--- product_id: 542525836 title: "12V 40A DC-DC Battery Charger with MPPT Solar Controller, Dual Input Smart Charger for 14.6V LiFePO4 Lithium Batteries, Fast Charging for RVs, Campers, Trailers, Solar, Home Backup and Off-Grid" brand: "litime" price: "11245647₫" currency: VND in_stock: true category: "Litime" url: https://www.desertcart.vn/products/542525836-12v-40a-dc-dc-battery-charger-with-mppt-solar-controller store_origin: VN region: Vietnam --- # 40A rapid charging power Emergency reverse charging 99% MPPT solar tracking efficiency 12V 40A DC-DC Battery Charger with MPPT Solar Controller, Dual Input Smart Charger for 14.6V LiFePO4 Lithium Batteries, Fast Charging for RVs, Campers, Trailers, Solar, Home Backup and Off-Grid **Brand:** litime **Price:** 11245647₫ **Availability:** ✅ In Stock ## Summary > 🔋 Charge smarter, travel farther—never get left powerless again! ## Quick Answers - **What is this?** 12V 40A DC-DC Battery Charger with MPPT Solar Controller, Dual Input Smart Charger for 14.6V LiFePO4 Lithium Batteries, Fast Charging for RVs, Campers, Trailers, Solar, Home Backup and Off-Grid by litime - **How much does it cost?** 11245647₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/542525836-12v-40a-dc-dc-battery-charger-with-mppt-solar-controller) ## Best For - litime enthusiasts ## Why This Product - Trusted litime brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power Up Fast ⚡:** Delivers a robust 40 Amps output to recharge your batteries in as little as 3 hours—cut downtime and keep your adventures rolling. - • **Solar Smart ☀️:** Integrated MPPT controller with 99% tracking efficiency maximizes solar input, eliminating the need for extra gear and saving space. - • **Emergency Boost 🔄:** Reverse charging capability lets you jumpstart your starter battery from the auxiliary one—no roadside wait, just hit the road. - • **Safe & Certified 🛡️:** Packed with multi-protection features and certified by FCC, CE, and RoHS, ensuring reliable, eco-friendly, and worry-free operation. - • **Dual Input Flexibility 🔌:** Seamlessly charges from DC input, solar panels, or both simultaneously in hybrid mode for ultimate versatility on the go. ## Overview The LiTime 12V 40A DC-DC Battery Charger with built-in MPPT solar controller is a versatile, high-efficiency charger designed for 14.6V LiFePO4 and other 12V batteries. It supports dual input charging from DC sources and solar panels with up to 40 Amps output, enabling fast recharge times and hybrid charging modes. Featuring emergency reverse charging, multi-layer safety protections, and industry certifications, it’s ideal for RVs, campers, trailers, home backup, and off-grid power systems. ## Description desertcart.com: LiTime 12V 40A DC-DC Battery Charger with MPPT Solar Controller, Dual Input Smart Charger for 14.6V LiFePO4 Lithium Batteries, Fast Charging for RVs, Campers, Trailers, Solar, Home Backup and Off-Grid : Automotive ## Features - Compatibility: Works seamlessly with 12V LiFePO4, AGM, Gel, SLA, and Calcium batteries. Equipped with an ACC wire for both smart and traditional alternators, it automatically adjusts charging power, giving you a true plug-and-play setup without extra hassle. - All-in-One High-Efficiency Charging: Charge your battery via DC input, solar panels, or both in hybrid mode. The built-in MPPT (99% tracking efficiency) replaces extra controllers, saving cost and space while delivering up to 93% conversion efficiency. - Emergency Reverse Charging: In case your starter battery runs flat, this 12V DC-DC charger can reverse charge directly from the auxiliary battery, letting you get back on the road quickly without waiting for roadside assistance. - 40A Output for Faster Charging: With up to 40 Amps of charging current, this dc to dc charger quickly restores battery levels. Can charge service batteries or directly power DC loads, ideal for RV, Camper, Trailers, Home Backup and Off-Grid Power Systems. - Multi-Protection: This LiTime battery charger features over-voltage, reverse polarity, over-temperature and charging timeout protection, helps extend battery lifespan, ensure safe operation in battery charging. It can also reactivate lithium batteries after BMS shutdown. FCC, CE, and RoHS certifications, ensuring safe and eco-friendly operation. - Warning: This 12 volt 40 amp dc to dc battery charger is not waterproof - not suitable for Marine environments such as boats, ships, yachts, trolling motors, etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C4SMQ1PX | | Amperage | 40 Amps | | Battery Charge Time | 3 Hours | | Best Sellers Rank | #62,032 in Automotive ( See Top 100 in Automotive ) #277 in Battery Chargers | | Brand | Litime | | Color | black | | Compatible Devices | Batteries (LiFePO4, AGM, Gel, SLA, Calcium) and systems (RV, Camper, Trailers, Home Backup, Off-Grid) | | Connector Type Used on Cable | DC power connector | | Current Rating | 40 Amps | | Customer Reviews | 3.8 3.8 out of 5 stars (61) | | Input Voltage | 12 Volts (DC) | | Item Dimensions D x W x H | 7.44"D x 5.83"W x 1.89"H | | Item Weight | 2.4 Pounds | | Manufacturer | LiTime | | Model Number | L12V40A-DC-Z | | Number of Ports | 2 | | Output Voltage | 12 Volts | | Specification Met | CE, FCC, RoHS | | Warranty Description | 2 Years Warranty | ## Product Details - **Brand:** Litime - **Color:** black - **Item Weight:** 2.4 Pounds - **Output Voltage:** 12 Volts - **Product Dimensions:** 7.44"D x 5.83"W x 1.89"H ## Images ![12V 40A DC-DC Battery Charger with MPPT Solar Controller, Dual Input Smart Charger for 14.6V LiFePO4 Lithium Batteries, Fast Charging for RVs, Campers, Trailers, Solar, Home Backup and Off-Grid - Image 1](https://m.media-amazon.com/images/I/71UNjnxThrL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: When installing the DC-DC charger, are there any precautions I need to be aware of?** A: First, installing the charger vertically will improve venting and heat dissipation of the charger. Additionally, positioning the DC-DC charger nearer the service battery is advised. **Q: Can the battery be charged with both the solar and the alternator at the same time?** A: The DC-DC charger will choose the DC input automatically rather than charging the service battery with both the solar and DC inputs. **Q: Can LiTime 12V 40A DC-DC charger activate the low voltage LiFePO4 battery?** A: YES, LiTime 12V 40A DC-DC has a lithium battery activation function, but the battery needs to be disconnected from the load for activation. **Q: Should I add breakers (fuses) when using a DC-DC charger?** A: YES, it is strongly advised. It is suggested that a breaker be installed between the DC-DC charger and the starter battery. ## Frequently Bought Together - LiTime 12V 40A DC-DC Dual Input Battery Charger with MPPT fit for 12V LiFePO4, Lead-Acid, SLA, Gel, AGM, Calcium Battery, Charger with Anderson Connector Reverse Charge for RVs Campers Trailers Boats - LiTime 500A Battery Monitor with Shunt, 8V-120V Battery Monitor for RV Motorcycle Golf Cart Solar Panel with LCD Backlight Screen Buzzer Alarm, Capacity Percentage Time Power Voltmeter Display - TKDMR 10pcs 1/0 AWG-3/8 Battery Lugs,Heavy Duty Wire Lugs,Ring Terminals,Battery Cable Ends,0 Guage terminals,Battery Terminal Connectors with 10pcs 3:1 Heat Shrink Tubing --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/542525836-12v-40a-dc-dc-battery-charger-with-mppt-solar-controller](https://www.desertcart.vn/products/542525836-12v-40a-dc-dc-battery-charger-with-mppt-solar-controller) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-30*