Grab a NOCO GENIUS10 charger.
https://no.co/genius10They are approx $100. Home Depot sells them, Battery Warehouse, Amazon... Get best reviews and ratings. I love mine. Have the 10 and the 5.
GENIUS10 6V/12V 10-Amp Smart Battery Charger
10-Amp Battery Charger, Battery Maintainer, and Battery Desulfator
Introducing the all-new GENIUS10, one of our most powerful, highest-performing, energy-efficient, and compact chargers yet. The GENIUS10 is a 6-volt and 12-volt battery charger, battery maintainer, and battery desulfator rated at 10-amp for lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
Meet the GENIUS10 - Similar to our G7200, just better. It's 17% smaller and delivers 115% more power. And it's simpler and easier to use than ever before.
Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
Charge dead batteries - Charges dead batteries as low as 1-volt. Or use the all-new Force Mode that allows you to take control and manually begin charging dead batteries down to zero volts.
Simple to set up and use - Plug-in, connect to the battery, select a charge mode, and start charging your battery. A fully-automatic, worry-free battery charger for year-round use.
Restore your battery - Detects sulfation and acid stratification and restores lost performance for stronger engine starts and extended battery life.
Compatible with all types of vehicles - Charge and maintain cars, motorcycles, lawnmowers, ATVs, tractors, trucks, SUVs, boats, classic cars, hot rods, and more - you name it.
