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⚡ Power up your off-grid lifestyle with smart, fast, and safe charging!
The Renogy REGO 12V 40A DC-DC Battery Charger is a robust, alternator-powered charger designed for auxiliary batteries in RVs, boats, and vans. It features a 4-stage smart charging algorithm compatible with lithium, AGM, and GEL batteries, built-in alternator detection to protect starter batteries, and advanced electronic protections. Its compact, corrosion-resistant design suits harsh environments, while optional Bluetooth monitoring offers real-time control and data logging. Ideal for professionals and adventurers seeking reliable, efficient battery management on the go.
| ASIN | B0FBGF7TYH |
| Amperage | 40 A |
| Best Sellers Rank | #155,155 in Automotive ( See Top 100 in Automotive ) #613 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 |
| 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 |
G**Y
Battery charger
Charge lithium house batteries with alternator.
W**S
Avoid buying
Charger only runs for 5 minutes when you first turn the vehicle on then stops charging until you restart the vehicle. Renogy cs says it’s because I don’t have Renogy batteries. Do yourself a favor and steer clear of Renogy. Victron is miles better for the same price.
T**A
Good
Does it’s job
A**T
Worked only once
It worked one time. Shows it’s connected but doesn’t charger aux batteries.
J**R
Package missing important wire
Can I give it zero stars? Let me give this Renogy DC - DC Battery Charger zero stars, please. I wasted plenty of money on this charger, which was stated to include IGN Signal Wire, but which did NOT include the wire and I absolutely need it for my smart alternator. I didn't have a chance to work on install until after the product return window was closed so I didn't realize I had gotten a raw deal until too late, and I have no recourse. I have searched for aftermarket or accessory IGN wires but they don't seem to exist, even from Renogy. Due to the package NOT containing all of the items it was supposed to, this product is 100% unusable and a total financial loss.
M**E
Game changer
Game changer. I have two 100amp batteries that I thought I was getting a good charge and management out of what I had. I learned quickly that this is a necessity.
F**Y
Didn't last.
Didn't work for me lasted about 33days just pass the return window.
Trustpilot
1 day ago
2 days ago