How to recharge these batteries?

I took apart 2 cordless drill batteries and there were 13 cells in each one, which were Ni-Cd 1.2 volts each. Also there were the numbers C DE35ND on them if that helps at all. I cut 3 off in order to form a 12v battery (it was originally 15.6v) but I dont know how I can safely charge it. I no longer have the charger that went with the drill, but I was wondering if I can just use a wall adaptor to charge them or do I need a better charger? All comments and answers are greatly appreciated!!!

Question by Electronics Man 7 years ago  |  last reply 7 years ago


weak rechargable battery

I have two drills with weak batterys ,craftsman 14.4 and dewalt 14.4. are there any sudjestions to get them to work better?

Topic by michaelsr. 8 years ago  |  last reply 8 years ago


Rechargeable Battery Help?

I'm sick of throwing away AA batteries, and I go through a lot with my camera flash. The only rechargeable, multi purpose batteries I've used were some generic energizer ones I got some years ago, so I need your recommendations.I'm willing to spend a bit more for a quality charger/batteries that will last. For batteries, I'd like to support Eneloop, as they sponsored an instructables contest in the past. They are significantly better than Energizer/Duracell, right? How does Rayovac compare in price/power?For a charger, I was looking at the the BC-9009 by La Crosse. It has good reviews, charges slowly for a slower drain, prevents overcharging and has all sorts of other features. It comes with 4 AA, 4 AAA batteries and a case for $40. See it here:http://www.amazon.com/Crosse-Technology-BC-9009-AlphaPower-Battery/dp/B00077AA5Q/ref=sr_1_1?ie=UTF8&s;=electronics&qid;=1251579646&sr;=8-1I don't know how good the la crosse batteries that it comes with are, though. The BC-700 would work fine and can be bought alone for $30.For packaging reference, I need to have at least 8 AA batteries, but would definitely use any extra AA or AAA that might come with it.So, what do you have to suggest? Thanks!Update: I read that energizers may be better than eneloops for things that use a lot of power quickly (like a camera flash) while the eneloops are better for things that use it slowly (like a remote control). Is that true? I'm concerned about getting batteries that will store a lot of electricity over many charge cycles, but not so much about them holding a charge during storage.

Topic by Weissensteinburg 9 years ago  |  last reply 9 years ago


Recharging a car battery

Hello, My burning question is if I can recharge a car battery with a 12 v 5 Amps DC energy source. The car battery is a 12v 70 A standard battery, i think it uses Lead. I am asking because i do not have any experience in recharging car batteries and i know that mobile phone batteries can explode if you do somenthing wrong, so i want to get it right the first time with a car battery. Thanks.

Topic by cdanutz 7 years ago  |  last reply 7 years ago


Recharge rechargeable battery with a led battery powered lamp?

I am making a lamp cordless using batteries and low poer 12v led strip. My question is can i somehow connect a solar cell so as the light hits it recharges the rechargables batteries that will actually power the lamp. So I dont have to take batteries out and recharge them every few days or week? 

Question by jjb82177 6 years ago  |  last reply 6 years ago


Can you recharge rechargeable batteries with a normal battery clip?? Answered

Can you recharge rechargeable batteries with a normal battery clip like you buy at radio shack? (batteries will be charged via solar charging circuit)

Question by monkhm 7 years ago  |  last reply 7 years ago


Batteries

I have a small solar set-up and was about to wire in a second battery and increase my available amperage. I just read an article about only connecting batteries of equal power, voltage (which I understand) and AH (which I was surprised). I hadn't realized that AH may also play a part in this. Can someone tell me if this is true? I have 2 older marine batteries and I change over the wires from the charge controller to recharge them separately. My thought was to wire them in parallel, let them charge together and increase my amperage at the same time. First one is 12 vdc / 80AH 2nd one is 12vdc / 60 AH I also have a 12 vdc / 160 AH that will be coming out of the boat soon and was hoping to hook that in as well (once I pick-up another panel).

Topic by olddawg 10 years ago  |  last reply 10 years ago


Rechargeable MintyBoost

I think the mintyboost is awesome, but at walmart i saw a MusicPower Encore for like $30 bucks and thought it could be much cheaper made from scratch. Basically it is just a lithium battery pack that recharges when pluged into ac and has two usb ports that can power devices from the mains when plugged in or from the battery when not. I think this would make a fantastic instructable; maybe use a cell phone battery(or two) or rechargeable AAs. I can just picture an altoids can hanging from an outlet with a flashing led or something. Also two usb ports would be a great addition to any mintyboost project.

Topic by elbel86 10 years ago  |  last reply 10 years ago


how to make a rechargable battery at home?

Question by relampagueante 9 years ago  |  last reply 6 years ago


BATTERY help? Answered

i have a rechargeable battery that is 7.2 volts and 3000 mAh Ni-Mh now is it safe to add a Voltage Regulator to run an led or if not how do i? what also is scaring me is the 3000 mAh if its good or bad

Question by MACKattacksnipe 7 years ago  |  last reply 7 years ago


Are the AA energizer rechargable batteries NiCd or NiMH? Answered

Question by redlizard5 7 years ago  |  last reply 7 years ago


Rechargeable Battery Pack Install

I have a project that I have been working on, and it currently runs on two different battery packs for different components. I want to put rechargeable batteries in these packs, and I want to install a wall charger to charge the batteries.  I am having trouble finding a good tutorial on the circuitry of this.  Will I need two different chargers for the two components, or can I charge both from the same power supply?  Can anyone help me out? I can post some photos of the project and its current circuitry if needed, its a laser spirograph. 

Topic by ugman77 8 years ago  |  last reply 8 years ago


Let's just say i want to recharge a rechargeable battery with another AA battery... Answered

(I know it wouldn't work very well but lets just say that it does) does the positive part of the regular battery go to the positive part of the rechargeable battery? I am trying to recharge a battery and i don't want to ruin the rechargeable battery so i just wanted to make sure that i was going in the right direction...

Question by ML159 10 years ago  |  last reply 10 years ago


Rechargeable Lithium Ion Batteries

Hello Everyone! I am planning to make a rear bike light, which has rechargeable batteries through USB. I then decided to use Lithium Ion Batteries for it. But the problem is that I dont know what parts I need. It should be able to light up 4 COB LEDs (Each rated 12V, photo given) Till now, after looking at several other instructables, I am able to say that: 1. It needs a steup transformer from 5V TO 12 V - TP4056 (https://www.amazon.in/TP4056-lithium-Battery-Charging-Charger/dp/B00JQ2VG1A/ref=sr_1_8?ie=UTF8&qid;=1505148914&sr;=8-8&keywords;=lithiumion+batteries)  or https://www.adafruit.com/product/259 2. It needs some sort of protection like:  http://www.batteryspace.com/PCB-for-11.1V-Li-Ion-Battery-Pack-4.0A-limit-----PCM-L03S04-559.aspx 3. Also do can I allign three 3.7V Lithium Ion Batteries to make 11.1V? Please help me out Thanks!

Topic by nabeel.quadri 1 year ago  |  last reply 1 year ago


Can a "dead" rechargeable battery be resucitated?

I have a Filter Stream Ultra Dust Tamer 4500 that doesn't recharge.  Is there a solution; a replacement part; any help at all?  I really don't understand rechargeable batteries.  I think they may get fried if the transformer is left plugged in too long??  How long is too long?  I know this question applies to all rechargeable batteries with transformers, e.g., cell phones, portable vacuum cleaners, cameras and on and on.  Thank you.

Question by randithedog 8 years ago  |  last reply 7 years ago


Wall charger for rechargeable batteries HELP!

Hi, I'm trying to figure out how to recharge these BATTERIES without having them blow up in my face. I'm very new to making my own electronics and a little timid when it comes to messing with batteries. I believe i need to use this DC jack connector? With this CHARGER? I'm using the battery to power 21 LEDS wired in parallel with resistors (3.4v 20mA) if relevant. I think i need to wire it up like in the picture. I guess my question is if i wire all these things together and try to charge the battery will it destroy something? Also if i wired two of these batteries in parallel can I still charge it the same way? How do i know i'm using the right DC jack connector and charger? Is there a specific switch i need to use? Any help would be greatly appreciated!!! Thanks!

Topic by kasmir 5 years ago  |  last reply 5 years ago


Battery recommendation

Hello, I'm looking for a rechargeable battery for a project and I'm not having any luck finding a suitable one.  Here's what I need: The battery will need to be between 12 - 18v with between 1-2 amp.  This will be powering a set of speakers, so not really sure what type of amp hours I need.  The battery will need to fit into a tin lunch box.   An idea I had was to use a 12 or 18v battery for Power Tools - not sure if it will work though.  I also found this, http://www.altex.com/12V-Lithium-Ion-Rechargeable-Battery-Set-LBP-124500-P150057.aspx not sure if it is powerful enough though. Any thoughts/ideas is appreciated.  

Topic by RabidNoodle 7 years ago  |  last reply 7 years ago


What kinds of acid, if there is any such substance, changes in acidity with temperature?

I was thinking of creating a battery that could charge with heat. In small gadgets we keep in pockets, these batteries could charge off our body heat. It's just something I'm interested about.

Question by ANDY! 8 years ago  |  last reply 8 years ago


solar panel and rechargeable battery

If i must using 17.5volt solar panel to charging battery 12v 72ah, what should need to apply between both of the item?

Question by fboll 7 years ago  |  last reply 7 years ago


Recharging batteries while in a project

So I'm thinking of a few projects using rechargeable batteries and I wanted to try something. I want to have a power cord attached to the project that can plug in to a standard AC socket to recharge the batteries. I have no experience with rechargeable batteries beyond putting them into the box and sticking it in the wall. I want to be able to hook up 6 AA rechargeables and have no idea what DC voltage I should be using. I have an old charger for a two way radio that runs at 9V and was designed to charge the 4 AAA batteries inside. Would this work? It would be nice because it's small and even has an LED to indicate the charging status. Is this possible and is there anything other than DC voltage I need to worry about? Also, is it safe to hook that up as long as there's a switch to disconnect the batteries from the project? Any help is appreciated!

Topic by ncontorno 12 years ago  |  last reply 10 years ago


Rechargable NIMH Batteries Question

I have a laptop battery that was cracked, so i opened it up, and like any other, it had individual NIMH batteries strung together... how to i find out how much voltage the individual batteries can take? I want to make my own battery pack with several of these laptop batteries... battery pack is GP B905 NIMH 12 volt thanks

Topic by Hurdy Gurdy Man 11 years ago  |  last reply 8 years ago


Can a battery recharge itself? Answered

Hi there, i have a query. In a circuit powering just an LED can the battery power the LED an recharge itself? Or, having a battery power an electric motor connected to electric motor running it in reverse could that generate electricity to run the first electric motor? In my head i have this image in my head that the 2 motors wired together with a LED could power that LED and themselves from the battery connected for a short while then put back in its package? I'm not blessed with access to a reasonably priced electronics store (honestly, its cheaper for me to import the components from America paying postage to New Zealand than purchasing at the nearest store even through online or phone order) Anyway, so i haven't got the patience to wait 2weeks and spend many dollars to experiment myself i wondered if anyone had or knows if this sort of thing works? Thank you Also, could you explain and list what i would need to do this? Thanks again

Question by Scotty3000 8 years ago  |  last reply 8 years ago


Portable rechargeable battery pack with state-of-charge meter and can be charged while in use?

I've been looking about for something like this, and have yet to find something that will work for my needs. I plan to break ground on a portable Raspberry Pi system, and will need a battery system for it. I've seen a few others around (both RPi portables and battery packs) but I would love to be able to make a battery pack that I can charge while the battery pack is being used, along with add some form of meter to know how much charge I have left. Any and all help is greatly appreciated!

Question by DoctorWoo 6 years ago  |  last reply 6 years ago


how to make 6 volt .5ah battery power supply?

Is it possible to built by 1.2 volt 2500mah NIMH batterty. or any other way?

Question by atmhoque 10 years ago  |  last reply 10 years ago


Recharging an RC car with NonRechargeable Batteries

I got my little sister these little rc cars made by tomy. they have infrared to avoid obstacles and navigate themselves (pretty cool) but they burn through batteries very quick. it uses 2 x AA non rechargeable batteries so i want to make them rechargeable. Here is my problems with current ideas, and the pictures really help explain everything so please look there. 1 normal rechargeable batteries --- will have to remove battery door every time and it is too much hassle 2 use rechargeable battery pack for wii like below -- not as common and expensive 3 heres the one that might work incorporate a 3v rechargeable power source with a dc charger port and 2 indicator leds, all in an enclosed 2 x AA battery holder HOW??? please help --- i just want to make it work out but i really dont care if i have to change the batteries or anything like that also, i need to make 2 of these so cheap please!!! and maybe add another led for the car to have a glow like pic 4? thanks rak

Topic by raykholo 10 years ago  |  last reply 7 years ago


battery problem

I have a 12 volt 7ah rechargeable lead-calcium battery, but no charger. i want to build a charger, but the diagrams ive found are for lead acid. does anyone have a good circuit for lead calcium battery chargers?

Topic by tech-king 11 years ago  |  last reply 9 years ago


Any fun, weird or quirky uses for old, rechargeable, dead batteries.?

Any fun, weird or quirky uses for old, rechargeable, dead batteries.?

Question by ostrich160 8 years ago  |  last reply 8 years ago


Help with recharagables

First off I'm pretty expierenced with electronics, but I've not been using rechargables that much. I'm not sure how to build a charger for nimh batteries. I want to charge a 3.6v battery, 70 mah (3x 1.2 volts, 70 mah each, I know, it's a small battery for a small device) as cheaply as possiable. I also want it so that it can still power the circuit (takes about 20 maH to run the circuit) when charging. If possiable, I want to charge like 5 or 6 of these at once. Help please!

Topic by guyfrom7up 11 years ago  |  last reply 11 years ago


Any fun, weird or quirky uses for old, rechargeable, dead batteries.?

Any fun, weird or quirky uses for old, rechargeable, dead batteries.? Not recycle as its not fun, weird and/or quirky. And please do not answer saying how it is. Thanks.

Question by ostrich160 8 years ago  |  last reply 8 years ago


custom battery

I need a 12 volt rechargeable battery configured like a 9 V  but it can be longer,,,I need as many amps as possible........maybe connect two 9v and cut voltage...is it possible? I'm dumb about these things so be gentle.....I have 8/ 1.2Volt batteries configured in a plastic holder..but the voltage is not working out.......any way to boost the voltage on the 1.2 batteries with out a lot of bulk?

Topic by antant00 8 years ago  |  last reply 8 years ago


Battery stumper?

Somebody wanna tell me why when I got my brand new quad syma copter and I put 4 brand new rayovac rechargable batteries that measured 1.24 volts the hand controller would not turn on, and when I put in 4 old duracells that measured 1.14 that were just laying around and weren't brand new like the rayo's were and they worked, I'm stumped. Too much power?

Question by angpal59 5 years ago  |  last reply 5 years ago


How should I recharge a 7.4V battery? Answered

I have a 7.4V rechargeable battery and I'm wondering what voltage I should be charging it with. would 9V work? Are there any general guidelines for recharging batteries? Specs: 7.4V 1400 mAh Lithium-ion Was originally used in a NXT LEGO robot. Thanks! Ryan

Question by jensenr30 7 years ago  |  last reply 4 years ago


Can you overcharge a rechargeable battery?

Is it possible to overcharge a rechargeable battery? If so, how, and how can you prevent it?

Question by phalanx447 10 years ago  |  last reply 10 years ago


can you recharge an energizer e2 lithium AAA batteirs? Answered

I need help

Question by animan1 9 years ago  |  last reply 2 years ago


Best rechargeable AA? Answered

I am looking for some really high capacity aa batterys. I found 4600mah batts on rcdimos.com.... I thought that these looked a bit sketchy. Does anyone know some high capacity aa rechargeables??

Question by astroboy907 9 years ago  |  last reply 8 years ago


What is the optimum charging voltage for 1.2 volt ni-cad rechargeable AA batteries? Answered

I am going to build a solar panel that charges these batteries so i I need to know the best voltage to charge them.

Question by airsofter1 9 years ago  |  last reply 9 years ago


What can I do with my dead AA batteries?

Besides throw them away.Edit: Or make them into art. You can make anything into art, so that's a given.I have both rechargables and non-rechargables. And I can't be the only one with a buttload of dead batteries idly lying around the home left over from the 90s.

Topic by bodybreak 11 years ago  |  last reply 11 years ago


Rechargable Wireless Mouse

I had this idea a while back and have yet to see one made. Unfortunately I don't have the means to try it myself. What I thought was a wireless mouse which would be recharged with its own dongle. When the dongle is plugged into the computer the batteries inside would be charged up then when it is put into the mouse for storage those batteries would charge up the mouse. I don't really know a whole lot about electronics - despite perusing instructables now and then ;) - so I don't know if this is even possible. But I don't see why it couldn't be done, or why it hasn't been done yet {unless I just haven't found it}. Peace to you and yours, Matthew "Dra'Gon" Stohler

Topic by BlueDragonFire 7 years ago  |  last reply 7 years ago


a few battery questions

I got 2 questions1st. i was shopping at target today and noticed that the big energizer rechargeable "D" size batteries has the same mAh rating as the smaller "AA" rechargeable energizers i have at home (2500 mAh) can any one explain this?2nd. i've seen some pics around the site of custom "D" sized "AA" battery holders that hold 4 "AA's" in a "D" sized space ( https://www.instructables.com/id/SA59T0CFB11L31B/ ), but i haven't seen any instructions on how to make them. can some one make an instructable about this? (preferably one that can be made to hook up the" AA's" in parallel)

Topic by clasic_traveller_diehard 10 years ago  |  last reply 10 years ago


Storing electricity in a homemade rechargeable battery

Storing electricity in homemade rechargeable battery ... I've read lots of things about cranking the shaft of a conventional motor to create electricity. Can the electricity be stored for later use in a homemade rechargeable battery? Also, does anyone have an idea on how to make such a rechargeable battery? Thanks.

Topic by pinoymale 10 years ago  |  last reply 10 years ago


is there an advantage to having a battery with a higher mAh?

I have a Pentax digital camera that came with a D-LI88 rechargeable Lithium-ion battery with a 3.7V, typ.740mAh (2.8Wh), and min.700mAh. I want to buy an extra battery for it. I can find batteries with the same 3.7V, but the mAh are different.

Question by joypain 8 years ago  |  last reply 8 years ago


How to charge rechargeable batteries for a project? Answered

I am going to build a solar powered USB/ Ipod Charger and I have a questions pertaining to it. A solar cell will charge 4 AA rechargeable batteries (NiMH) in a battery holder and these batteries will power a device through a Minty Boost. Now, I have little experience with creating electronics. So I was wondering if I can connect the solar cell directly to the battery holder (with a diode of course) or do I need to connect it to another component and then to the battery holder. Thanks.

Question by dom13marco 9 years ago  |  last reply 9 years ago


What are polyacene batteries? Answered

Hi, I've recently come across these batteries that say "Polyacene Battery". I looked at the rating, and it's stated in Farads. I went on Wikipedia but it didn't show up, however the search results had one entry, "supercapacitors". So are these supercapacitors or batteries? I do however know they are rechargeable. PS The link to where i found these is http://www.goldmine-elec-products.com/prodinfo.asp?number=G13133A.

Question by LiquidLightning 8 years ago  |  last reply 7 years ago


Solar - Powered Batteries

Check out these cool batteries! Their creator is Knut Karlsen.See what he said:At home i always have some batteries lying around, either rechargeable or normal ones. Usually they are empty, but i'd like them to be always fully charged. I could use a normal charger and there is a lot of solar devices that charge rechargeable batteries. I wanted it simpler; why hasn't anyone made a battery with integrated solar cells? The idea of the "SunCat" batteries where born. The batteries should just bask in the sun like a cat and left for a while, in a sunny window, they would slowly recharge.For more details visit this site.Thanks!Stanislav

Topic by comodore 10 years ago  |  last reply 8 years ago


I would like to have an industrial sewing machine motor operate on a removable and rechargable battery. Answered

I am in need of a rechargable battery operated industrial sewing machine motor. I would like to be able to switch from the battery to AC power when needed. Use battery when in the field and AC back at the shop. Typical sewing machine motor is: 2 poles, 130 cycles 50/60, 1.0 amps, 90 watts. It would be great if the battery would last 1.25-1.50 hours per charge and be removable to install a fresh battery and be charging the spent one. Thanks.

Question by bc23 9 years ago  |  last reply 8 years ago


How to use a rechargeable battery in a circuit?

I want to use a rechargeable battery in a circuit, but I'm having trouble understanding it. Let's say I want two switches... One to use an alkaline to charge a rechargeable battery, and another to power an LED using that charged battery... can some draw the absolute SIMPLEST way to do that using a AA battery and this battery:http://www.coolight.com/LIR2032-Rechargeable-Coin-Cell-Battery-3-6v-p/1xlir2032.htm(The LED works fine with 3.6V)Remember, I'm very dumb, don't assume I know ANYTHING!Thanks!

Topic by perkinsb1024 12 years ago  |  last reply 12 years ago


How to charge a rechargeable 9v battery?

Hi guys, I am using a lot 9v volt batteries so I thought why don't I buy rechargeable but I found out that the charges where expensive. so does anyone know a circuit to make a charger?

Question by bobbiy 5 years ago  |  last reply 2 months ago


Charging rechargable battery using USB?

New here and I have a question. I was building a NES MP3 player and everything is going fine until I got to the battery part. At the moment, it current uses normal nonrechargable AAA battery to power it but I was wondering if it's even possible to put in a rechargable battery in there and wire it up to the USB port so that plugging it into the USB will recharge the battery? If so, how do I do it? Thanks in advance

Topic by Incostel 12 years ago  |  last reply 12 years ago


How to integrate a rechargeable 12v battery?

I am building a portable boombox and trying to figure out how to integrate a 12v battery into it that can be recharged using a input jack and the AC adapter charger that came with the battery., without having to disconnect the load.   Is it as simple as connecting both the charger and the load to the battery?  Would I need to wire in a switch to disconnect the load when I plug in the charger?  I'm an electronics noob so any help would be appreciated.  Thanks.

Question by banjopoker 6 years ago  |  last reply 6 years ago


LED HOOP- rechargeable

 I am tyring to make my led hoop- what i am trying to do is hook up a rechargeable battery that I can hook the wire straight from the hoop to the wall. what do I do and how? I have been trying to figure this out and just can't figure it out! can anyone help me? 

Question by nickiepip 9 years ago  |  last reply 9 years ago