Powertech Expansion Battery 2048Wh – Adds Double Capacity to S1, S2 & S3 Power Stations

Your S1 or S3 is doing great — until the job runs longer than expected and the battery hits 20% with two hours of work left. You don't want to swap units mid-task.

The Powertech expansion battery adds 2048Wh to your existing power station. One cable, one connection, double (or more) the runtime. Stack a second unit if the project genuinely needs it.

It also works stand-alone: DC, cigarette socket, USB-A, and USB-C outputs mean you can power low-voltage devices directly without the main unit in the loop.

Charges via solar, mains, or DC. Advanced battery management keeps cell balance tight over the pack's life.

Compatibility check before you buy:
• Works with: MB4102 (S1), MB4104, MB4106 (S3), MB4111
• Does NOT work with: MB4108 or MB4110

Includes the connection cable. RRP $1,499

• 2048Wh additional capacity — effectively doubles your S1, S2, or S3 runtime with a single cable connection
• Stackable: add a second expansion unit for extended multi-day projects
• Stand-alone operation with DC, cigarette socket, USB-A & USB-C outputs for low-voltage devices
• Charges via solar, mains, or DC input with advanced battery management
• Compatible with MB4102, MB4104, MB4106, and MB4111 power stations; NOT compatible with MB4108 or MB4110
• Connection cable included — plug in and go