6V/12V 1 AMP SMART BATTERY CHARGER BY XTEND for AGM, SLA, and Gel Batteries
Is it possible to charge a 6v battery with a 12v charger? - Quora
No Polarity 6V-12V Charger - Quick Charge | Impact Battery
Schumacher Electric Schumacher Pro Automotive 6-Volt/12-Volt 8-Amp/2-Amp Battery Charger and Maintainer with Auto Voltage Detection SPR1628 - The Home Depot