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Batteries & Chargers Discuss Li-P, Li-Ion, NiMh, Nicad battery technology and the chargers that juice 'em up!

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Old 08-24-2014, 09:32 AM   #1
Join Date: Jun 2014
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Default Slow charging

I have an OverLander RC6-VSP charger and a selection of batteries, all 3s
1x Hobbyzone branded 1300mah
1x E-Flite branded 1300mah
2x OverLander super sport 1350mah
2x OverLander sport 2200mah

All of these batteries are taking at least twice as long as you would expect to charge. From storage state ~50% charge, at 2C Settings they were taking an hour each. Even though the charger seemed fine. It was taking ages to do the last bit... That is... Charging seemed quick until one cell hit 4.2v and then the balancing at low current was taking ages.

This never happened before this time, but I haven't used the batteries for a month or so. All voltages were pretty well balanced while stored and I always use balance charging and not just charging mode.

Any ideas as to why this might have happened? Once charged the batteries flew as normal, but taking so long to charge is far from ideal... Have they simply lost balance and will be OK next time, or is this a sign of faulty charger and/or batteries?

I'm slightly concerned, being a bit of a noob with lithium batteries.
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