GOOLOO S4 4Amp 6V/2A & 12V/4A Battery Charger,SuperSafe Smart Electric Automotive Maintainer Trickle Charger Pack for Car Vehicle

Works great,charge last a long time. Has multiple uses.

Bought this to replace a smaller charger I use to maintain an AGM battery for our water pumps in our food truck. LIke the digital display and the ability to change the battery type as needed. So far it is functioning perfectly and it indicates when the battery fully charged. Like it so far.

My truck's battery was so dead I didn't even get a flicker from the dome light. I tried the first couple of modes and got an error message, then finally the last mode got me a partial charge. After that I put it back on standard mode and got a full charge. This process took a few days, but now my truck starts from it's own battery. I keep the charger connected now so it will start again next time I want it to.

I bought two charges one for myself and my neighbor This was perfect for keeping my battery fully charged we are both very happy with the digital charger's I was expecting cheap plastic but I was very pleased it's very nice and well made. Love the digital readout it's easy to see.

I purchased this item because the battery to my car went down and I asked someone to help me and he actually used this item and it worked perfectly.

I purchased three of these and all are working great.

I have a storm shelter with several lights powered by 12v battery, in case power is lost during storm. Besides trickle charging, I also needed the charger to have enough power to keep battery charged even if lights are being used. My previous 1.5 amp charger could not keep up. This 4 amp charger works great.

Needed a charger to use on my F150 since it doesn't get driven as often now and I had the battery getting low sitting idle. This charger is easy to use and install. It provides all the needs I have. The battery has a trickle charge to keep it charged.

So far, it has performed exactly as what it is supposed to do. Give me 4 amp max charging power and adjust the amps as it progresses on the charging stages. It also maintains the battery at a float voltage (around 13.4 volts, but I do not remember the number.) If I have to complain, I wish the cable with the eyelets is a little longer as my battery is in the trunk underneath the cover and the cable was found to be somewhat short for it.

I had difficulty hooking it up. It initially indicated I had a bad car battery. The battery turned out to be fine. Very little documentation.