The Li-ion Battery HAT integrates SW6106 power bank management chip, allows providing 5V regulated power supply to your Pi from a 14500 battery, makes the Pi becomes a portable device. It will charge the battery as well, supports bi-directional quick charge. This module can be used as a universal mini power bank, also works with other 5V devices.
Wiki : www.waveshare.com/wiki/Li-ion_Battery_HATion_Battery_HAT
Weight: 0.021 kg
Note: the Raspberry Pi and 14500 battery in the photo are NOT included.