Features:
【Multi-functional Battery Charger】The storage charger for battery is designed as a combination of a battery charger and a container for battery. The charging box can simultaneously charge 3 batteries, supports 15W USB-C input, which is also able to store your batteries and 2 memory cards as a storage box.
【Stamina 1720mAh Battery】1720mAh large capacity battery with long-lasting battery life has a high performance during freezing temperature, even under 20℃, which ensures a longer and much more durable photographic activity.
【Fast-Charging Battery】The in-camera battery is fast charging which can be 65% charged in 30 minutes and be fully charged in 80 minutes. 
【Independent Indicator】There are 4 indicator lights to display the different states of the battery power, which respectively represent as 30%, 50%, 75%, 100%, so the charging box provides a clear overview of the charging state.
【Compatible with The Original】The fast charging battery and charger is fully decoded so as to be fully compatible with hero 11, hero 10, hero 9. No pop-ups would show up which will never harm your camera.
【Portable & Compact】The pocket charging case
Features in lightweight body only in 2.5cm thick with big storage. And the small size which is in 4.5 x 2.3 x 0.98in, can be easily stored in your pocket.

Specifications:
Brand: TELESIN
--Battery
Size: 40.7 x 33.6 x 13.2mm/ 1.6 x 1.3 x 0.5in
Weight: 32.58g/ 1.15oz
Input Voltage: 4.4V
Temperature: -20C-60℃
Capacity: 1720mAh
Model: Compatible with GOPRO11/10/9
-- Battery Charger
Size: 115 x 59.5 x 24.9mm/ 4.5 x 2.3 x 0.98in
Weight: 85.6g/ 3oz
Temperature: 0℃-4o℃
Compatible Model: Compatible with GoPro11/10/9 original battery, TELESIN blue square battery and yellow round battery.
Input: Type-C 5V/3A
Packing List:
1 * Charging Case
2 * Stamina Batteries
1 * Manual
1 * USB-A to C Cable