I have used them at Maligne Lake for 31 years and if you get r28 you get 180 amp hours or get r32 you get 205.. i get 7 to 10 years out of mne but recharge every 3 months.. i use cat batterys too 430 amp hours but am getting to old to lift..lol.. i use a 55 lb thrust Mini-kota 12 volt with amp meter and variable speed to push a 14 ft aluimium Misty River
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