On Sunday, September 23, 2012 6:15:04 PM UTC-4, Mike McCarron wrote:
Help!



I have carefully measured my current draw in my glider at .8 amp. l would

like to know if there is any reasonable explanation for why a 9 amp hour

battery goes from 13 volts open circuit fully charged to 11.6 volts in 4

hours.



MC

Mike,

Get a K2-Energy Lithium-Iron-Phosphate battery (http://store.peakbattery.com/12lfpba.html). They are expensive, but *much* lighter than the corresponding SLA type, and *much* better performance.

TA