Review on 🔋 IEIK Smart Charger for Cars, Trucks, Motorcycles, Lawn Mowers, Boats, ATVs - 7-Stage 12V/6A Automotive Battery Charger & 24V/3A Maintainer for Lithium, LiFePO4, Lead-Acid, and Deep Cycle Batteries by Kris Feezy

This thing and its larger 24v sibling performs like a champ, way better than I thought it would. the repair function works, fixed a few tractor batteries and still a few months without a battery, most chargers don't even charge and just give an error. Just buy it, it's one of the few cases where it's both cheap and good. Can't say how long it lasts but mine is 10 months old and still working. Get one for a friend