This 1 × 12V 280Ah LiFePO4 Battery GP-LA12-280AH Basic Deep Cycle Battery is perfect for my boat.
I added it to my older lifepo4 280 AH battery that was more than three times the price.
The gobel battery has a more robust casing, nice terminal shields and a much nicer app.
I use a battery switch to switch between batteries as shown on the picture.
https://photos.app.goo.gl/UvcPKmnjhAUjt4e26
Nice detail is that the xiaoxiang app connects to my old battery, so I can monitor them both from the same app.
Only minor flaw is that the app does not show the remaining capacity in AH, only in percentage.
https://photos.app.goo.gl/PaxnZMvXXe4zyVTz8
The battery is powering my inverter and it gives me power to sail the seas for three days and use my coffee machine and water boiler off grid.. Great!
https://photos.app.goo.gl/uk9vVLpMCmGRpSQE9
https://photos.app.goo.gl/YZFcBDRVNdzo35B97