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wattmeter question

Old 09-30-2006, 09:24 PM
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Default wattmeter question

I charged my TP4200 at 4.10 A to 12.60 volts and 1.151 AH according to the display readout on the Astro 109. Then discharged the battery to 8.68 volts and 3.432 AH. I am trying to find out if the battery is still good. I think the AH absorbed by the discharger should read closer to 4200, but I'm not sure. The performance of the airplane has definitely been suffering. I would certainly appreciate some help! RHovie.
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Old 10-01-2006, 01:34 AM
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Location: Central Pennsylvania
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Sounds like it's right to me. If you took it down to 4.200AH, the battery would be completely empty and you would have over-discharged and perhaps ruined your battery. As it is you took the pack down to 2.9 volts per cell which is plenty low enough. I wouldn't want to take it down any farther than that.
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