Litime 12V 40A DC-DC Charger with MPPT – Dual Input for LiFePO4 RV & Off-Grid

All-in-One Charging for RVs, Campers, Trailers, and Off-Grid Systems

The Litime 12V 40A DC-DC charger combines smart control with robust power delivery. It works with a range of 12V chemistries and accepts both DC input and solar power, giving you a compact, plug-and-play solution for everyday adventures or home backup setups. Expect smoother battery maintenance, faster top‑ups, and flexible operation in variable environments.

Key benefits at a glance

• Wide battery compatibility: Supports 12V LiFePO4, AGM, Gel, SLA, and Calcium batteries, plus an ACC wire for both smart and traditional alternators.
• All-in-One, high-efficiency charging: Charge via DC input, solar panels, or a hybrid of both—no extra controllers required.
• Smart MPPT efficiency: Built-in MPPT with up to 99% tracking efficiency and up to 93% conversion efficiency for reliable power transfer.
• Emergency reverse charging: If the starter battery is depleted, you can reverse charge from the auxiliary battery to help you back on the road faster.
• Strong charging capacity: Up to 40A of charging current to restore battery levels quickly or power DC loads directly in RVs, campers, trailers, or off-grid systems.
• Multi‑protection: Over‑voltage, reverse polarity, over‑temperature, and charging timeout protections extend battery life and ensure safe operation. Includes reactivation after BMS shutdown.
• Certifications: FCC, CE, and RoHS compliant for safe, eco-friendly use.

Important note: The unit is not waterproof, so it should be used in protected, indoor, or dry environments away from direct exposure to water.

Real-world use cases

• Keep your RV or camper powered reliably on long trips with a compact, all-in-one charging solution.
• Maintain auxiliary batteries for trailers or off‑grid cabins without carrying multiple controllers.
• Use solar input to supplement DC charging, optimizing energy use during sunny days and cloudy ones alike.
• Rely on emergency reverse charging to recover from a depleted starter battery and reduce downtime.

With Litime, you can explore more flexible charging options, enjoy greater peace of mind, and tailor power management to your lifestyle—without overpromising results. Consider this charger as a capable partner for versatile power needs rather than a guaranteed outcome.