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Old 09-13-2018, 06:12 PM   #1
clearchris
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Join Date: Dec 2013
City & State: San Antonio
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Line Voltage: 120v 60hz / 240v 60hz
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Default Li-ion AAA replacement with li-ion pack

Ok, I have this device, a skulpt chisel. It's acting funky, and the battery never goes higher than 70% charged anymore. I popped the case open, and instead of NiMH batteries I was expecting (older version had them), I found Li-ion batteries. Two 10440 AAA form factor 3.7v 320mah batteries. I can find 10440 batteries, but finding ones with solder tabs is a challenge. I'm really not into ebay li-ion batteries. I'm not soldering the tabs on myself, it's not worth the risk.

So, I have found a flat pack that will fit. I can cut the plug, solder the wires on, tape the pack down, and it's all good.

https://www.adafruit.com/product/258

My question is, will the electronic protection circuits on this pack interfere with the charging circuits on the board? The standard li-ion AAA batteries don't seem to have any obvious protection circuits on them.

Thanks!

Battery Datasheet:
https://cdn-shop.adafruit.com/produc...ROVED_8.18.pdf

Battery Protection IC
https://www.ablic.com/en/doc/datashe...on/S8261_E.pdf

And there is an 8814 mosfet which i assume cuts off the battery if something bad happens.

skulptboard.jpg
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