Quote:
Originally Posted by john352
Need to ask:
How long do the batteries last before they did to be replaced, and what is the replacement cost?
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Depending on the "depth of discharge" DOD to 50% on lead acid batteries will give you up to 2000 cycles. But that is typically on an hour of total run time. If you discharge to 80% the life shortens to 500 cycles.
Most lithium chemistry allows for DOD to be 80% and still gets 1500-2000 cycles. While Lithium is twice the price, you get 3 times the life if are traveling 2 hours between charging. Plus Lithium is half the weight of lead, never needs water and absorbs recharge with less loss. Generally speaking, Friends don't let friends drive on acid.