KONNWEI KW510 12V 5-Amp Smart Charger with Car Battery Tester - 3 in 1 Automotive Pulse Repair Maintainer, Trickle Charger Battery Desulfator with Temperature Compensation Review

This item is amazing and easy to use on many levels. I haven't used the battery repair feature yet, but I'm sure it will be as easy as the charge and recharge features. I especially like the internal fan that cools the charger when it's running for a long time. The test functions are also very quick to determine what might be wrong with your battery if you have a problem. The size of the device is true to size, not too big, easy to handle. The handles on the terminal are solid and don't pop out

Great tool. As with any tool, you need to know how to use it properly. I say this because many people post bad reviews without knowing how to use the tool properly. I have other chargers and diagnostic equipment because I work with cars and trucks all the time. In my opinion, everyone who works with cars should have one of these. It's packed with features, and the display and menus are easy to read and understand. I just bought it a few days ago and it has been used 24/7. It tests the…

I needed a quality battery tester and charger while working on the charging system on my 1961 Ford Falcon replacing the 5.0 liter V8 engine. This device was perfect for my needs. The test function is great as you can unplug the power cord and just plug the device into the battery to test. The tester is battery powered, so no external power supply is required. It quickly determines the battery status. I had an older Optima in my car and wasn't sure if that was part of the problem, but the…

I bought a Konnwei 5 amp charger/analyzer because of the features, price and good reviews. The item I received did not work when it arrived - the analyzer worked but the charger did not work. I contacted the support team who responded within 24 hours and asked me to shoot several videos of the malfunction. After I submitted the video they sent me a replacement charger - I didn't have to ask, they were active. The replacement charger/analyzer is working properly. I'm glad the seller stands…

Bought to repair a car battery. It's really easy to use, just make sure you follow the instructions completely. Be sure to remove the battery from the vehicle before using the repair function! Before you remove your car battery, make sure you have a good memory saver. I bought one from Revain where you can wire it to the wall as the repair process can take a long time. It worked for me after the battery was disconnected for over 11 hours. When removing a car battery, first remove the negative…

****UPDATE*** This charger has already saved me about $45. My lawnmower tractor battery was completely dead and after checking/testing it was recommended to be replaced due to a bad cell. Then I kept myself that I bought Konnwei that was in the trunk of my car. To my surprise, this little device fixed the failed battery and charged the battery in less than 5 hours. It has already paid off! and the tractor starts immediately. THANKS AGAIN. Needed an AGM charger/maintainer as my old charger only…