Fossibot FB3840 Expansion Battery

Although this device is nominally an expansion module, its functionality goes beyond being a passive appendage to the main power station, offering users flexible usage scenarios. Primarily, it is a massive energy storage unit based on a LiFePO4 battery, which, despite weighing almost 38 kg, is equipped with a wheelbase and telescopic handle for easy movement around the site. The capacity of a single module is an impressive 3840 Wh, and the cell lifespan reaches a record 6500 cycles at 50% discharge, ensuring more than a decade of active use.

The core purpose of this model is to work in tandem with the flagship F3600 Pro station, allowing for the system’s overall energy independence to scale up to 11520 Wh when two units are connected. However, unlike many competitors, the Fossibot FB3840 Expansion Battery can also function as a standalone DC power source. Engineers placed its own interfaces on the case: a USB-A port with fast charging at 18W and a powerful USB-C output at 100W, enabling users to charge laptops, smartphones, or power LED lighting directly from the battery, even if the main unit is absent.

The module is equipped with its own informative display and supports autonomous recharging from solar panels via an XT60 port with up to 200W, making it an independent element of the backup power system. Key Features: - High capacity and cycle life: 3840 Wh and 6500 cycles make it durable and reliable. - Mobility: Equipped with wheels and a telescopic handle for easy transport. - Versatility: Acts as both an expansion module and standalone power source. - Multiple charging interfaces: USB-A fast charging and powerful USB-C output. - Solar charging: Supports up to 200W via XT60 port.