TOPDC 25A 12V 24V Automatic Battery Charger & Maintainer – Smart 9‑Stage Trickle Charger with Boost Mode, Power Supply & Alternator Tester – Lead-Acid (AGM/STD/Gel) & LiFePO4 (LFP)

["3 Adjustable Charging Currents – This 12V 24V automatic battery charger lets you choose 4A, 12A, or 25A for 12V; 4A or 12A for 24V. Ideal for fast or gentle charging of trucks, RVs, and marine batteries.","Built‑In Boost Mode (35A) – Need a jump? Activate boost mode to get 35A (12V) or 20A (24V) for 5 minutes. Quickly starts dead batteries without another vehicle.","Power Supply & Alternator Tester – Use as a 13.6V 25A DC power supply for bench work. The alternator tester evaluates your vehicle’s charging system – green means OK, red needs attention.","Connect & Forget Maintenance – After full charge, this battery maintainer continuously monitors voltage. Resumes charge at 12.8V (lead‑acid) or 13.1V (LiFePO4) to keep batteries ready.","Advanced Battery Recovery – Desulfation and recondition modes (dES/rEP) revive sulfated or aged batteries. Also features battery activation mode for deeply discharged (<0.5V) batteries.","Safe & Universal Compatibility – Reverse polarity and spark‑proof protection. Works with 6V 12V battery charger? Actually this model supports AGM battery charger, STD, GEL, and LiFePO4 battery charger for 12V/24V systems. UL/CSA certified."]