Rick,
I do not know how long these batteries last.
Here is an idea. I purchased a small offshore cheapy battery charger from
somewhere!!! Maybe Harbor Freight. Very small about 2x2 x.75
inches which puts about 150ma into the battery. The idea is to keep the
battery topped off while in storage. It is my understanding that batteries
decline in power as they sit on the shelf. I connect it to the exhaust
pipe clamp and an external power connector installed on the firewall right side
low with a battery cable attached to a arc welder female plug connector. I
carry the male stinger end of the welder connector in the plane and plug
it into the female receptacle when needed. This serves as a connector for
a jumper cable if needed. Else the female connector is protected from shorting
out. Just plug in the connector, attach the charger and the battery stays
topped off whil you are away and the plane plays hanger queen.
Interesting, I too am starting today on my third
annual.
Bob Smiley
N94RJ
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