Details
Wagan 7403 6V and 12V 4.0A Intelligent Battery Charger, Battery Maintainer, Fully-Automatic Smart Charger

Designed for Battery Types: Lithium iron-phosphate (LiFePo4), LPF, SLA, AGM, Maintenance Free, Flooded, Wet Cell, VRLA, Gel, Lead-Acid, Vented, Deep Cycle
Intelligent Battery Management: feature internal circuitry which detects the battery type, current battery charge, overall battery condition, and automatically responds to optimize charging for that specific battery.
Fully-Automatic Charging: detects the battery and its needs - then applies the optimal charge current.
9-Stage Charging: Primary Evaluation (Diagnostic), Recovery, Soft Start, Pulse, Reconditioning, Bulk Charge, Absorption Charge, Evaluation (Diagnostic), and Maintenance Charge
Beyond maintenance - this is an advanced battery maintainer that features a fully-automatic, worry-free battery charger for everyday use - with zero overcharge.