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⚡ Power up your off-grid lifestyle with smart, speedy charging!
The Renogy REGO 12V 40A DC-DC Battery Charger is a robust, alternator-powered charger designed for RVs, boats, and vans with auxiliary batteries. It features a smart 4-stage charging algorithm compatible with AGM, GEL, and Lithium batteries, built-in alternator detection to protect starter batteries, and advanced electronic safeguards. Its compact, corrosion-resistant wall-mount design suits harsh environments, while optional Bluetooth monitoring via the BT-2 module offers real-time control and data logging. Ideal for professionals and adventurers demanding reliable, efficient battery management on the go.


































| ASIN | B0FBGF7TYH |
| Amperage | 40 A |
| Best Sellers Rank | #175,166 in Automotive ( See Top 100 in Automotive ) #679 in Battery Chargers |
| Brand | RENOGY REGO |
| Color | Black |
| Compatible Devices | AGM, GEL, Lithium, Remote Monitoring Devices (RJ485, Bluetooth) |
| Connector Type Used on Cable | RJ485, Bluetooth (BT-2) |
| Current Rating | 40 A |
| Customer Reviews | 3.5 out of 5 stars 16 Reviews |
| Input Voltage | 16 volts |
| Item Dimensions D x W x H | 2.3"D x 9.31"W x 5.17"H |
| Item Highlight | Renogy REGO 12V 40A DC-DC Battery Charger Multi-Stage for Lithium/AGM/Gel |
| Manufacturer | RENOGY Rego |
| Mfr Part Number | RBC40D1U |
| Model Number | 40A Fast Charge |
| Number of Items | 1 |
| Number of Packs | 1 |
| Output Voltage | 12 volts_of_direct_current |
| Product Dimensions | 2.3"D x 9.31"W x 5.17"H |
| Specification Met | UL |
| Unit Count | 1 Count |
| Warranty Description | 2-year material and workmanship warranty |
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