Amazon.sg:Customer reviews: Renogy 12V 20A DC to DC On-Board Battery Charger for Flooded, Gel, AGM, and Lithium, Using Multi-Stage Charging in RVs, Commercial Vehicles, Boats, Yachts, 20A

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425 total ratings, 80 with reviews

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Markov

Works well wired to 24v to 12v converter

Reviewed in Canada on 27 July 2021

Size Name: 20AVerified Purchase

I use this in my overlanding setup. I have a 24v system in my Toyota landcruiser and I needed somthing to connect from my 24v to 12v converter to charge an auxiliary battery.

In my situation, my alternator puts out 24v, that will fry this thing. So! I wired it to the output of my converter (12v out).

I asked the question before buying this and everyone said 'no it won't work'. I bought it anyway cuz my options were limited. Well, it works. My aux battery has been staying charged while I drive and my fridge freezer has been staying cold. Mission accomplished.

One person found this helpful

serge melancon

Greater expectations from renogy!

Reviewed in Canada on 8 September 2021

Size Name: 20AVerified Purchase

Had it connected for 7 months and now it's giving me a fault so not able to charge my lithium batteries using the engine... that was not worth it for such a short period... unless you can do something about it 😏

3 people found this helpful

Rob

Lithium settings don't work and no customer service

Reviewed in Canada on 28 February 2022

Size Name: 20AVerified Purchase

I used it on a SLA battery for a few months without issue. When I upgraded to a LiFEPO4 battery, I found that the dip switches don't do anything. With S5 OFF to set lithium mode (per the manual) it seems to only want to charge to a final voltage of 13.4V and no combination of switches S1 through S4 make any difference to this. So, now I have a 20A charger than only wants to put out 3A to a 100aH LiFePO4 battery that is only at a 60% SOC. My LiFePO4 battery requires a 14.6V charge. Customer service has not responded to e-mails as of yet.

*Edit* A tentative 3 star review. Customer service did respond with the proper switch settings and it did give 19amps at 13.6V. I must cycle the battery again while connected to an alternator to see if this solves the issue entirely and it cuts off at the required 14.6V. I still can't explain why the same switch setting only gave 3 amps when I randomly tried every possible setting.

Gary Mueller

I have come to dislike all Renogy products

Reviewed in Canada on 3 July 2022

Size Name: 20AVerified Purchase

I have installed an entire Renogy system into my Campervan. Before buying the system I looked at reviews and dismissed some of the complaints. Just like clockwork, the warranty expires and I start experiencing the failing equipment. Customer support is responsive, but offers no solutions other than "check the voltages with a meter".

Ron Howard

Charges well

Reviewed in Canada on 24 August 2020

Size Name: 20AVerified Purchase

Better than what I had when the vehicle wiring only slightly charged my trailer batteries.. now I get a full charge after a short drive and don’t need to purchase a generator for boondocking.

One person found this helpful

Asherah

Quality product, easy to install

Reviewed in Canada on 27 February 2021

Size Name: 20AVerified Purchase

After recently upgrading our house batteries, and doing much reading. Charging our batteries while we drive with this unit has been great. Since a alternator only gets a battery to maybe 80% this brings them right up with out added stress . Installation was very easy.

John

Works as advertised

Reviewed in Canada on 12 October 2021

Size Name: 20AVerified Purchase

Installed this charger as I wanted to run my RV fridge on 120v instead of propane while travelling down the road.

So my truck’s alternator provides power to this charger who in turn charges the RV batteries. Then I have installed a 1000 watt inverter to provide 120v to the fridge. Runs like a charm I can now turn off the propane while on the road

Amazon Customer

Failed in 10 days

Reviewed in Canada on 24 November 2021

Size Name: 20AVerified Purchase

This failed after 10 days. Waste of time installing it, and then removing it.

One person found this helpful

Amazon Customer

Very satisfied

Reviewed in Canada on 1 November 2020

Size Name: 20AVerified Purchase

Works perfectly well. People are complaining about the manual but I found it very easy to use.

Askaquestion

Works fine !

Reviewed in Canada on 2 November 2021

Size Name: 20AVerified Purchase

Use on my Westfalia to charge my auxiliary lithium battery. Provide 20 amps as measured. Easy to install. Carefull with the Dip switch position.

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Renogy 12V 20A DC to DC On-Board Battery Charger for Flooded, Gel,... › Customer reviews

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Renogy 12V 20A DC to DC On-Board Battery Charger for Flooded, Gel, AGM, and Lithium, Using Multi-Stage Charging in RVs, Commercial Vehicles, Boats, Yachts, 20A

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