WAVLINK 280W Smart Battery Charger, Max. 20A Trickle Charger with LCD Display, for 6V/12V/24V Lead-Acid/Lithium/LiFePO4 Batteries, Battery Maintainer and Desulfurizer for Cars,Boats, Motorcycles

It’s exceeded expectations. It keeps my battery for my diesel heater charged and the maintain is perfect. It charges dead batteries and fixes bad ones to have them work again after they have been dead for over a year. Great price. And don’t make any noise. Easy to use and quick to charge. Senses full charge and turns off. Or goes to maintenance mode.

Seems to work well, but needs better instructions on mode use. I bought this to charge new Lifepo4 batteries and could not get it to start charging the newly purchased batteries as they are shipped in a discharged state and BMS is off. Doing some research I found a hack to trick the charger into starting by jumping the Lifepo4 bat to a charged 12 v battery of any kind. The full voltage will trick the charger to start and ot did work. I have since read in othe reviews here to change the battery mode on the charger to flooded so you can access the "force" mode of the charger. This mode is not available in Lifepo4 mode. I did not try that so I can not confirm, but others have said it works. That would have been easier than jumping to my car. Not sure why the force mode is disabbled in Lifepo4. You do have to switch the battery type back to Lifepo4 after a few minutes running in the force mode. Now that the bms is awake and battery charged the charger has no problem working and for only 20 amps and a really good price on sale for under $50 its hard to beat.

My initial impression is that this is an excellent battery charger. As soon as I took this out of the box I started charging batteries. I have several project cars and they had weak or dead batteries, this Wavlink charger easily charged all of them, including an AGM battery and two 6V and a 12V lead acid batteries without issue. It is surprisingly quiet, charges quickly has easy to understand controls and the display is bright and easily legible. Build quality seems very good upon my first use of the product. Overall I'm really pleased with this charger.

Seems to work well. Would like to see some type of light to indicate when when fully charged as the screen is difficult to read unless your looking straight down at it. Needs more illumination I feel.. Wiring a little light to do any serious desulfation. That being said, it has some nice features and works well enough that I will be keeping it. Will do update (if needed) after use awhile.

Works dang well

works great

Great little charger. I have been using to charge LiFoPo4 batteries and then doing a capacity check on them down to BMS cutoff. The thing I didn't realize is the force button on this doesn't work when it is in LiFePo4 mode and when the lithium battery is cutoff and waiting for a charge, the lithium mode won't charge. Simple solution is to put in lead acid mode and then use the force to get the LiFePo4 battery started. I normally leave it in force mode for about 30 seconds or long enough to then switch back to the LiFePo4 mode and then it will charge fine. If the battery isn't depleted to cutoff this wouldn't be an issue. I bought this for the features but especially for the force mode and it works if selecting the lead acid battery type. Not sure if this was by design, but there is a use case for force mode even when trying to charge LiFePo4 batteries.

This thing saved me at least 800 by not having to but another p04 battery that woke it up from a deep sleep over the winter by using the force mode asnwell as bringing back to life a led acid battery. Nice.....very nice!!!!!!