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Old Mar 03, 2007, 06:21 PM
Rufus T. Firefly
Lightnin' Bug's Avatar
Massachusetts, USA
Joined May 2004
500 Posts
charger/balancer question

Hi, I'd like to know why my balancer tells me that my lipos are fully charged a full half an hour before my charger beeps. I'm using a Thunder power 425 charger, and a TP 205 balancer. Charging a TP 3 cell 2070 mAh extreme pack. Should I shut down the charger when the balancer beeps, or should I keep charging until I hear the charger beep? Thanks
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Old Mar 03, 2007, 08:13 PM
Southern Pride
everydayflyer's Avatar
Haralson County GA. USA
Joined Oct 2004
34,850 Posts
The balancer is not telling you the battery is fully charged. It is telling you one or more cells has reached 4.2V. There is a difference.

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Old Mar 04, 2007, 02:10 AM
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ggcrandall1's Avatar
USA, GA, Marietta
Joined Aug 2005
6,433 Posts
Yes you should shut down the charger. If one cell has reached 4.2 volts and the charger is still going then eventually that cell will be overcharged and could possibly be damaged.

Stop the charge and measure the voltage on each cell to see what is going on. If one cell has reached 4.2 volts then keep the balancer on until the pack is balanced. Then if the pack is still low you can continue the charge.

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Old Mar 04, 2007, 01:51 PM
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San Jose Ca / RSA flyer
Joined May 2003
8,030 Posts
the Tp 205 is a current BLEEDER
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