Do you guys change out batteries based on time or wait for them to die?
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I have/had multiple batteries on a dual battery switch, i wait until they stop holding charge and die, then replace.
I replace my waverunner and snowmobile batteries every two years. A waverunner is pretty helpless with a bad battery and I can't pull start my 4-stroke snowmobiles so it is cheap insurance.
3 years minimum for replacement unless it starts acting up. After 3 years its up to the person. If a battery dies before 3 years....there was something wrong with it IMO.
do you leave it on a tender in the winter?