VEVOR 12V 40A DC to DC Battery Charger, 500W, On-Board Battery Charger for Lead-Acid, Lithium, AGM, Gel, and Flooded Batteries, Smart Multi-Stage Charging, for RVs, Commercial Vehicles, Boats, Yachts

Easy install, seems to do the job well. Made for a much easier trip when facing long travel days that otherwise would be draining the camper house battery bank.

Keeps lithium deep cycle battery from overheating vehicle alternator.

Prods - built strong, works good also Cons - terminals for power cables too small - impossible to use standard cable terminals. Need to grind every terminal from both sides to fit then in narrow spaces. Moreover power connections should be rotated on 90 degrees because it’s difficult to connect to power terminals. Would return products and newer buy VEVOR dc to dc because it’s has terrible power terminals. I love VEVOR products, but this charger must be modified. Attached photos of example good terminals other dc charger.

Good

Why did you pick this product vs others?: WORKS great in my dump trailer. Needs to be tweaked as per instructions. Charges battery fast in between dumps.

0 stars. Charge current never exceeded 8 amps, LC activated only output 4 amps. Useless charger.

Easy to install. Works well so far

It wouldn't turn on at all checked all connections made sure 12 volts was going to the right places. Had to disconnect it and jump over it during my two week trip

Fonctionne parfaitement et charge nickel juste sue l'installation sur la notice est mal indiquée

Funktioniert bestens. Ich habe 400Ah an Batterien drin, die werden jetzt wesentlich schneller geladen. Natürlich sollte die Lichtmaschine genügend Leistung abgeben. Die D+ Leitung ist zwingend notwendig und der gesamte Leitungsquerschnitt sollte nicht unterdimensioniert sein.

Prodotto molto buono un po piccoli gli attacchi dei cavi batteria

It is not bad, It charges in the first stage rate "Bulk Charge" up to a point and then stops. It does not go into second stage charging "Absorption Charge" to complete the charging to 100%. The connection points are not rated for 40 amps or #6 AWG Wire. It would be nice if the D+ connection point was built for a spade wire connector. I wish some of the other manufacturer's built their DC to DC chargers this sturdy.

Problema con il prodotto. Ma il venditore gentilissimo ha risolto il problema, le 5 stelle vanno al venditore ditta molto seria e disponiile