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cloudless
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07.06.2009, 02:21 PM

Hi guys, I'm new to RC and new to this forum. This is a great thread!

I have a question I haven't seen addressed. I have a Losi 2s 1000mAh pack. It has Losi's "Internal circuit protection to prevent over charge and over discharge", to quote from their documentation. Well, that circuitry has bit the dust. I've opened the pack, and the cells still look fine, and their individual voltage is good.

Sure it is a small/cheap pack, but it seems a shame throw it away with good cells. Is there any reason not to turf the protection circuitry (as Losi seems to have done for their more recent 2s packs). I'm running a Tekin ESC (with low V cutoff) and using the Losi wall-wart Lipo charger (LOSB1208), which I assume ha overcharge protection built in, so I'm not sure why I'd need the in-pack protection too.

Has anyone had problems with this circuitry before and/or have reasons not to proceed with bypassing it?

UPDATE:

After sitting for a day the pack is 'fixed', we'll see how long it lasts. I figure either it had a slow to reset thermal cutoff (I let it sit > 2 hours prior to pulling it open and posting the above, so I doubt it, and it was barely warm to start with), or when I plugged it into the charger that reset something in the protection circuitry. I'll keep an eye on it, and if nothing abnormal happens I guess I'll leave it. If it cuts out again, I'll take another look at bypassing the internal curcuitry.

Last edited by cloudless; 07.06.2009 at 10:37 PM. Reason: New info
   
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