ELEFAST 12V 300AH Lifepo4 Battery,12V Lithium RV Battery with 200A BMS

There’s a free Bluetooth app to look at battery status, but it doesn’t let you do anything useful. I had to spend another eight dollars to get the Bluetooth app that allows one to control the battery. Not a huge deal, but I had to go “really?” Actual capacity was higher by about 13%. Nice. Without going into the knee, Cell differentials seemed to max out at about 2 mV. Excellent. Good quality workmanship. Good packaging for the shipment. My only complaint was that the dimensions quoted are a bit off. Actual dimensions are slightly larger. I measured 7.6 inches width (includes the joint between bottom and top of case) 15.1 inches length (includes the lifting handles) 10.4 inches height (includes the terminal bolts. A box of these dimensions would give an extremely tight fit. One should allow at least another half inch in height, to allow for connections. An additional inch would be a very good idea. Don’t forget about ventilation. I will need to do a bit of carpentry to make this fit the intended space. Recommend this battery.

The battery arrived with a proper charge and in good shape. The case seems quite sturdy and the terminals feel very secure. This is a whole lot of battery for the money. It's installed now and working as intended. I couldn't get the Elefast app to download so I used the overkill solar app and it works fine with the BMS. I don't think you could buy cells, case and BMS for this price. I hooked it to a 2500 watt inverter and ran it to its capacity with resistive loads and the battery performed as it should. I couldn’t be happier with it.

After being in parallel with my ecoworthy 280ah batterys, it appears to be behaving and working as it should. Its been online for over a month, after I charged it and let it sit a week. It held charge. I have nothing bad to say about it.

When my camper’s pair of 6v golf cart batteries hit the end of their lifespan, I decided to replace them with this battery. Love getting 50% more capacity with half the weight for about the same money. What cinched the deal for me was the ability to monitor and control over Bluetooth (not having to rely on camper’s gauge to determine remaining capacity). One week of boondocking in and zero complaints. Plus it fits easily into my Camco double battery box with room to spare - I used the foam it came packed in to help hold in in place.

I'll say it this way...so far so good. The battery does not seem to get overly hot when being charged or when discharging. The overall dimensions are not exactly right...it's bigger on top than the bottom footprint is by about 1.25" overall (long side). That's to accommodate the handles. My biggest complaint is the Bluetooth app. It's pretty crude and there is ZERO help available. RECOMMEDATION: DO NOT FRGET YOUR PASSWORD!! They have made improvements, but just don't go there!!

The electrical connection bolts are short, can hold at most two connections. It would be nice if maker would standardize on bolt size and provide more than one length. The battery is tall so make sure it will fit in your location.

Unfortunately I can not recommend these batteries. Poor quality product and battery dead after 1 month of using

The battery size is correct, however, with the permanent handles, the battery is actually 15 inches. I hope these fit. If not, have to send them back.