--- product_id: 766108624 title: "Renogy REGO 40A DC-DC MPPT Battery Charger 12V, Dual Input Solar/Alternator" brand: "renogy rego" price: "R793" currency: ZAR in_stock: false url: https://www.desertcart.co.za/products/766108624-renogy-rego-40a-dc-dc-mppt-battery-charger-12v-dual store_origin: ZA region: South Africa --- # 40A high-power charging 670W solar input capacity Bluetooth app control Renogy REGO 40A DC-DC MPPT Battery Charger 12V, Dual Input Solar/Alternator **Brand:** renogy rego **Price:** R793 **Availability:** ❌ Out of Stock ## Summary > πŸ”‹ Power Up Your Adventure β€” Never Get Stranded Again! ## Quick Answers - **What is this?** Renogy REGO 40A DC-DC MPPT Battery Charger 12V, Dual Input Solar/Alternator by renogy rego - **How much does it cost?** R793 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/766108624-renogy-rego-40a-dc-dc-mppt-battery-charger-12v-dual) ## Best For - renogy rego enthusiasts ## Why This Product - Trusted renogy rego brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Smart Solar-First Logic:** Cuts fuel costs by 25% by prioritizing solar energy, letting you run appliances all night without draining your engine. - β€’ **Dual Power Source Charging:** Seamlessly charges via alternator while driving and solar panels when parked for uninterrupted power. - β€’ **Industry-Leading 93% Efficiency:** MPPT technology extracts 30% more energy from solar panels, charging 33% faster than standard models. - β€’ **Plug & Play with App Monitoring:** Install in 15 minutes with color-coded cables and monitor battery health and errors remotely via Bluetooth app. - β€’ **Revive Dead Batteries Instantly:** Automatically reactivates deeply drained LiFePO4 batteriesβ€”even at 0Vβ€”saving you costly replacements. ## Overview The Renogy 40A Solar + Alternator Charger is a cutting-edge MPPT DC to DC lithium/gel battery charger designed for RVs and boats. It delivers up to 40 amps of power, supports up to 670W solar input, and features smart solar-first logic to reduce fuel consumption by 25%. With 93% charging efficiency and dead battery revival technology, it ensures reliable, fast charging from both alternator and solar sources. Bluetooth control and rugged weatherproof design make it perfect for off-grid professionals seeking hassle-free, efficient power management. ## Description 🚐 Revive Dead Batteries & Slash Fuel Bills! Tired of $200 battery replacements? 40A charger automatically reactivates "dead" LiFePO4 batteries (even at 0V!) while parked via solar or driving via alternator. Solar-first logic cuts fuel costs 25% – charge fridges/lights all night! Handles 670W solar panels (30% more power than PWM) with 93% efficiency. Installs in tight RV/truck spaces in 15 mins. Waterproof casing survives boats/monsoons. Monitor via App + BT-2 (sold separately). Works with all batteries: LiFePO4 for campers, Gel for boats. ## Features - 🚐 Never Replace a "Dead" Battery Again: Automatically reactivates deeply drained LiFePO4 batteries (even at 0V!) – saving you $200+/battery. Charges while driving (alternator) AND parked (solar), delivering 40A power for RVs/boats. Solar-first logic cuts fuel costs by 25% - ⚑ 93% Efficient Charging - 33% Faster: Industry-leading efficiency converts 93% of solar/alternator power into battery charge. MPPT tech squeezes 30% more from panels vs cheap chargers. Charges 40% faster than 30A models – run your fridge/fan all night - 🌞 670W Solar Input for Off-Grid Freedom: Handles up to 670W solar panels (supports 500W+ systems). Smart switching between solar/engine power – no manual toggling! Max 32V input protection prevents panel damage - πŸ›‘οΈ Idiot-Proof Safety for Peace of Mind: Survives marine salt spray and desert heat (-4Β°F~140Β°F). Auto-shuts off during short circuits/reverse connections. Temperature compensation protects lead-acid batteries in extreme weather - πŸ“± Control from Your Beach Chair: Monitor voltage/errors via App + BT-2 module (iOS/Android). LED indicators glow red for faults – no guesswork! Install in 15 mins with color-coded cables (fits tight truck beds) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0FCFM5RVB | | Amperage | 40 Amps | | Brand | RENOGY REGO | | Color | Black | | Compatible Devices | RV, Boat, Deep-cycle Batteries (LiFePO4, Gel, Lead-acid), Alternators, Solar Panels | | Connector Type Used on Cable | Battery Clamps/Ring Terminals | | Current Rating | 40 Amps | | Customer Reviews | 3.4 3.4 out of 5 stars (7) | | Input Voltage | 16 Volts | | Item Dimensions D x W x H | 5.8D x 23.6W x 13.1H centimeters | | Item Highlight | Renogy REGO 40A DC-DC MPPT Battery Charger 12V, Dual Input Solar/Alternator | | Manufacturer | RENOGY | | Number of Items | 1 | | Output Voltage | 12 Volts (DC) | | Specification Met | UL, CE, FCC | | Unit Count | 1 Count | ## Product Details - **Brand:** RENOGY REGO - **Colour:** Black - **Output voltage:** 12 Volts (DC) - **Product dimensions:** 5.8D x 23.6W x 13.1H centimeters - **Specification met:** UL, CE, FCC ## Images ![Renogy REGO 40A DC-DC MPPT Battery Charger 12V, Dual Input Solar/Alternator - Image 1](https://m.media-amazon.com/images/I/61YHHKvMD2L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What type of alternator is this DC to DC on board battery charger compatible with?** A: Works with both alternators. But smart alternators vary voltage, so you MUST connect the charger's IGN (ACC) cable to the Vehicle Ignition Port for them to work properly. **Q: What types of battery does the charger support?** A: It's suitable for 12V Lithium, Gel, AGM, and Calcium batteries. This charger enables the batteries to reach a full 100% charge. Additionally, it has the capability to revive lithium batteries that have become discharged to a low voltage. **Q: How do l set the battery since there is no display screen?** A: To change the battery type, press and hold the SELECT button on the side of the battery charger. The LED lights corresponding to each battery type will illuminate in sequence, indicating the available options. **Q: If both solar power and the engine are available, can we prioritize using solar power to charge the battery?** A: Our product defaults to DC charging. To prioritize solar charging, simply press the SELECT button on the side. **Q: Can solar charging and DC charging be switched automatically?** A: Charging automatically switches to solar when 1. Generator ON: DC <11.3V & Solar >13V 2. Generator OFF: DC <12.7V & Solar >13V --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/766108624-renogy-rego-40a-dc-dc-mppt-battery-charger-12v-dual](https://www.desertcart.co.za/products/766108624-renogy-rego-40a-dc-dc-mppt-battery-charger-12v-dual) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-10-31*