This battery pack turns the StromPi 3 into a full-fledged UPS solution (see the "RASP STROM PI 3" accessory). The battery pack serves as a third power source; it is monitored and automatically recharged. It is based on LiFePo4 technology and offers several key advantages over standard lithium-ion designs: https://elecena.pl/product/18541648/rb-strompi3bat-raspberry-pi-strompi-3-battery-pack-1000-mah 2021-05-22 https://elecena.pl/product/18541648/rb-strompi3bat-raspberry-pi-strompi-3-battery-pack-1000-mah 2024-07-05 https://elecena.pl/product/18541648/rb-strompi3bat-raspberry-pi-strompi-3-battery-pack-1000-mah 2025-02-08 https://elecena.pl/product/18541648/rb-strompi3bat-raspberry-pi-strompi-3-battery-pack-1000-mah 2026-02-20