Power Queen 14.6V 40A Lithium Battery Charger Fast Charging for 12V 200Ah 300Ah LiFePO4 Batteries

Used as a second battery for car after installing additional lighting. Works well. Charges well. Does the job.

WOW! What a powerful charger. It works as advertised. I really like the status display, it inform you where things are with the state of charge. Great Product.

I wish I would have known my 12V 200Ah 100Ah BMS batteries required this charger in order to bring them back from the dead. As soon as my batteries died, I had no way to recharge them. So I did the research and ordered this bad boy immediately! 2 day shipping made my life just that much easier and now I have power once again!! I keep it plugged into the charger which is attached to my 5000W generator and I only run it when I need a little extra power in my camper (which I live in - completely off grid - full time) like when I want to enjoy some AC. Anyway, my only recommendation would be to sell a package of the batteries with the required charger so newbies like me see the option and chose it from the beginning. I'd also like to see a package sold with the controller as well. The charger has been a lifesaver for me. I was panicking and now I'm sleeping like a baby.

Gives a full charge to a 12.8 volt 300mah battery in about 5 hours I'm seriously thinking about getting a higher Amp charger to charge faster but this unit is fine for now thanks power queen...KEV

Bought it to charge my two (2) 410aH batteries after waiting 6 months to install them. Took about 10 hours to charge both batteries. The only improvement I would recommend is reducing the fan's noise.

Awesome lithium batteries for an off grid hunting Cabin in Western Colorado at 8,ooo ft. Great price with awesome reviews.

200 ah of power for the camper, really a game changer it appears to be the ticket. Thanks power queen!!

It works as advertised so far, of course with things like this it is longevity that really determine, so I will see. The only reason I didn't give it a 5 Star rating is that it doesn't track how many Amp Hours have been charged to the batteries.

I generally do NOT generate reviews. Power Queen asked so here it is. It could be the best 12 volt 40 amp Lifepo4 Charger ever made. Or it could be the worst. I'll say it works, and and I think(?) It does what it suppose to do. The reason for the 3 stars is because I contacted customer support with a few questions and received ridiculous answers back. I'm not a tech but know the difference between Positive red & Negative black. My question was: when charging four 100 amp hour batteries in Parallel, should I connect positive on one end (1st battery) and the negative on the last battery (4th) This way the amperage is distributed more evenly. My reply was something like this: Connect all the red positive Together, then all the black negative together. Then you connect the charger positive & negative. It's like I'm not sure if they actually read the entire question or it's a language barrier. Just sad to go for information from other than the seller's technical support. Other then that, they make batteries very good lifepo4 batteries. I have two 100 amp hour 12 volt premiums and four 100 amp hour 12 volt mini's. The four mini's are in my motorhome. The two premiums are in a 24 volt system, a mobility scooter. Thank You db

can't buy a spare charging hook up for this charge. making the product junk in my opinion