SCR?

Question by MadScientist101   |  last reply


Question regarding LEDs and Amperes? Answered

Hi guys,             I want to build a project which has 3 blue leds which will take in almost 9 v. I could just use a 9 volt battery as it would be cheaper and easy but I want more mAh. So I have a few questions regarding if I use 6 AA batteries instead. 1. All of them connected (+ to -) will give me approx. 2500 mah and 9v right? And as 3 LED's would take about 3v 20 mah each, how much run time would 6 AA batteries give me? 2. How much run time would I get with the 9v battery? As it is only 400mah I think Thanks in advance -A Prickly Potato

Question by The Prickly Potato   |  last reply


Do Amperage Ratings Add in Parallel or Series? Answered

I was wondering if the amperage ratings of devices, say, for instance, circuit breakers, add in parallel or series. For example, if I hooked up 5 20 Amp circuit breakers in parallel, would it take 100 amps to trigger them all? Or would it take 100 amps with them in series to trip them all? I'm not sure about this because I have used two 1 amp solid state relays in series to switch loads well above 1 amp, but it seems more logical for them to only do that if they were connected in parallel. Also, whatever the answer to my question is, does it apply to all devices? Circuit breakers, Triacs, etc? Thanks!

Question by mad magoo   |  last reply


How can i increase amperes ? Answered

I am making a college project for science fair, and i have made a generator with DC motor of 24v, 0.33 amp and 7.92 watt. When i rotate the motor it gives 24-27 volt of dc voltage. Now i want to convert that DC voltage into AC by connecting a converter of 12 volt, 7 amp. I have made i rectifier which converts the 24 dc into 12 dc voltage, but when  the converter does not start. Can you please tell me what may be the faults? If the apms  are less, can i increase the amps? If the amps are 0.33 can i increase them to 7 amps?

Question by RobbyS13   |  last reply


what will happen if i give dc 12v and 5 ampere to 2000watt inverter , how much ac ampere should it produce ?? Answered

I now what inverter does it convert dc to ac , i also know that it can convert dc 12 volt to ac 120 -110 volt but  the thing from which i m confused with is that what will happen to the ampere for example i have a 12 volt 5 ampere battery if i plugged the battery to 2000 watt inverter should it produce 2000 ac watt with just 12 volt and 5 ampere battery or i have to give more dc ampere to the inverter................ means can inverter    convert dc less volt to ac high volt  and  with also convert dc less ampere to ac high ampere   or will it convert  dc low volt to ac high volt without changing the dc low ampere and need more dc ampere or will it convert dc low volt to ac high volt with decreasing the dc ampere....

Question by MuhammadK19   |  last reply



Combine 2 powerbanks for mobile

Hello, I have 2 old powerbanks that didn't have enough cappacity. So I want to combine the 2. But both have 5v 800ma output. So if I am afraid that the voltage or the ampere will be to high. How can I combine the 2 without damaging my phone? Sorry for my bad english. Greeting, Thijs

Topic by Thijsd4   |  last reply


how many voltage means one ampere? or how much voltage equal to 1 ampere current. how to convert it.?

Please tell me convergence of voltage and current. how much voltage equal to one ampere?

Question by sonambekar   |  last reply


how could i use the energy of my energizer 15 minute AA/AAA for another application?

I was hoping to hook this up to my hydrogen electrolysis cell for some experimentation.

Question by GalaxyX   |  last reply


how to power multiple fans from a laptop? Answered

I'm currently working on a laptop to somewhat of a desktop conversion.  The laptop has really bad cooling so i have drilled into the case and added some big fans.  Its probably overkill yes, but if it works then who cares.   I've added two fans.  One is a 24V DC .20A fan and the other is a regular DC motor.  I'm wanting to power them from the laptop.  I'm not sure how to do that though.  I've tested them both separately on a USB and they are very slow and almost useless.  Is there a way to combine two USB ports for more juice?  Any ideas or suggestions?  Thanks.

Question by knex.gun.builder   |  last reply


Making a better spot welder....

I am in the process of building a proper spot welder from scratch. Proper more in terms of the electrical and electronics part but not so much in looks ;) My problem now is to find useful info on what power levels are required for certain tasks. I realise that welding thin sheet metal won't need as much time and amps as welding a 3mm stainless steel rod - but what is a "good" power level? I watched a bunch of Youtube videos showing various approaches but for many it seems the producer had no clue about the difference between creating a short with burn marks and a weld... Especially when it comes to creating battery packs with a capacitor bank as the main power provider you can clearly see the device burns holes but does not really create a welded spot. On the other hand there are a few videos showing spot welder made from a MOT that seem to produce a proper melted and welded connection. When I used a proper spot welder at work it had timing settings, power levels and even a feature to adjust how the current rises.... Not to mention a gauge that checks the pressure and only activates the welder once the set point is reached... There is a ton of info out there that after a thausand words still tells you nothing you need to know :( So is there anyone here who can shed some light on the actual process of spot welding in easy words for everyone to follow? I am aiming for a max output of around 400A @ 1.5 -2.5V with an adjustable shunt in the transformer core to avoid oversaturating the core. In a later stage I will add power control over the primary side but until then it is only time control, from a few ms to a max of 5sec if the damn controller arrives one day. Big questions: 1. Is a power control really required or is it possible to cater from thin to thick just by using different timing settings? 2. Since a MOT is used for the power supply: Is it better to leave the shunts out to fully avoid saturation by adding an inductor in line with the primary or is it still better to adjust the shunts under load to get the maximum power possible? 3. Aluminium and other materials benefit from using AC but would be good to have a DC output too, if so then what materials really need DC? 4. All I could find is that copper is used for the electrodes, due to resistance and heat transfer - are there other options apart from using copper? 5. Tricky one: I would prefer to use the secondary winding as the new primary to avoid core saturation and to lower the load on the power outlet. Where can I find very thin copper bar material that I can coil up and insulate as I would quite a few more turns to get at least 1.5V out of it? Just don't like the idea of spending days rolling a copper bar thin enough.... For the advanced model at a much later stage: Of course I would like to be able to use a proper power control instead of a motor dimmer or similar. For obvious reasons an inverter microwave jumps to mind. But after checking one I noticed one big problem: there are not really that many windings on the primary of the transformer at all! Same way our modern switchmode power supplies only use a few turns these things do exactly the same. After some quick and dirty initial tests I realised that even a single turn of thick wire already results in over 20V on the secondary. Wasted a lot of wire and time making one coil with 5 turns less and one with 10 turns less but the system would not even start with it. Seems these things need a fixed inductivity on the primary that matches the frequency used, in my case 36kHz. Would love to overcome this problem so I can at least go down to a single turn to get under 5V on the output side as space is non existing on these inverters. Can I cheat? Do I need to change the circuit to match the new primary coil? Am I thinking in the wrong direction altogether here? And added bonus would be to be able to adjust the power from around 15% to 100%, so far the electronics don't allow anything below 45%. Is it possible to drive these inverters in resonance? (Ok, off topic as I would like to use this for a beefy HV supply) Last thoughts: I know people already used Arduinos and Raspberries with displays and all but so far I have not found anything that shows how to do it properly. Seems all that counts is to create connection one way or the other and to call it a spot weld even if it is just a burn hole from discharging a capacitor bank through a needle like electrode.... For obvious reasons I don't want to create just another spot welder that makes a professional pee himself laughing about it. IMHO nothing beats personal experience with something but I don't really like wasting my time by trying what other people alread did a long time ago. So if YOU already built a MOT based spot welder and used for more than a few spots I would love to hear from you! Let me know what type you used, what problems or shortcomings you noticed or where you feel it just does not work out the way you expected it. From simple things like always getting bad sparks or arcing, over how easy or hard it is to get consistand results to whatever really annoys you while using your homemade spot welder. I hope that your feedback here will help me to write an Instructable on building a spot welder that does what you expect it to do, not once or twice, but everytime you use it. Mechanics might vary the same way the electrode style does but the weld should always be a proper weld that won't tear apart ;)

Topic by Downunder35m 


How to measure verry smal current (amperes) with multi meter?

Hi I'm trying to measure how much current can be generated from tomatoes. Please have a look at http://maaikedevos.blogspot.com and my question will make a lot more sence. What option should i use ( 200u, 2000u, 20m, 200m) if i use 20 on the voltage and i want to use the formula W=VxA ? It seems to me that the measuring in itselfs alters the numbers. The brightness of the LED changes. What is happening here ? How can i measure amperes ? On the picture: 1/ LED hooked up to a battery. Multimeter placed in series to measure the current. (the LED seems to light up but this is reflection) 2/ I turn the multimeter to 200m, the LED lights up very brightly. On the display: 03,8 3/ Multimeter is turned to 20m, the LED lights up. On the display: 3,29 4/ Multimeter is turned to 2000u, the LED lights up. On the display: 1197 5/ Multimeter is turned to 200u, the LED lights up but not verry strong. On the display 1  . Thanks to any one who can explain this to me in clear language. This are my first staps in elctricity-land. greetings, Maaike

Question by dr zeezucht   |  last reply


How to increase amps?

I heard ampere could be increased by capacitor. If true then how to do it???

Question by simba1   |  last reply


Pararel connection Transformer

i want to combine two of 10 ampere Trafo, so i can have 20 Ampere power supply  i read a few article that say if we connect the sekunder(secondary) of identical Transformer in pararel, we can have a double time current flow on this connection. do anybody have try this before?

Question by beatobe   |  last reply


Is it possible to increase motor speed by adding current?

Hi there, I want to increase my 5 volts cooling pad speed by hacking it. I've tried increase the voltage, but the motor died after next hours. I have a plan to increase the current without increase the voltage, but it's doubtful to be worked. Somebody got any idea? Thank you

Question by AthaariqA   |  last reply


Can i use a laptop charger whose input and output ampers are higher than my original charger?

My original laptop charger is not working can i use New charger whose input is 100-240v-2.4a (2.4a) 50-60hz and output 20v(20v)== 4.5a(4.5a) insted of my original cahrger whose input was 100-240v~1.7a 50-60hz and output was 20v(20v) == 3.24a(3.24a). As you see there is difference in input and output ampers

Question by AbdulR138   |  last reply


Differences between a 75 and 65 watt power supply? Answered

The problem is this: I found another laptop power supply rated at the same voltage but slightly different amperes and wattage. Specs: Acer 19 V 3.42 A 65 Watts (guessing due to V x A = W) HP 19 V 3.95 A 75 Watts I tested both and their voltage seems fine and nothing wrong with the older 75 watt power supply with two pongs. Will there be an issue with the wattage differences? And will the amperes be a problem if my laptop is rated for 19 V, 3.42 A?

Question by BIO Wolf   |  last reply


3 volt voltage regulators?

Hi,I need a 3 volt voltage regulator,1 ampere(or lower).I tried looking for Lm 7803 but couldn't find it any local shops.Anyother alternatives?

Question by Adarsh_tronix   |  last reply


where can I find a power supply which has a 12 volts and 3 amperes output?

I am looking for a simple circuit diagram and the name of the devices to be bought

Question by belovebluesky   |  last reply


effecient charger making?

I wanna make a charger for 4v, 0.5A batery 1)just suggest me the value of capacitor and inductor for filter ckt 2) and wat ampere of current should be sent to battery for fast recharging (at safe zone

Question by electrical sniper   |  last reply


convert to watt?

I am thinking of buying a acid battery. Its specification says that it is a 12 volt one and it's AHC@20 is 200. Can anybody calculate the watt output. I am not sure but AHC stands for Ampere hour capacity. Thanks RajibAzam

Question by RajibA   |  last reply


Pico fuse help?

Dear all.. By accident (short circuit) the pico fuse  in my watt meter is blown . Could you help me to know value of ampere (ie: 250v 1/4 amp...) of this pico fuse. the dimension  and color code in photo please. In the time waiting your help can I used glass fuse for replace .Thank you so much

Question by lam   |  last reply


What is the normal range of a 3,5mm output? Answered

Hey everyone! I want to make a switch between three or more 3,5mm input jacks. I've found an instructables instruction on how to do this, I only don't know which switch to pick. It has to be a rotary switch. Now my question: what are the minimum specs (volts, amperes, switch current etc) to keep good sound quality? Yours

Question by dijh   |  last reply


how much current needed for a bilc pump to operate, will it operate with say 2 amps 12v PSU? Answered

How much current needed for a bilc pump to operate, will it operate with say 2 amps 12v PSU? I have this pump, i can barely spin it by hand and it is not working by poering by a 1 amp psu, perhaps I demaged it while testing with 24v Ac . thanks

Question by celalboz   |  last reply


convert 12v to 14.5 v simple? Answered

Hello. i have an LCD monitor powered from AC, that i want to make to be powered by DC for use in my car. the monitor PSU , supplies the controller with +5v and +14.5v. and i want to power the monitor from a regulated 12v psu. my question is, how would i make a dc booster, from 12v to 14.5 v at 2 ampere? thanks in advance!!

Question by settra   |  last reply


building a portable lead-acid charger?

I have two lead acid batteries rated 6v 4.5 AH (is AH ampere? or ampere/hour) boast/equalize 7.2-7.5v float 6.75-6.9v max charge current 1.35A both my batteries are identical the question now is.. i want to build a charger for it and something to lower is current so some feature i want is  1) rechargeable by a simple plug in adapter (i have a 12v 4A ac-dc adapter) 2) output of usb voltage and current (optional adjustable current and voltage) 3)led indicates 4)optional: a switch to power usb devices directly from the adapter/bypass battery to extend battery life 5)around 5 usb out puts? i want to build this project cos i have the won batteries which are in good conditions but not being used in anyway.. i hope someone can help me with the technical specs..especially on the circuit diagram   have access to an electrical components shop but it does not sell chips so i need to salvage them

Question by michaelgohjs   |  last reply


Silver recovery from photographic fixer solution at home level.

I wa trying to recover silver from photographic fixer solution using home made electrolysis unit having 12v and 3 ampere DC source, small graphite, and stainless steel dinning plate, plastic container of 25 L size.  But, after 6 hours, i was unable to get  the expected more than 60gm silver. in fact i get nothing at all. Why it went wrong? what is wrong with the anode, cathode, power voltage and amperage, volume of fixer used, NaOH added---? With regards!!!

Question by dese 


Diac Triac Circuit?

Hello all respectful members, I hope you are well and busy with learning hobbies. I want to have a Diac Triac circuit that can run on 220 Volts, 10 / 15 Amperes, 50 Hz. main line. This circuit can be connected to AC socket to cut off appliances at line fluctuations, and can be reset by a tiny push button when line voltage become steady. I request to provide me this circuit with components values part # Any one wants to send circuit direct to my email address will also be accepted I hope to get a positive response from participants here. Thanks for consuming your time.

Question by CREATIVE 10 


Determining the amperage output of transformers?

I have two giant audio transformers that put out about 70 volts each. I want to determine what the maximum amount of current they can supply is, because they're really nice transformers, and I wouldn't want to break them by over-heating them. Is there any way to do this mathmatically? I have a multimeter that can measure ohms and voltage, but it can't measure watts, and the fuses for the ammeter are blown, and I can't replace them right now. Bear in mind that this is about as much as I know about the transformers, other than they're heavy, and that primaries are 120 volts each.

Question by tylervitale 


UPS system

Hello every one recently i found a 12v 9000mah battery in my stuff and decided to make sth with it and found out that a UPS system can be good. I want to make a system that can give me power for a short time while I am outdoors so the low amper wont be a problem but I want to make the system with lower cost and better quality so I found out that I had to choose an inverter(12 to 220) which I think a 100w one would work. But my problem is choosing the inverter these are my choices based on my research:An inverter starter kit---------the cheapestAn inverter module(ones without box and fan which are small too)Inverters that are used in cars(ones with a box and fan)----------the most expensive

Question by Electronic guy   |  last reply


Portable,rechargeable mobile charger? Answered

I've come up with a plan to make a potable mobile charger for my galaxy phone with a rechargeable 9 volts battery.My original mobile charger(220 VAC input) says it gives an output of 5VDC at 0.7 amperes and hence I decided to make it with the given ratings.So here's my plan-I'll use a 7805 to regulate the 9VDC from the battery to 5VDC.The 7805 gives a maximum of 1 A output.So here's my question should I use a current regulator(LM317) to limit the current from exceeding 0.7 amps or will the phone's battery draw the sufficient amps from the LM7805?Maybe it might be a good idea to assist the output with a resistor as a safety measure.So,what do you say?

Question by Adarsh_tronix   |  last reply


Is there a way to lower a photocell's resistance to amps? Answered

I am making a device which uses a laser to lower a photocell's resistance to the point where enough current can flow to begin spinning a motor. Unfortunately, the motor (4.5 V) starts off by drawing about .75 amps and once running falls to .25 amps, but apparently the photocell can only draw a lot less- the only word I've been able to find is that it typically draws about 1 milliamp, which is nowhere near enough. I have two questions- first off, does anyone know how many milliamps I can run through a photocell, and is there any way that is pretty cheap so that I can lower the amps drawn or the resistance of the photocell without stopping the motors?

Question by seraine   |  last reply


How to power speakers with batteries without an inverter?

I have a powered speaker system that runs on 120 AC. I have the battery and the inverter but I know the speaker functions on DC and it has an built-in AC-DC inverter. So to use my battery, converting it to AC with an inverter and then the speaker converting it back to DC and all this process will result in a lot of loss of energy and cost me in terms of runtime.  I would like to know if there is a way of by-passing the built in inverter and connecting the battery directly to the speaker without causing harm? What I thought was using a multimeter, measuring the voltage and the amper output of the built-in adapter and buying a battery with the same numbers and connecting it directly there. What are the risks in there? because I don´t want to burn my speaker.

Question by queremosvino   |  last reply


Electricity for the challenged

I have a US plug AC/DC power adapter and need to get a European version. The specks on the adapter are input: 120VAC 60Hz 24 W and the output: 10 VDC 1400mA. I really don't have a clue as to what all these numbers mean but understand at a bare minimum I need something with a 10 VDC output. I've looked around at some shops and can find adapters that say 9v 1000mA and others that are 12v 1500mA. Do I need to get the exact voltage (I presume the v stands for volts)? What about the amperes ( I believe that mA is some increment of amperage)? Can I fudge the numbers a bit to save money and time instead of trying to get the exact configuration of the original adapter? Thanks for any help in clarifying this for me.

Topic by Crackpot   |  last reply


What to be aware of when considering power supply for a 100 watt amplifier?

I have a TDA7294 IC and want to know what kind of power supply should I build for it so that it can work safely. I heard that even though it works on 12V DC there are other things to take into consideration when choosing the tansformer and designing the AC to DC converter, like amperes and watts. My current set up is the following: a transformer (input: 220V AC; output: AC2*12V) a rectifier and a 35V, 2200 uF capacitor. I know this is very cheap and low quality but can you explain why in principle wouldn't an amplifier like the above work properly with such power supply? How do I calculate the ideal values of these factors for a 100 watt amplifier?

Question by themotionguy   |  last reply


Darlington pair not working? Answered

HI,I've uploaded a schematic of a circuit I just built and hope everything is clear in it.I need the darlington pair(made using a couple of BC547) to allow flow of current through it to power the relay only when the SPST switch between the base of the first transistor and +6VDC line is closed.But here's the problem-Even before I close the SPST switch the relay's coil get power,as soon as power is served to the circuit.The situation can be compared to directly connecting a relay to a 6vdc source because all the other components in my circuit fail to perform their functions.FYI the LM 7806 regulator gives out a max.current of 1 ampere and I suspect the issue is related with the Darlington pair receiving too much current.I tried adding a couple of resistors to block the excess current,making little difference.I request for your assistance to correct the flaw.Thanks in advance for spending your precious time.

Question by Adarsh_tronix   |  last reply


Supercapacitor for power supply design?

Hi I am new to electronics but I have studied the basics and the logic. I have 6 3000 farad supercapacitor from Maxwell(not the boost cap one) with a power rating of 3 watt- hour, so each capacitor holds about 10.8 kilo watts(3 watt x 3600 seconds= 10,800 watts). So I have been wanting to make a power supply out of these and two types have ran across my mind: 1. Turning them to a voltage multiplier type of circuit( so like a voltage multiplier but the capacitor is these capacitors). So I would have an output of 500 amperes(6 3000 farad capacitors in series would have a capacitance of 3000f/6=500f) and output voltage of 16.2 volts. For charging this power supply I will use a step down transformer connected to the mains with some circuit breaker, fuse, switch and ballast/ resistor at its input, the transformer will step it down to approximately 2 volts ac which then I will rectify with a bridge rectifier. 2. Putting them in parallel so I would have a total capacitance of 18,000 farad at 2.7 volts, and putting them in parallel with my power supply. So this works by charging the bank and the bank will discharge when fully charged. The power supply will be the same like the first design power supply. However this circuit seems very risky and I might need some feedbacks. For your information I live in Indonesia and the wall outlet have 220 volts with amperage of ~20 amperes So I have some questions which are: Q1. Which power supply design is more ideal in terms of safety and efficiency? And how can I improve? Q2. For power supply design 2, I believe I might need some "system" for timing the charge and discharge of the bank,what circuit or system should I use/ make? How about using relay? Or spark gap? Q3. What should I do to avoid explosion of capacitor in both power supply Q4. What components are recommended for the charging power supply and what diodes are recommended for the design one capacitor bank? I already have the thick wires necessary for this since i know both systems deliver huge amount of power. And please inform me if there is any mistake or anything wrong. Any input is very greatly appreciated, you don't meed to answer all question since i know is a lot and i don't want to waste anyone's precious time. Thank you so much for your time.

Question by dikap123   |  last reply


Please help me restore this old Lead acid battery

Hello everyone, I just salvaged a small, 50AH FLA battery from a Tractor. The Battery has seen 2~3 calendar years. It was showing 11.38 Volts sitting on the shelf since 3 months so I thought it was good and I brought it for a bargain. I brought it home and connected it to my Intelligent charger which claims to support (Automatic)- Deep discharge Charging Boost Charging Absorbtion Charge Tricke Charge Equization Charge Automatic Charge Current and voltage regulation with Temperature compensated charging. The charger is currently showing "Boost charge" at about 12 Amperes. Problem is,the Charging voltage seems to Jump from 13.1v all the way to 14.2V (like under 10 sec) I hooked my DMM to the battery terminals which comfirmed the same. Sometimes the voltage also reaches 14.4v and the Charger goes into "Equalization Charge" but falls back to Boost charge at 13.5v or something odd. After 3 days for 'Cycling" I tried a eq charge twice. it seems to be improving. the Battery voltage on charge is still jumping across 13.6v to 14.2v. if I draw a load it goes back to 12.3v. admirably, I connected the Battery to our DC load yesterday night and it ran Led street lights (load 4a ) for 5 hours before I switched it off. 20AH is decent progress for 50ah old Battery right? do you think it's sulpahation that's causing voltage jump? I ran the Battery down to 11.5v yesterday. in the morning with sun up, the Battery is slowly progressing from 12.8v and above... very stably. the charger shows'absorbtion charge' at 8-9 amps. 8 amps are good for 50ah Battery right? else how do we test the ah of Battery?

Topic by bhvm   |  last reply