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8D life expectancy

R

realcaptron

Regular Contributor
Guys and gals......what would you deem to be the normal life expectancy of an 8D dual purpose deep cycle/starting battery? Mine are 3 years old, always on the charger on shore power when away from boat and one of them cranking slow now. Just wondering how long they should last.
 
Ayuh,....... Get a meter, 'n do a load test, that'll give you an idea of whether it's dyin', or not,.....

If the battery load tests Ok,..... Clean all of the battery cable connections, all the way to the starter, 'n to the block on the ground side,.....
 
Unless its a 'smart charger', staying plugged in usually shortens battery life.....

cheap ones usually go 3-5 years.....brand names about double that.....with proper maintenance in a decent installation....
 
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