YONHAN Car Battery Charger 12V/8A 24V/4A Intelligent Automatic Battery Charger/Maintainer with LCD Screen Pulse Repair Charger Pack for Car Truck Motorcycle Lawn Mower Boat etc https://www.amazon.com/dp/B089VRXB2W/ref=cm_sw_r_apan_glt_fabc_TXNEX2CNCVXRFM3M431B?_encoding=UTF8&psc=1

this is the charger I use and it works great, this one can charge 24v as well which is convenient if you decide to ever run 2 12v in series so you don't have to disconnect them and charge them separately