1500lbs isn't very much weight so I personally don't see it being a problem. If regen is enabled, it will even be slightly recharging when going down the ramp. Battery maintenance consists of adding distilled water regularly, that's about it. Of course battery choice will be the deciding factor. Lithium is expensive up front but requires less charging and provides longer run time. Otherwise a lead acid battery, maybe paired with an opportunity charger(allows multiple charges per day vs the normal once a day)