Battery Discharge and Life


Allowable % of Battery Discharge

Battery Type

Maximum Discharge

Car Batteries

~ 5%

Marine Deep Cycle Batteries

50% Suggested Maximum

Deep Cycle Batteries Wet Lead Acid & Sealed

(Golf Cart, Surrette, Trojan, MK/Deka, Concord, etc.)

50% Suggested

80% Maximum

Estimated Battery Life

Battery Type

Typical Life
(Assuming proper maintenance)

Car Batteries

~ 1- 3 Years

Golf Cart Batteries

~ 5 Years

Sealed Deep Cycle Batteries

(MK/Deka, Concord, etc.)

~ 5 Years

Surrette S-460 and S-530 Lead Acid Wet Deep Cycle Batteries

~ 7 - 10 Years

Other Surrette Lead Acid Wet Deep Cycle Batteries

~ 10 - 15 Years

Other Lead Acid Wet Deep Cycle Batteries

(Trojan, etc.)

~ 5 - 7 Years