Additional 1548 Wh Capacity: Compatible with FlashSpeed 1500 and FlashSpeed 1000. Easily connect an additional battery to the FlashSpeed 1500 via a cable and quickly add 1548 Wh of capacity to your power station.
 Fast Charging: Connecting the additional battery to the FlashSpeed 1500 and plugging it into an outlet allows for a full charge in just 60 minutes, allowing you to go further and longer. Reduce your dependence on the grid and achieve energy independence.
 Durable and economical: With an additional battery, more power can be provided to run your essential devices and household appliances for hours.
 Super safety: The extremely safe LiFePO4 battery with integrated LIFEBMS™ system has a lifespan of more than 3,000 cycles.
 Cost-effective solution: With an additional battery, the VTOMAN power station can power essential devices and household appliances for hours.