YONHAN Battery Charger 0-20A 12V 24V LiFePO4 Lead Acid Portable Car Battery Charger 8-Stage Trickle Charger Smart Battery Maintainer w/Temp Compensation for Car Truck Motorcycle Lawn Mower

I was very impressed with this battery charger. I have a car that I had to jump start every time I came home. I thought I would have to buynew battery to solve the problem. I drive a truck for a living, so I am only home every 2 or 3 weeks.I used this charger on my car only one time, and it fully charged my battery in about 30 minutes. I then went back on the road. When I came back, I thought I would have to jump start my car again. But there was no need. My car started perfectly without any need to jump start it.

We live on a farm with 3 cars(2 of which are Subarus, so you know I recharge a lot of batteries), a truck, several tractors, and a couple of machines that have electrical starters. This charger has a feature to repair batteries and I can tell you that it works. We had several batteries that were not being charged by an old charger we had, and the charger finally failed. Being a horrible packrat, I had the car batteries on a shelf. After saving both Subaru batteries from sitting for 5 months, I was able to save some of the shelved batteries using this charger, too. Buy it, you'll be happy you did.

My old charger had died and it was time for a new battery charger. This product is great. Perfect size so it doesn’t take up hardly any space on a shelf in the garage. The display screen was user friendly and easy to view the charging status. Very nice charger for the price and I would recommend it to anyone looking for a new battery charger.

Okay, I manage to break car battery chargers. Like I had a Schumacher standing cart charger. I knocked it over and it stopped working. I considered getting a 30 amp unit, but I wanted something today, and Amazon could deliver this one today. The Schumacher was supposed to charge up to 40 amps, but this 20 amp charger actually seems to actually charge faster.I was a little confused because in the first few minutes of charging, it only said around 2 amps. But I checked on it occasionally and the amps increased over time. I never saw it show more than 15 amps, never 20 amps. I was charging an AGM battery if that means anything. But it fully charged it in around 6 hours starting from near dead. So I'm happy so far.The display is large, but hard to read in sunlight. And the charging modes are not clear just from the display, you need to look at the manual (okay, 1 page document) to understand the charging modes. But these are fairly minor quibbles. Very compact and seemed to work fine. But I'll probably kill it in not too long...

Excellent

I bought this in December of 2024. It lasted about 5 months and now will not work at all. It will not charge my battery or switch between modes. I guess you get what you pay for. Probably why there is only a 30 day warranty on it.Update 5.22.25There customer support site is about as worthless as this charger. I have filled out their contact form 3 times and have never received any responses. I guess I threw the $50.00 out the window. I would avoid purchase of this charger.

Arrived in a timely manner with no damages. Nice and compact, works excellent, I charged two car batteries that were completely drained for about a year with no problem. Very Satisfied with this product!!!

Used once, and seems great. However, I had to go online and look for YouTube videos on how to use the item since the info in the very short instruction guide is inadequate for a first-time user. Also, I connected the charger red and then black, but did see a sizable spark which can be dangerous. (It's my understanding this is the correct order.) Instruction info does not specific how to use charger in terms of red, black connecting order, etc. Can't find any way to contact the seller either email or phone. Would receive a 5 star review if didn't generate spark on first time use.