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Hi Angel m Chewning, we want to help you with your question, but we need more information from you. Can you please add details in the comment box? look at laptop charger and note its voltage output. To charge a 20 volt lithium battery it usually needs a higher voltage than 20 volts. the laptop charger is most likely to be 19 volts or less. What voltage is the laptop charger ?Hi Angel m Chewning, we want to help you with your question, but we need more information from you. Can you please add details in the comment box? look at laptop charger and note its voltage output. To charge a 20 volt lithium battery it usually needs a higher voltage than 20 volts. the laptop charger is most likely to be 19 volts or less.
What voltage is the laptop charger ?
Absolutely not. lithium batteries can be very dangerous if you don't charge them correctly. These are the batteries that you see catching fire in phones. Find the proper charger or forget the battery - for you own safety.Absolutely not. lithium batteries can be very dangerous if you don't charge them correctly. These are the batteries that you see catching fire in phones. Find the proper charger or forget the battery - for you own safety.
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Re: How can I charge a 20 volt lithium battery without...
Angel why not purchase a 20 volt lithium battery charger . It is better than risking blowing up a laptop charger or the battery.
Google search
charging 20v lithium batteries
and heaps of chargers come up that you could purchase.
what is the charger for what device and what is the battery for what device ?what is the charger for what device and what is the battery for what device ?
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No way! Lithium Ion batteries require special chargers to prevent fire. They are very unstable and if they break down internally, they self combust. You can't even use a Nickel Metal Hydride battery charger with them. And it is a 19.2 volt battery, which won't charge with a 12 volt charger. Use the Craftsman charger specially made for those batteries.
* Like a 12VDC auto (car battery) charger? No. It does not have enough voltage to overcome the initial surge (about 20-22 volts)
* If this is a Lithium Ion pack the it should be putting out a minimum of 16 Volts DC to a maximum of 21 Volt DC.
* The battery (or charger) also needs to monitor the temperature of the batteries, Charge voltage, and Charge rate. This is to prevent over charging and over heating.
* Just slapping a charger on any multiple cell battery pack will destroy it if it's overcharged (over heated).
* If you do have a charger but the charger won't recognize the battery then it may be possible to give it a "boost" with another full charged battery (has to be the same type). This is where you connect the batteries in parallel (Positive to positive, negative to negative.) Let it charge for a short time 15-20 seconds should do it. Try the charger again.
* 18V Battery restoral (with variable power supply); https://www.youtube.com/watch?v=4Gj4yFX58UU
* Using existing charger to fix battery (does not always work); https://www.youtube.com/watch?v=6GfPKg05ZIU
* If your using NiCad batteries then you will have to "Zap" the battery (This is a bit hazardous); https://www.youtube.com/watch?v=5B9rx7hoizk
* I think the earlier video guy had the right idea. Just turn in the bad ones and get new on (or at least Lithium Ion batteries)
Aloha, ukeboy57
If both lights on the charger are flashing it is indicating you have a bad battery and the charger will not charge the battery. The charger has circuitry that tests the battery and if it 'thinks' the battery is defective it will not attempt to charge it. The only way to verify whether it's the battery or charger is to try charging your battery on another charger or try charging another battery on your charger. Most of the time it's a bad battery.
This can happen if the battery is too dead for too long. Keep trying to make it work like you have maybe 20-30 times. Or you can leave the battery in for a few days and let the logic chip do it's job. It should start working in a day or two.
Lithium Ion batteries don't charge the same way ni-cads or ni-mh do. You need a lithium ion specific charger to charge them. (Some chargers do multiple types.)
Measure the output voltage of the charger without the battery--it must read several volts more than 19.9 volts. If ok, then the battery itself probably needs replacement. Tool batteries seem to die fairly soon if they are made up of nickle-cadmium cells. Contact: www.primecell.com for their rebuilding service with lithium cells which hold charge much better and deliver greater endurance from each charge. In many cases, the original charger will work with a lithium battery. Hope this helps!
I found this while searching to find an answer to solve my problem. It worked! Some say that it took them about 20 times... it took me about 7. Be patient and just keep trying! Hope this helps!
My NP 20 gave me the flashing red light of death and I got Casio to replace it. Then I had the same problem with my second NP 20 so I dug around for a way to fix it and I found the following advice on a site called FixYa. It worked instantly and I didn't risk ruining my battery. ylu1 writes: I had the same problem as this. what i did was... i kept putting the battery on the charger then took it off as soon as the red light came on. i did this about 6 times. doing this puts a bit of charge in the battery each time before the charger starts to flash. after the battery as got enough charge in it it can start to charge. hope this helps.
Hi Angel m Chewning, we want to help you with your question, but we need more information from you. Can you please add details in the comment box? look at laptop charger and note its voltage output. To charge a 20 volt lithium battery it usually needs a higher voltage than 20 volts. the laptop charger is most likely to be 19 volts or less.
What voltage is the laptop charger ?
Absolutely not. lithium batteries can be very dangerous if you don't charge them correctly. These are the batteries that you see catching fire in phones. Find the proper charger or forget the battery - for you own safety.
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