$25.09and up
Schumacher Electric BT55U Compact 6-Volt/12-Volt/24-Volt Battery and 12-Volt Alternator Tester for VRLA/AGM/gel Batteries, Battery State of Charge, Charging System Output, Black, 1 UnitAmazon & 1 more$363.99
Schumacher SC1352 250A 12V/24V Wheeled Battery Charger and Jump Starter – For Car, SUV, Truck, and Boat – Fully Automatic – 40A and 20A Boost Modes – Battery and Alternator TesterAmazon$233.09
Schumacher Electric SDC371 DC-DC Intelligent Battery Charger for Charging Auxiliary Batteries with Solar Power or a Vehicle Alternator, 40 Amps, 12 Volt, Black, 1 UnitAmazon