26650 charger with cut off

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Helios-
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Joined: 01/18/2012 - 21:12
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You need to measure current & voltage at the same time throughout the whole charge cycle to know what its doing.
Charging to 4.14V, then 4.15v after awhile doesn’t tell you its CC/CV….

Ending at 4.15v does not equal ‘works well’.
There are any number of ways to get to 4.15v. Some are dangerous.


Counterfeit 18650s, 2,<a href=“http://

unknown00101
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Found my old hyper chinese cheapie and decided to rip it apart:

Worth keeping , or should I continue with my plans to use it as a battery holder in my WIP compact test bench?

Edit: R5 is crispy, meh, I’ll just scrap it.

Helios-
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Thanks for posting a picture! Beer
What charger is that? Link or pic of the front maybe?

If it has a nice shell or adjustable slider I’d keep it as a charge cradle or tp4056 host.

China’s favorite game: How cheap can we make it yet have it (usually) not blow up the first time its plugged in. Bonus points for dieing just past the 45 day paypal dispute window!


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unknown00101
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Helios- wrote:
Thanks for posting a picture! Beer
What charger is that? Link or pic of the front maybe?

If it has a nice shell or adjustable slider I’d keep it as a charge cradle or tp4056 host.

China’s favorite game: How cheap can we make it yet have it (usually) not blow up the first time its plugged in. Bonus points for dieing just past the 45 day paypal dispute window!

http://www.fasttech.com/products/0/10005556/1435600-ultrafire-dual-slot-...

It pretty well looks identical to this one. 650ma listed output on the sticker though. Came with my first personal Liion purchase off ebay.

I just got done ripping out all the excess plastic and filing it down flat.

Seeing that R5 component fried reminds me of how that probably happened. I placed the battery in backwards IIRC, with a bit of smoke.

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