Xantrex 804-0440 Statpower Truecharge 40+ Multistage Battery Chargers Are Microprocessor Controlled, 40 amp output, Charges up to three battery banks simultaneously, Independent settings for AGM, flooded or gel lead-acid batteries, Wide voltage range
ProMariner ProNautic 1240P 40 Amp 3 Bank Battery Charger [63140]
EverStart Maxx 15 Amp Battery Charger and Maintainer with 40 Amp Engine Start (BC40BE) - Walmart.com