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๐ Power up smartly, charge confidently โ your dual-battery game changer!
The Renogy 12V 20A/40A DC to DC Battery Charger is a next-gen onboard charger designed for RVs, boats, and commercial vehicles. It features intelligent multi-stage charging with up to 94% efficiency, Bluetooth-enabled remote control and monitoring, and comprehensive electronic protections to safeguard your batteries and vehicle electrical system. Its compact, wall-mounted design simplifies installation, while customizable lithium battery activation ensures optimal performance tailored to your setup.
| Customer reviews | 3.9 3.9 out of 5 stars (64) |
L**A
Publicaciรณn o contenido no correcto de publicaciones
No incluye conexiรณn o adaptador bluetooh como dice en la publicaciรณn para nada lo volverรญa a comprar muy engaรฑosa la publicaciรณn
D**N
Solid Charger, Easy Setup, Perfect for Dual Battery Builds!
Installed this Renogy DC to DC charger in my Cadillac for my AGM to lithium audio setup, and so far Iโm very impressed. The unit feels solid, well built, and the wiring instructions were straightforward once I laid everything out. Installation took some planning, but the charger itself worked exactly as expected. Itโs charging my auxiliary battery properly and gives me peace of mind knowing my audio system has clean, controlled charging without stressing my factory electrical system. I also like the safety features and the quality of the terminals and connections. If youโre building a dual battery setup for car audio, overlanding, or auxiliary power, I definitely recommend this unit.
M**N
Good buy
Paired with 5000 watt vevor inverter, defume 600ah battery, works flawlessly.
E**N
Do Not Buy โ Defective Unit, Turns On By Itself
This Renogy 40A DC-DC charger is poorly made. I installed it with a proper switched ignition signal on the IGN terminal, but the unit completely ignored it. It turned on immediately as soon as I connected power, even with the IGN wire completely disconnected. It has no respect for the remote turn-on signal and powers itself on with no input. This is a serious design flaw or quality control issue. I had to return it because it would have drained my main battery or caused other problems. Save your money and buy something better. This thing is cheap for a reason.
D**A
Easy install, flawless operation
I bought another brand's DC to DC charger and purchased the Renogy one after the other brand did not function correctly. I am so glad I did instead of trying to mess with it. The installation was super easy (as it should be), and I only had to push the button a few times to tell the unit I had Lithium Phosphate batteries, and everything worked. I have also confirmed that the unit is charging my battery bank with a multimeter and visually on my battery monitor. Get this one if you are on the fence; I recommend it over trying to save money on a lesser-known brand.
Trustpilot
1 week ago
1 day ago