NEXPEAK NC215 15-Amp Battery Charger, 12V 24V LiFePO4 Lead Acid Portable Car Battery Charger 9-Stage Trickle Charger Smart Battery Maintainer w/Temp Compensation for Car Truck Lawn Mower Boat Marine

So, I don't really know how this works, so this isn't that kind of review. I got a jump start from a "professional" through my insurance's roadside assistance. My engine did run after that, but my check engine light was suddenly on, and power steering didn't work. It didn't feel safe to drive around like that, so I parked and shut the engine off. It wouldn't start up again. It was a toss-up for me at that point between getting it towed to a mechanic or trying this. It tried this. I started on standard repair mode, but it said the battery was fully charged. I figured I already had it and might as well try the "repair" mode. I don't know how long that ran because I went to sleep after it had been running for 8 hours. The books says it usually runs for 4 hours. In any case, in the morning, it was done. With little hope, I packed it back up and got in my car. Everything was perfect. Completely perfect. No check engine light. No problems with the steering. No problems with anything. I couldn't be happier with this little thing. The cords on both sides are shorter than a trickle charger I used before, so be prepared to leave this one under the hood if you're going against the recommendationg and charging in situ--it's not going to reach to a table or the ground. If I had known that, I would probably have looked for another one--but I am so glad I didn't. Really pleased with this purchase.

I purchased this battery charger to help maintain the AGM batteries I have in a Mazda CX-3, Kia Forte GT Line, and a Toyota Corolla. Despite it's size, it's lightweight, with a clear screen. The heat level of the charger is controlled by an exhaust fan at one end of the unit. The unit does come with a little instruction manual, but it's pretty straightforward to use. It is recommended to completely disconnect the battery from you vehicle before charging. You simply attach the red, positive clamp to the positive terminal on the battery and the black, negative clamp to the negative terminal of the battery, select the operational mode by pressing the "mode" button and plugging the device into an AC outlet. A nice feature of this charger is it has a trickle charge function to maintain your battery. The power cord length is approximately 55 inches.The unit was able to recover/restore a 3 year old battery after 2 repair sessions and currently still working in the Forte. Prior to the repair function being used, the battery would loose it's charge overnight. Extremely pleased with this purchase.

I have various batteries that I use for amateur radio field use. Some sealed lead acid (SLA) like automobile batteries and several LiFePO4 batteries. This charger auto-detects the type of battery and runs a charging cycle. The fan runs while the battery is charging and it isn't especially quiet so I tend to connect it overnight in the garage or a different part of the house.

Works great! Really like that is shows me voltage and current readings :-)My only complaint is how noisy the fan is. I intend to use this in my bedroom for my cpap battery.Good news, the fan does shut off once it goes into FUL mode.

Sure did bring a battery back to being functional. It takes a bit of time - but it works. I have 5 vehicles - some times a battery or two is not used enough to keep it is good shape. This handy dandy device steps in to bring the battery back to life. I recommend it to you;l

On sale or about $23 was a great buy. Love it’s information screen with amp output, volts, temperature and state of charge bar. Love it’s capability of charging 12 or 24 volt setup as I have both. Lithium and Flooded both.This lets me top off batteries in my 2 solar systems when I want. Great purchase

Works great for both my lithium and lead acid batteries. Small size is a plus. Doesnt get too warm during charging.

keeps charge and charge small gadgets good to have in a power outage