FOSSiBOT brought two extreme-battery rugged phones to IFA 2026: the F107 Pro, which combines a 28,000mAh battery with a 910g body, and the F113 5G, a newer 20,000mAh model positioned as a more conventional—though still oversized—option in the range.
The F113 5G supports 33W charging and includes a 1.5W flashlight that FOSSiBOT says can reach up to 50 meters. Its hardware includes a MediaTek Dimensity 7050 processor, 12GB of physical RAM, 256GB of storage, a 6.78-inch 120Hz display and a 64MP Night Vision camera. The handset is rated IP68, IP69K and MIL-STD-810H. Further specifications are listed on the FOSSiBOT F113 product page.
The F107 Pro takes the battery capacity further, with a 28,000mAh cell in a device that is nearly 40mm thick. It supports 66W charging and 10W reverse charging, allowing it to supply power to smaller devices. Its 910g weight underscores the physical trade-off required for that capacity.
The phones fit into a wider FOSSiBOT battery-focused portfolio that also includes portable power stations. The F1800 is rated for 1,024Wh of capacity and 1,800W AC output, while the F2400 increases those figures to 2,048Wh and 2,400W. Both offer USB-A, USB-C and AC connections, along with solar-panel input.
Pricing, release timing and market-by-market availability for the F113 5G were not provided in the available information. The IFA lineup nevertheless shows FOSSiBOT extending the same high-capacity approach from portable power stations into phones, with the F107 Pro setting a notably heavy 28,000mAh benchmark.
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