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Renogy 12V 20A/40A DC to DC Battery Charger, Using Multi-Stage Charging in RVs, Commercial Vehicles, Boats, Yachts : desertcart.ae: Books Review: The first one of these I ordered was a used item on desertcart, I bought with full confidence but I didn't get the chance to install it until after the return window closed, so this review is mostly to let the seller know that the used unit was defective and I got screwed. The button on the front which is supposed to change the battery type did not work, all the lights just blink and the battery type doesn't change. Had to order a replacement brand new unit and it works fine. My bad, but sometimes you just can't install something until after the return window. Review: Charger is solid and works great. However, the Bluetooth unit is extremely cheap and came out of the box inoperable. I spent 3 weeks with Renogy trying to resolve it - sending photos and videos demonstrating that it was broken. They refused to honor the warranty, and I had to purchase a separate Bluetooth device from desertcart.
| Customer reviews | 3.9 3.9 out of 5 stars (43) |
R**H
The first one of these I ordered was a used item on Amazon, I bought with full confidence but I didn't get the chance to install it until after the return window closed, so this review is mostly to let the seller know that the used unit was defective and I got screwed. The button on the front which is supposed to change the battery type did not work, all the lights just blink and the battery type doesn't change. Had to order a replacement brand new unit and it works fine. My bad, but sometimes you just can't install something until after the return window.
S**.
Charger is solid and works great. However, the Bluetooth unit is extremely cheap and came out of the box inoperable. I spent 3 weeks with Renogy trying to resolve it - sending photos and videos demonstrating that it was broken. They refused to honor the warranty, and I had to purchase a separate Bluetooth device from Amazon.
D**S
Kept my bank1 lead acid and bank 2 lithium ion batteries at peak charge all boating season. You need to know that the terminals have shoulder tunnels that are narrower than most battery cable ends. I had to cut down the width of a couple of cable ends.
N**N
One of the features that I bought this for was its automatic detection of when the alternator is running. It -does- start charging when the voltage goes up as the alternator starts producing, but when the engine is shut down the charging continues. The manual states that charging will stop when the source voltage is less than 12.7v. I monitored charging down to 12.3 volts before manually disconnecting. When I reached out to the support line I was advised that this was a known issue and I should install a switch. I did buy a switch but so much for automatic detection. If I forget to turn off the switch, will it completely drain the truck batteries to charge the RV house batteries? Hopefully I don't find out.
M**E
Installed in my van to charge my Temgot 460ah battery off the alternator/battery. Easy to install, easy to set for your battery type. Lights stay on so a small draw but not significant. I got the 40amp version and it's great for my use. Went on an advanture with it on washboard roads for 3 hours- still performs like a champ.
Trustpilot
2 weeks ago
2 months ago