On Nov 17, 2:46 pm, " wrote:
On Nov 17, 2:41 pm, " JimH" ask wrote:



I have never had a problem just disconnecting the batteries on my boat
(fully charged) and leaving them in place during the winter lay-up.

I have bought 4 batteries in 4 years now.

The battery will not be strong enough to start the PWC (even when the
battery charge ways the battery is full).

The math here just doesn't make sense althogh I am not doubting you. I
would look into other conditions that might cause the problem, such as
wiring and connectors. A wet cell should produce about 1.2 volts per
cell unless one goes bad / becomes sulfated. If all the cells are
good, you should have plenty of juice at the battery. A typical lead
based wet cell battery design has not changed in decades that I know
of and a wet cell should last from 2-4 years typically, and can of
course last considerably longer. Although I have not tried one yet, if
I ever need a new trickle charger, I will get one of the new high tech
ones that monitor the battery and adjust accordingly...