4 Bank Marine Battery Charger,40A 12V Onboard Charger for AGM & LiFePO4 | Four Independent 10A Charging Banks with Individually Selectable Modes in a Rugged IP68 Waterproof Design

Keep multiple 12V batteries charged and ready with this 4 Bank Marine Battery Charger. Designed for onboard marine applications, this charger provides four independent 10A charging channels, allowing you to charge up to four batteries simultaneously without sharing power between banks. Each charging bank operates independently with selectable charging modes, helping deliver the appropriate charging profile for different battery types, including Lead-Acid and LiFePO4 batteries. The smart charging system automatically monitors battery status and adjusts the charging process to support efficient and reliable performance. Built with a compact onboard design and an IP68-rated waterproof housing, this charger is suitable for boats, fishing vessels, RVs, and other outdoor power systems where dependable multi-battery charging is needed. The simple installation design and clear LED indicators make it easy to monitor charging status at a glance. Whether maintaining marine starting batteries, deep-cycle batteries, or mixed battery setups, this 40A 4-bank charger provides a convenient solution for managing multiple 12V battery systems in one integrated unit.

• ✅[4‑Bank 10A Simultaneous Charging]This 12V 4 bank battery charger delivers 10A dedicated output per bank, supporting up to four 12V batteries at the same time with independent LED charging indicators for each bank. It serves as a reliable onboard battery charger for multi‑battery setups on marine vessels and RVs.
• ✅[4 Charging Modes For All Battery Types]This smart battery charger features 4 selectable charging modes: 12V Standard Lead‑Acid (Wet/Gel), AGM, Lithium (LiFePO4, built‑in BMS required) and Battery Repair Mode. The repair function helps restore old, idle or sulfated batteries, with simple one‑button switching for easy operation.
• ✅[Thermal Compensation & Auto Memory]Equipped with automatic thermal compensation technology, this charger dynamically adjusts charging profiles based on ambient temperature to maximize charging performance in extreme cold and hot conditions. The built‑in auto‑memory function resumes your last selected mode after power outages, and it works as a fully automatic trickle charger and battery maintainer for long‑term battery upkeep.
• ✅[IP68 Waterproof for Marine Environments] This car charger features a fully sealed, IP68-rated housing. It withstands water splashes, dust, and temporary submersion, while also resisting salt spray and high-humidity conditions found in marine engine compartments, ensuring reliable performance year-round. Additionally, the system is safeguarded by reverse polarity protection, overheat protection, and battery voltage monitoring, with a dedicated LED indicator to signal error alerts.
• ✅[Wide Application For Marine & RV Use]This rugged onboard charger is compatible with a wide range of 12V battery setups, ideal for fishing boats, yachts, RV campers and trolling motors. It works seamlessly with both deep cycle and starting batteries for daily charging and long‑term maintenance.