Humsienk 12V 314Ah Bluetooth LiFePO4 Battery 4kWh for Solar, RV, Marine

Replaced the 4 lead acid 6 volt batteries in my RV with this.could not be happier. Takes up less space and less weigh, and more amp hours. Item arrived quickly and was packaged up well. Went camping for a few days and the battery worked perfectly. Nice to have peace of mind not having to worry about having to put water in my old batteries or if the battery would last without having to run the generator.

Started out a little slow because it took a few days to get a confirmation notification. After that all is good very satisfied,saving up for acouple more batteries.

Received today. Delivered via FedEx, package was in good condition. Does not appear to have any damage. Tried downloading app. App won't work with my Galaxy S23 Ultra. I will install battery tomorrow and see how everything goes. Oh I was able to register the warranty.