DC To DC Charger With MPPT, 40A 520W, Dual Input

DC to DC charger with MPPT delivers fast, efficient charging from your alternator or solar input, helping keep house and starter batteries ready for travel and backup power. With up to 40A/520W output and smart multi-stage charging, it supports common 12V/24V systems in RVs, campers, trailers, cars, and off-grid setups. Built-in MPPT prioritizes solar energy to optimize panel output and reduce alternator load for cleaner, steadier charging.

• Delivers up to 40A/520W charging with multi-stage control for stable battery top-ups


• Optimizes solar input with built-in MPPT to maximize panel output and reduce alternator strain


• Supports reverse charging to help start your vehicle from the auxiliary battery in a low-start situation


• Fits 12V/24V systems with 4 modes: 12-12, 12-24, 24-12, 24-24 for flexible installs


• Includes LED indicator, XT60 quick-connect cable, and 2 DIP keys for quick battery selection

Designed for real-world installs where space, heat, and mixed power sources matter, this on-board DC to DC battery charger combines alternator and solar panel dual input with protections for over/under-voltage, reverse polarity, over-temp, and short circuit. A built-in cooling fan helps maintain performance in higher temperatures, while broad battery compatibility supports LiFePO4, lead-acid, GEL, AGM, and calcium types—plus most portable power stations. Grab yours today and simplify charging across your vehicle, RV, or home backup setup.

• Charging current: 40A


• Max output power: 520W


• Input voltage: 12V/24V


• Charging voltage range: 12.6V–29.4V


• Inputs: Solar panel / alternator (dual input) with MPPT


• Indicators & accessories: LED indicator, XT60 quick-connect cable, 2 DIP switch keys


• Protection: Overvoltage, undervoltage, reverse polarity, over-temperature, short circuit; cooling fan