I bought this DC House 51.2 v 100AH battery for the features the package provides, including the metal case, included charger, wired monitor, the Bluetooth app interface, and the battery power on/off button.I intend to use this battery as a power source to augment my Delta 2 power station capacity.The battery arrived about 50% charged. I used the charger to top the capacity.With the wired monitor, I observed the individual cell charge levels and they were within .003 volts from each other. It seemed the BMS does a good job of balancing the individual charge levels,... very important!I tried using the battery to charge my EcoFlow Delta 2 power station thru the solar charge port. It worked great, charging the Delta 2 at the max 500 watt rate allowed by the power station.I want to give an objective, honest review of this battery set and DC House as a company. I had read the reviews and saw the promo videos by the company. I believe that they are somehow related to Eco Worthy.I'm somehow satisfied with how this system is currently working, EXCEPT for the battery's Bluetooth-app interface.I downloaded the DC House app and tried to pair and connect to the battery. It FAILED miserably !!I got an error message stating the battery's Bluetooth rejected the app pairing connection.I emailed DC House customer service and requested resolution of my issue.After several back and forth emails, DC House advised that the battery's internal Bluetooth module was defective and that the only way of resolving it was to either send it back for replacement,...OR, I keep the battery as is and they would refund me $150.00 for the inconvenience.I decided to keep the battery and avail of the refund.With all the above said I want to compliment DC House Customer Service, particularly Dante.He was always courteous in his responses even when I perhaps was irritated in my correspondence.DC House responses were prompt and I felt they really wanted to satisfy me and resolve any issues promptly.Even with the Bluetooth issue, I decided this review is worth 5 stars.If I needed another one, I'll purchase again from this company.