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Old 11-15-2009, 10:45 PM
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Toysrme
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Re: Very effective way of increasing battery life (charging related)

the phone draws whatever power it asks for from a USB port. which is the same amount. (set in .250ma incriments)

lipo's have neglidgeable memory, and do NOT need to be broken in what so ever. SOC = State of Charge:

their lifespan is finite and always degrading.
long term storage ALWAYS be stored at 40% SOC
Short term storage should be at 75-80% SOC
the LESS you run them down between recharges the LONGER they live.
Running a lipo below 20% SOC signifagantly shortens the lifespan.
40*F storage temperature is near ideal

For example after 1 year
40% SOC / 100% SOC
0*C 98% / 94%
25*C 96% / 80%
40*C 85% / 65%
60*C 75% / N/A 60% SOC retained for ONLY 3 months





Smart phones have terrible batter life to being with (high relative current draws)

HOWEVER IMO we are experiancing extremely bad battery life on average for two primary reasons:
1) The LIPO's are stored incorrectly AND/OR are old stock
2) The voltage scale / calibration of the OS is NOT reading the lipo cell correctly
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