Got a 36v troller running on lead acids charged by Dual Pro 4 bank charger. Two of the three batteries are four years old and testing poorly. Seriously considering the jump to lithium but know the Dual Pro can’t be reprogrammed for lithiums. Trying to decide between a NOCO Genpro 4 bank or MinnKota Precision 440 PCL. The NOCO is about $50 more. Not familiar with either brand so experience or cautions welcomed. Thanks