Features: Ensure uninterrupted power supply for RPi 5 with this dedicated battery. Designed with a choice of capacity, this battery is perfect for maintaining reliable operation. Use this battery in various applications, such as home automation and development projects, for RPi running smoothly. Stay powered up and avoid interruptions with good quality battery designed specifically for RPi 5. Supports charging, adopts 2PIN JST interfaces, with optional capacity of 25mAh/64mAh Lithium polymer and lithiumion batteries are very unstable When charging and discharging the battery pack, do not connect the battery polarity incorrectly. Specifications: Adopts 2PIN JST interfaces Optional Capacity: 25mAh/64mAh Size: mixed Material：Plastic Package Includes: 1PC Charging Battery note: Do not use other inferior chargers or charging boards to charge lithium batteries. Do not use old batteries, or mix old and new batteries to avoid other brands of batteries. If you need to purchase lithium battery product separately, you must ensure that the battery parameters are compatiblewith the lithium battery expansion board. It is recommended to choose a professional battery manufacturer Self aging testing is required to ensure stable and safe operation of lithium batteries Lithium batteries have a cycle life. Please replace the old battery with a new one after reaching its service life or two years of use (whichever comes first)