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The RENOGY 12V 40A DC-DC Battery Charger is a rugged, smart charger designed for RVs, marine, trucks, and off-grid setups. It supports multiple battery types including LiFePO4 with intelligent activation, features built-in alternator running detection to protect starter batteries, and offers advanced electronic protections. Its compact wall-mount design is IP32 waterproof and arctic-ready, while optional Bluetooth connectivity enables remote monitoring and control. Trusted by professionals in extreme environments, it ensures reliable, efficient charging in all weather conditions.
| ASIN | B0FBGF7TYH |
| Best Sellers Rank | #147,184 in Automotive ( See Top 100 in Automotive ) #556 in Battery Chargers |
| Customer Reviews | 4.2 4.2 out of 5 stars (8) |
| Date First Available | July 2, 2025 |
| Item Weight | 3.85 pounds |
| Item model number | 40A Fast Charge |
| Manufacturer | RENOGY Rego |
| Product Dimensions | 2.3 x 9.31 x 5.17 inches |
T**A
Good
Does itโs job
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.
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.
Trustpilot
2 weeks ago
2 weeks ago