20-Amp Smart Battery Charger,Lithium,LiFePO4,Lead-Acid(AGM/Gel/SLA..) Car Battery Charger,Trickle Charger, Maintainer/deep Cycle Charger,12V/20A and 24V/10A,for Boat,Motorcycle,Lawn Mower,Golf cart..

I was looking for a 24v charger for a lithium battery I bought. This charger works perfectly! It charges quickly, has helpful LED indicators, and includes safety features to prevent overcharging. The build quality is solid, and it’s easy to use. Highly recommend for anyone needing a reliable 24V battery charger! Also will do 12v batteries.

20-Amp Smart Battery Charger,Lithium,LiFePO4,Lead-Acid(AGM/Gel/SLA..) Car Battery Charger,Trickle Charger, Maintainer/deep Cycle Charger,12V/20A and 24V/10AI bought two of these from Amazon to charge up my LiFePO4 batteries for my off grid cabin setup at 9000’ in the Colorado Rockies. They work amazing – charging those to somewhere around 14.4-14.8 volts automatically. Not only did they charge my LiFePO4 batteries, they also revived my deep cycle L-16 batteries that the LiFEPO4 batteries replaced. The L-16 were the standard for solar a few years ago, and my L-16’s are about 6 years old on their last legs, needing constant monitoring, gassing off of acid, and needing to be refilled with ever scarce (during the pandemic) distilled water. The charger revived 3 of what I thought were dead L-16’s (and topped off the other 5). I’m now going to move those down to my garage to use in another solar application that’s not so critical (cabin itself is critical for furnace heating on propane when we’re not there, therefore the swap out to LiFePO4’s from L-16’s). The charger itself: display is very bright, buttons are well made, it remembers which battery type you last charged although very easy to set that, you can select the amps for charging which is great for low amp charging of ATV or Snowmobile AGM smaller batteries. Last weekend I had to move my LiFePO4 batteries inside due to severe freezing conditions and used the two chargers to top them off and make their voltage reasonably close to the other LiFePO4 batteries in the system before placing them back on the solar/gen-charger system. Worked perfectly. Also, since my main system is 24v, I can hook the charger up to the main battery bank on the main pos/neg to charge the whole system if needed. The chargers also have that recovery mode for Deep Cycle Lead Acid batteries, and that also works for normal car/truck starting batteries as well. Recovery mode on mine took about a day for it to cycle the lead acid cells – you can see/hear the acid bubbling when it does it and need to keep eye on acid/water level every so often as it recharges them, like I said I though they were deader than a door nail and they are now revived. I’ve looked at other multi-battery-type chargers, and these chargers fit the bill for my dozens of batteries and currently 4 different battery types – LiFePO4, deep cycle, starting, and AGMs – the mode button allows you to select which battery type for the proper charging voltage and cycle. I’ll probably buy a few more for use at my main house in the city.

This HTRC 20 charger is excellent and works really well. As a clarification, if you do a web search, it will mention the HTRC chargers that were catching on fire before summer 2024. This is not the same one and actually was produced after that defective charger was taken off the market. In addition to having various overheating protection safeguards, the highest temperature mine ever get is 80 degrees F and that is when they first start and within less than a minute they will go down to and run at approximately 72 degrees. I do live in a relatively cool area near the ocean in central California, so that may also contribute to the lower temperatures that my chargers keep. ( l also use them in my cement based garage) If the charger won't kick in when you plug it in, it may be that your LifePO4 battery has been overcharged and is asleep. If so, get an adaptive energy power supply device to wake it up. I own two of these HTRC chargers and I use them to charge each battery individually to full so they will stay balanced. (I am completely unable to use or figure out a multimeter so this works better for me and it clearly lists its voltage and capacity).

My friend recommended this product to me, but I’ll admit I was skeptical that it would actually work. I had an old battery that just wouldn’t hold a charge anymore, so I figured I had nothing to lose by giving it a try. I switched the device to its battery repair mode and let it do its thing. To my surprise, it delivered exactly as promised — it revived my battery and allowed me to charge it again. Now, for the first time in over a year, that battery is holding a charge and working like it’s supposed to. I’m thrilled with the results and can wholeheartedly recommend this product to anyone who needs to breathe new life into an old battery.

There's several flaws in how it's designed, software (or firmware) wise. First, the voltage of the battery shown on the display is incorrect. I have a 12 volt LiFePO4 & this unit shuts off when the voltage reads 14.7 & shows FUL. That number is incorrect. With a multimeter, the ACTUAL voltage is 14.2 Same wrong voltage when I start to charge it. That number is (for example) 13.1 with a multimeter. The charging unit shows 13.7 at startup, so it reads higher than in real life, so keep that in mind. You're not getting as much as what's displayed.Secondly, this unit does show how many amp hours it's putting into the battery. That's great but.....you have to be there right before the unit shuts off or you'll never see how MUCH it put into the battery. In other words, you'll only see how much voltage & amp hours it's putting INTO the battery & not how much it HAS put into the battery....total voltage & amp hours at end of cycle. It'll only show "FUL" at the end of the cycle no matter what you do. Big disappointment there!Other than the two flaws above, this little unit DOES charge the LiFePO4 (with BMS) I have just fine. Doesn't take long when I use the 10 or 20 amp option. I'll probably never use the 5 amp option. That would take FOREVER to top off this battery!And yes...as other have said, the fan is very loud when you use the 10 or 20 amp option. But...it keeps the inside of the charger cool. Ya don't want a fire, do ya??