RC-Monster Forums - View Single Post

Steeni · 09.05.2009, 03:32 PM

Well, you're right if you're assuming that only the overall voltage counts as cutoff, means 8.4 V for a 2s Lipo pack. Your problem is the fact that on your "bad" pack a cell seemed to have drifted a little too far out for your built in balancer to be able to balance it out when charging at full rate.

Here's my tip: Charge that pack with only 0.1 C. That means if your pack is rated at 5000 mAh, then go charge the faulty pack with only 0.5 A instead of the 5A you would normally use. That way it would take about 10 hours to fully load your pack but it leaves your balancer with plenty of time to balance your cells out. Rince and repeat and after 3-4 times charging it that way your cells should be good enough to be charged normaly again.

If your problem persists after 5 times loading your pack with 0.1 C, I'm afraid that a cell or, and that's far more often the case, the internal wiring of your pack is faulty.

	(#14)
Steeni RC-Monster Stock Offline Posts: 10 Join Date: Feb 2009	09.05.2009, 03:32 PM Well, you're right if you're assuming that only the overall voltage counts as cutoff, means 8.4 V for a 2s Lipo pack. Your problem is the fact that on your "bad" pack a cell seemed to have drifted a little too far out for your built in balancer to be able to balance it out when charging at full rate. Here's my tip: Charge that pack with only 0.1 C. That means if your pack is rated at 5000 mAh, then go charge the faulty pack with only 0.5 A instead of the 5A you would normally use. That way it would take about 10 hours to fully load your pack but it leaves your balancer with plenty of time to balance your cells out. Rince and repeat and after 3-4 times charging it that way your cells should be good enough to be charged normaly again. If your problem persists after 5 times loading your pack with 0.1 C, I'm afraid that a cell or, and that's far more often the case, the internal wiring of your pack is faulty.