YONHAN Battery Charger 0-20A 12V/24V LiFePO4 Lead Acid Fully Automatic Battery Maintainer, Car Battery Trickle Charger Automotive w/Battery Repair, Winter Mode, for AGM, STD, Gel, Deep Cycle Batteries

This battery charger is amazing and reasonably priced. I have two deep cycle batteries that apparently went dormant due to lack of use, in my own opinion. I charged both batteries with a regular battery charger for hours, battery charger would indicate batteries fully charged. I installed a battery in a dump trailer, and it failed to lift or extend hydraulic cylinder, pump would only work for a short period without raising the dump bed. I received this amazing battery charger and put the battery on repair for approximately 16hours or less, then proceeded to charge the battery.Battery is functioning normally and now using the dump trailer without a problem. I highly recommend this charger, saved me hundreds of dollars in replacement cost of batteries.

This product did not disappoint at all. It was an absolute life saver when my car battery unexpectedly died. Within just 15-20 minutes, it had my battery fully charged and ready to go. Super easy to use, compact, and incredibly effective. The cord is not super long, but that wasn't an issue since I planned on using an extension cord anyways! I highly recommend keeping on of these on hand - especially during the summer months or for emergencies. Totally worth it!

I purchased this charger for my first time purchase of a LiFePO4 battery. The description states to charge LiFePO4 battery. Being new to this type battery, I was unaware that there are lead acid. My new battery requires a 14.6 v charger, this charger is not a 14.6v charger so I had to return it. They may want to state this in the description to help out us novices. But this charger is fine with the right application.

It does rhe jop

Well, this unit will charge your battery. It actually does much much more. Deposits buildup on the plates in your battery. This unit will clean those deposits off in a maximum of four hours. Then will test your battery and let you know its condition. This unit saved me from buying a new battery. if I left the car sit three or four days the battery will be dead and the car would not start.After cleaning the plates in it saved my battery and now I can let my car sit for several weeks and it still starts great. This unit has more than paid for itself in savings.

This unit did exactly what I expected. The battery was less than a year old and was totally drained from a vampire draw over the cold season to the point that it would not take a charge and showed a bad battery.I put it in the repair mode overnight and then put it on charge and the battery completely charged and worked just fine. I have since installed a battery keeper to avoid a reoccurrence of the same problem. The $50 unit was a good investment and much cheaper than purchasing a new battery.I highly recommend this unit.

Tops off a solar bank with a generator when needed. I charge up a bank of 4 100AH and 2 200AH batteries with my Honda 2200 generator on cloudy days and at night when needed for work. You have to disconnect it when not in use, or it will stay powered up from the batteries.

24 volt Led battery function works well, Single 12V battery LED acid, works with specified safe electrical specifications. LifePo4 not so much, this is dangerous as it used it in 24V mode and it charged it to 37 Volts, tried it again and it charged it to 31Volts. The 37V is way too high for these 600 volt batteries or any kind of battery and a safety concern, I am going to let the seller let me know why this is happening but as far as I know, the tolerance is violated for these kinds of batteries. abusing these big expensive batteries will shorten the life of the battery. Tried to get hired by Amazon as electrical engineer but I am always denied, I see the kind of products they should test thoroughly and qualify before someone blows up their home and this is what I get. when it matters. The spec says. The maximum charge specifications for LiFePO4 (LFP) batteries typically include:Nominal Voltage: 12.8V for 12V batteries and 25.6V for 24V batteries1.Maximum Charge Voltage: Generally around 14.6V for 12V batteries and 33.2V for 24V batteries1.Discharge Cut-off Voltage: Approximately 2.0V for both 12V and 24V batteries1.Charge Efficiency: LFP batteries can charge at nearly 100% efficiency, making them suitable for various applications. 31Volts is still but I witness 37V.