Additional power with maximum efficiency

Expansion module compatible with:

• i9power S1 2000W Portable Power Station
• i9Power S2 2500W Portable Power Station
• i9Power S3 3600W Portable Power Station

The i9Power B2-BAT is the ideal expansion module for increasing the total power capacity of the i9Power S2 2500W station. With 2048Wh (52.8V / 40Ah) of stable and safe additional power, this highly durable LiFePO₄ battery guarantees over 3,000 life cycles while maintaining 80% of its original capacity, offering long-term reliability in both domestic and professional contexts, as well as off-grid.

Expandable and intelligent

Designed for seamless integration with the S2 Power Station, the B2-BAT allows you to create modular systems that adapt to your energy needs. By combining up to 15 units, you can achieve 32,768Wh of total capacity, providing continuous and safe power for homes, caravans, small businesses, and emergency applications.

Complete connectivity and efficient recharging

The B2-BAT includes multiple output and input ports for maximum versatility:

• DC 12V / 10A (car socket and DC5521)
• Anderson 12V / 30A
• 4× USB-A (up to 18W max)
• 2× USB-C (PD 100W max)
• MPPT 2100W solar input (18–140V / 15A max)

This flexibility allows you to power various devices and recharge quickly via solar panels, the mains electricity supply or a direct connection to the S2 main station.

Robust and durable design

With a fire-resistant ABS+PC structure, IP21 protection, and weighing only 20 kg, the i9Power B2-BAT combines portability with durability. It measures 460 × 270 × 255 mm and comes with a 3-year warranty, ensuring safety and consistent performance in any environment.

Compact and reliable solution for off-grid power

The i9Power B2-BAT has no inverter or AC output — its role is to expand the autonomy of the S2, communicating intelligently with the main station to balance energy flow and optimise charging. It is the ideal choice for those seeking sustainable energy autonomy, with ease of use and full compatibility.