Fortress Power eFLEX 5.4 kWh Lithium Iron Phosphate Battery.  This is a perfect battery for your smaller to mid size 48 Volt solar systems like tiny homes or cabins.  We recommend 700-1500 Watts of solar per battery.  

-High energy density prismatic Lithium-Iron-Phosphate cells.

- Built-in data storage and Wi-Fi for remote monitoring and troubleshooting ability.

-Smart relay-based Battery Management System (BMS), supports closed-loop communication with various 48V hybrid inverters on the market.

-10 Year Warranty with the safe and premium prismatic Lithium-Iron-Phosphate cells.

-Expandable from 5.4 kWh to 81 kWh.

Specifications:
Total Energy: 5.376 kWh
Nominal Voltage: 51.2(48)V
Voltage Range: 45-58.4 V
Max. Charge Current(Continuous): 100 Amp / Recommended Charge Current: 55A
Max. Discharge Current(Continuous): 100 Amp
Recommend Storage temperature: 32 to 95 F
Charge temperature: 32 to 113 F
Capacity: 105 Amp-hour
Dimension(H x W x D): 7.2" x 17.5" x 21.5"
Weight: 116 lbs

https://www.fortresspower.com/wp-content/uploads/2020/12/eFlex-Technical-Datasheet-2020.v4-1.pdf