MakerFocus Raspberry Pi 4 Battery Pack UPS, RPI Pack Standard 10000mAh Raspberry Pi Battery USB Pack Raspberry Pi Latest Version V3Plus Expansion Board Power Supply Type-C for RPI 4B 3B+ 3B 2B+
- ...an overcharge and overdischarge protection board. Prevents the battery from being overcharged and overdischarged when the external circuit is abnormal, thereby reducing the possibility of damage to the battery..
- Two output modes: In addition to the regular output via the USB port, the V3P output interface adds an LC filter, the ripple is about 20mV under no-load condition, and the ripple is about 50mV when a Pi4 is connected.