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There is an interesting article on page 113 of the Dec.,'06 issue of EAA Sport Aviation. It notes that most batteries have a maximum life of 4 to 5 years due to various causes that are not repairable. The author also states that the more common failure is sulfating , and describes a method for desulfating. It is a lengthy and involved procedure beyond my capabilities. However, over the past 8 years I have regularly used an inexpensive device to prevent sulfating. It is a GUEST Battery Pal automatic float charger (not a trickle charger). I plug the AC/DC inverter device into a 12V DC connector behind my seat and connected to my battery. I do this almost every night between flights, although it is most useful for longer periods of airplane inactivity. The Battery Pal maintains a float charge of 13.5 V and replaces the battery self-discharge. It will not overcharge your battery or boil electrolite. DON ============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm
