How can you live in a world full of lies?

How can we?????

Asked by 9 years ago


So apparently...

After taking a devastating kick to the throat CO my little nephew (yeah, he's gonna be quite the Steven Seagal), my voice pitch has increased about an octave and my NY accent is totally gone (not that I'm going to miss it). My sister says it's temporary, but I can only hope. This happened Thursday of last week, and there's barely any improvement. If anyone else has taken a blow like this, please tell me about your experiences and the result. Thanks, DrWeird

Posted by DrWeird117 7 years ago



Simplest Li-ion charger?

What is the simplest circuit that will charge a single Li-ion cell? It doesn't need to be fast - can I just trickle-charge the whole way? Does it need to be a constant current supply? vik

Posted by askvictor 9 years ago


How to store/ conserve unused Li-ion/ Li-po batteries?

Have several unused Li-ion and Li-po cells: My laptop battery, only used when working outdoors (is in summer). Half broken MP3 players, phones, a broken RC helicopter and some larger batteries.  Some might be useful one day in a future project. As I understand these cells slowly deteriorate even when not in use.  What is the best way to keep them in shape? Perhaps dry storage in a freezer? Charge them occasionally or have them uncharged?  Are button cells Li-ion cells?

Asked by BobS 7 years ago


Li-ion vs Li-poly battery? Answered

I m currently searching for a battery that has an high discharge rate and I found these two:   Li-ion: http://www.ebay.com/itm/New-DC-12V-Portable-9800mAh-Li-ion-Super-Rechargeable-Battery-Pack-2-/180832863362?pt=UK_Sound_Vision_Battery_Chargers&hash=item2a1a7a8482 Li poly: http://www.ebay.com/itm/5200MAH-6S-50c-MAX-100C-22-2V-Helicopter-Airplane-LIPO-PACK-BATTERY-BEAST-Nano-/360510967745?pt=US_Character_Radio_Control_Toys&hash=item53f020cfc1 I need 40 volts so If I buy the Li-ion y will buy 4, and 2 of the Li-poly. I want to know which battery will be better for an high discharge for about 3 seconds, and about 15 times. I will use the batteries to create an high powered electromagnet to move steel. Thanks

Asked by Kurt Gerhard 5 years ago


Solar Powered Li-Ion battery?

I have this Carrera RC car, and it runs on a Li-Ion battery. Li-Ion battery: 7,4 V – 900 mAh It is the Red Freezer Watergun Car, and the battery is on the bottom of the car. I wondered if anyone knows how i could cut the recharger wire (8,4 V – 500 mA) and attach it to a solar panel on the top of the car to constantly charge the battery. 

Asked by articz82 5 years ago


Li-ion battery

Whats the best way to reclaim some of my lost battery life from my laptop? Or is it imposable?

Posted by steven07 10 years ago


Motorola Bluetooth charger to charge 3.7v li-ion batteries Answered

I have a little bluetooth charger that outputs 5.0V and 550mA, am I able to charge 3.7v li-ion batteries with this?

Asked by vallka 5 years ago


Charging Li-Ion 3.7 V

Just bought a 3.7v  batt for my new laser (class 3b,  200mw)  The batt place had no charger for it. Hoping it will arrive in time for show next weekend. If charger doesn't arrive, any suggestions for charging Li-Ion without overcharging/blowing up batteries?

Posted by Toga_Dan 3 years ago


Li-ion battery charging help please?

Hi, I have a couple of Li-ion batteries hanging around (one from an old mobile phone and one from an ipod mini), so I was planning to make an LED torch or something out of them. Anyway, can I use an old li-ion battery charger from a camera to charge them without it blowing a hole in my desk? Or whats the best way to charge them? Thanks!

Asked by Ben Charles 9 years ago


Charging Recycled Li-ion Batteries

I have busted mp3 players that I've already thrown away but decided to keep the Li-ion batteries in them for future use. Now i tried to connect them to LED's to turn into flashlights and they worked perfectly. Now the main concern is if i will use them as batteries for my flashlight how will i be able to charge them? Can I replace the jacks of the mp3 players' original charger with bulldog clips and just connect them to the terminals of the Li-ion batteries to charge them or do i need to connect a simple circuit for the Li-ion batteries?

Posted by rainrose 6 years ago


Can I use a cell phone to charge any 3.7v li-ion battery?

I want to use a cell phone to charge 3.7v li-ion batterry that are shaped like a AA (same as laptop batteries)

Asked by Sincere 8 years ago


Highest capacity Li ion 32650 and 26650

We now have the highest capacity Li ion 32650 3.6V 5500mAh, and 26650-4500mAh, 500~1000mAh higher than most in market. if anybody is interested, please contact us by ruy@gebattery.com.cn

Posted by Ruy Liu 8 years ago


HELP please!! with Li Ion battery

1 st question: i have a 7.4v 2200mA li ion battery. my ip camera takes 5v 2amps what color resistor should i use and how many ohms? 2nd quesiton: i have a class 2 battery charger 12 volts 300mA is it good to charge my 7.4v li ion battery?

Asked by dwstar79 6 years ago


Li-ion battery stores a weeks power for a home, from Panasonc

Www.popsci.com/science/article/2009-12/panasonic-will-market-li-ion-storage-battery-home-use-2011 As its a breach of copyright to post more than the link to the site, I am just saying that this device is what everybody needs if they want to be independent of electricity suppliers.

Posted by Lateral Thinker 8 years ago



li-ion nokia battery charging with original charger, but WITHOUT THE PHONE?

Can anyone help to give some very basic answer i guess..Is it possible to charge the nokia phone battery, outside of the phone with the original wall charger connected to its + and - pins? I need this for my small LED project which i need to use li-ion battery LED flashlight. Thanks A lot.

Asked by cdroman 5 years ago


Li-ion

Does anyone know how i can make the lithium-ion for my laptop last longer, if you have any ideas of suggestions or ideas please tell me!

Posted by rickick 10 years ago


Li-ion battery charger

I have taken apart a cheap disposable phone. i got a better phone because this one died. the charger still works though. i have 3 nokia 3.7v battery's. all the same. could i use this to charge the battery's in parallel.

Posted by chrischavez 9 years ago


ReHab for Li-Ion Batteries??

Is it possible to get more life out of Lithium Ion batteries that no longer hold a charge? These things are great when new, but for the cost, they seem to crap out in a yr or 2. Specifically, 18v Ryobi cordless tool batts.

Posted by Toga_Dan 3 years ago



How to charge a salvaged Li-ion battery pack?

I've recently salvaged a 11.1 V Li-ion battery pack from an old laptop battery.  Details : Voltage           :  11.1 V  (  ~ 4400 mAh ) Cell                 :  6 x Samsung 18650 22f  cells  (  3.7 V  and 2200 mAh ) Arrangement  :  3 packs in series , each pack having two cells in parallel  The charging circuit is intact.  How should I safely charge them? I'm well aware of the hazards related with improper charging of Li-ion batteries.  Can anybody please suggest some ways to charge it ? any tips ?   I need to know the proper procedure to safely charge (and discharge ) a Li-ion battery and what does a "protection circuit" do ? Thanks !

Asked by electro18 3 years ago


Emergency charging car battery with 4 li-ion cells, possible?

Hello, I'm trying to make a DIY emergency charger for my car battery. Is it possible to use 4 li-ion cells in series? That will be 4x4.2volts at full charge of the cells. I think i should limit the voltage and also the current with some sort of circuitry. Considering that I will use this when the car battery is almost fully discharged, there will be a huge power draw. Any suggestions?

Posted by rcs-al 5 years ago


Li-ion drill charger?

Hi So I've got a cordless panasonic drill for which the battery charger has been lost. I've been googlin' for a DIY way to make my own li-ion charger for the battery pack, but since these batteries seems pretty sensitive about the way they're charged, and none of the "how to:s" have focused on drill-packs (this one is 14,4v, 3,3Ah) I thought I'd ask the good people here on instructables for a pointer or two. :)

Asked by Kejnao 5 years ago



How to Charge & Use 2 12V DC 15000mAh Li-ion Battery Together...???

Hello Guyz...  I'm New Here, I have a question..!!  How to Charge & Use 2 12V DC 15000mAh Li-ion Battery Together, That's Mean I want Use 2 12V DC 15000mAh Li-ion Battery Because For more Capacity 15000mAh X 2= 30000mAh But I want Charge This Two Battery at one time at one charger 12V DC charger...  And My output volt required 12V DC..  So How its possible.....?? Please............. Please.......... Please........  Help Meeeeeeeeeeeeeeee...........!!!!

Posted by Shilon 4 years ago


How do I charge Li-ion Batteries?

I have lots of old Li-ion batteries and I want to use the for a project. I want to put them all in parallel in a big pack and I need a charger that can charge them in a reasonable time. Can I just put 3.7v straight into them, with a current limiter of course, or do I need some special circuity with transistors etc. 

Asked by makincoolstuff 5 years ago


How to Charge 7.4v Li-Ion Battery Pack with CCCV

For one of my project i need to use 7.4V Li-ion battery of 2200mAh, Now i need to charge this battery pack efficiently. I'm searching for a charging circuit for the same but what ever i'm getting is a 3.7v charger or a charger not following CCCV methord. as mentioned in following link Link: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries Please suggest me a way to charge and discharge my battery in a better way.

Posted by ASHMILH 7 months ago


How can I recharge 3.7v Li-ion batteries from cellphones... if I have 3 of them attached in a serial array?

I'm trying to turn a cheap pc-speaker set into a battery operated set. I have a lot of 3.7 Li-ion batteries from dead cellphones and I want to solder them into a serial arrange to get 11.1v. The question is... how to recharge them? is it safe to recharge with a 12v dc adapter? any other idea? Thank you!

Asked by =PK= 8 years ago


Manage a single 3.7V Li-ion cell for 5V load? Answered

This is a 3.7 V 10Ah Li-ion cell. Load requires 5V 1A. Can you give me a general idea to have something like this - 1. Power the load from 1 single cell 2. When connected to external power source, like USB, disengage the battery and power the load from USB delivering 5V 1A, and simultaneously charge the cell but at 5A. Thanks.

Asked by arjunmenon 3 years ago



how to make 12v battery from 18650 li ion batteries?

Hi, I have this led strip  http://www.supernight.cc/supernight-tm-5m-16-4ft-smd5050-rgb-double-row-600-leds-tube-waterproof-led-flexible-strip-light-12v-120led-m-strip.html Working Voltage is 12VDC. Working Current/meter: 0.8-1A the strip is 5 meter. 18650 x4 = 14.4 v 18650 x3 =10.8 v How can I make it work with 18650 li ion batteries? And how many battery must I use and how can I do that? I think that I need driver or booster to get a stabil 12v! work-time I need 5 h

Asked by Cr77777 1 year ago


Lithium Ion protection circuitry?

I was wondering.... The protection circuit for li ion cells in phones; is it a sort of regulator for the battery when charging? Or does it just stop the cell from being drained too far? I was wondering if I could use the circuitry from the prismatic li ions found in mobile phones for a 18650 battery....will the difference in capacity be a problem?

Asked by .Unknown. 7 years ago


Advice building a li po USB battery pack?

Hello, I have 8 of these batteries - they are li po 3.7v 1100mah. each one is good and shows 4.16v to 4.17v on a multi meter. my question is how can I connect these together to make a battery pack I can use to charge my phone at festivals? links to ebay items would be a great. would connecting them all in parallel to a USB charge circuit work? advice would be a huge help. Thanks! Battery image = http://i67.tinypic.com/iz0rk0.jpg

Asked by robstarboy 2 years ago


Whats the proper way to wire a Li-ion rechargeable battery?

I have a Li-ion battery that I want to use to power mini portable speakers. I want to enclose the battery into the portable speaker's box and have a port drilled into it to recharge the battery. So what is the proper way of doing this? The Positive + and negative - of the battery is connected to the speakers right now, so would I just cut into the positive and negative and add my charging port? (I have the correct charger for the battery by the way) Hopefully I explained this well enough for someone to help, thank you!!

Asked by Zebrah 4 years ago


Power 5V 1A load using single 3.7V 10Ah li-ion cell, and charge it differently

This is a 3.7 V 10Ah Li-ion cell. Load requires 5V 1A. Can you give me a general idea to have something like this - 1. Power the load from 1 single cell 2. When connected to external power source, like USB, disengage the battery and power the load from USB delivering 5V 1A, and simultaneously charge the cell but at 5A. Thanks.

Posted by arjunmenon 3 years ago


Help me designing charger for Li-ion 9.volt battery?

Hello all.... need help !! circuit diagram for making charger for my li-ion 9volt- 600ma battery ...  I want to charge at 60ma ... how to limit current here (constant current) (I have 12v  & 18v 1.5amp power adapter) in general how to limit current in Circuit? (which components to use ??) Thank you :)

Posted by 60ma 2 years ago


Li-Ion battery pack

Hi, I have 4x PANASONIC CGR18650CG LI-ION BATTERY 2250mAh 3.7v.  I have connected them in series and it gives around 14v. My internet router is working on 12v 500mA. Is this battery pack too much for that router? I was thinking to use that battery pack as backup for my router when there is no electric power, because it's winter and every few days there are problems with power. Thanks!

Posted by AdvanŽ 4 months ago


Help me designing charger for Li-ion 9.volt battery?

Hello all.... need help !! circuit diagram for making charger for my li-ion 9volt- 600ma battery ...  I want to charge at 60ma ... how to limit current here (constant current) (I have 12v  & 18v 1.5amp power adapter) in general how to limit current in Circuit? (which components to use ??) Thank you :)

Asked by 60ma 2 years ago


Do I "Have to" use an expensive li-ion charger for li-ion battery packs?

Overview I am building a 7.4v Li-ion battery pack (7200 mAh) with a PCM of course and i usually use my li-ion / liPo charger but i was curoious if their was another way.  Details this battery pack will be installed in a portable gaming device and i want it to have its own wall charger. But i dont want it to take 6 hours. Ideas I want it to be reliable and I want it to charge fast. Most li-ion wall charger units for 7.4v only charge at 1.2A max, and charge at up to 8.4V. (And are like $25+) PCM can handle much higher, up to 8A rate Batteries are Rated up to 3.5A rate Ultimate question If I purchased 3 regular everday wall chargers, rated at 7.5V @1A (for $5 ea) and ran them in parrallel in a nice  enclosure running one charging plug, (hypothetically it "should" rate; input: 120V, output: 7.5V @3A).  Could i use this to charge the for-mentioned Li-ion 7.4V 6400mAh battery pack in just over or around 2 hours???? Or is this not feesable for some other reaon???

Asked by supramp 6 years ago










Power Supply from Phone Chargers?

Well I have a bunch of Li-Ion phone battery chargers lying around. Can I adapt one of these into a power supply? Or will the internal circuits to prevent overcharging a battery prevent this? Thanks! 

Asked by transistorguy 6 years ago