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Old 10-23-2012, 09:40 AM #1
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Default Panasonic 18650+ Cheap charger

Hi everyone,
I am planning to buy this battery for a laser: Panasonic NCR18650A NCR18650 18650 3100 3.6v Rechargeable Battery Made in Japan | eBay

I will however be using it with a (cheap) Chinese charger that came with a green laser from DX.
Using a cheap charger to charge the Panasonic battery is fine? Is there anything I should be wary of?


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Old 10-23-2012, 10:27 AM #2
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Default Re: Panasonic 18650+ Cheap charger

To be on the safe side you should get one of these.... LipoSack.com
Just incase..
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Old 10-23-2012, 11:28 AM #3
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Default Re: Panasonic 18650+ Cheap charger

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Originally Posted by treeman1 View Post
Using a cheap charger to charge the Panasonic battery is fine? Is there anything I should be wary of?
You might want to check the voltage output of the charger. Some cheap chargers I have tested were overcharging cells to 4.22V. Not a big problem, but was bad enough for me that I replaced it with a decent hobby charger.

Other than that, you should be fine, even though it doesn't completely follow the CC/CV charging method.

Cbeers!
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Old 10-23-2012, 06:12 PM #4
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Default Re: Panasonic 18650+ Cheap charger

So if it is overcharged to 4.2V, will the battery ACTUALLY be 4.2V when you start using it in the laser? The text on my charger is in Chinese, but it says something with 4.2V +-1% as well, so I assume it is the maximum overcharge.
Does the battery degrade faster this way/ any laser components?
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Old 10-24-2012, 04:04 AM #5
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Default Re: Panasonic 18650+ Cheap charger

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Originally Posted by treeman1 View Post
So if it is overcharged to 4.2V, will the battery ACTUALLY be 4.2V when you start using it in the laser? The text on my charger is in Chinese, but it says something with 4.2V +-1% as well, so I assume it is the maximum overcharge.
Does the battery degrade faster this way/ any laser components?
4.2V is the max voltage, so if you charge a cell to that value, it's not overcharging it. If you go above and beyond, you risk damaging the battery and shortening its life. After a couple of minutes you take the cell out of the charger, it will settle down to about 4.18-9 volts.

Your laser components should be safe even if the battery is fully charged to 4.2V.

Cheers!
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405nm Amazon Set
445nm BAMF Link
445nm 2358mW Peak The Bushwhacker by Dogs Best Friend
445nm Fantasy Link
532nm "200mW" DealExtreme Pointer
532nm Amazon Set
650nm Amazon Set
FastTech is the new DX. (Nope, prices have gone up, nevermind!)

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