Some days ago I received a package from Telesin with 3x GoPro Hero 5/6/7 Batteries, a Triple Charger and some screen and lens protector.
The Triple Charger is a very useful GoPro accessory because you can use it like a small case for three batteries and you can charge them at the same time. The charger has three leds, one above each battery and shows the charge status (red, orange and green).
The batteries works on GoPro Hero 5/6/7 models and I suggest to buy them to people that are searching for a good charger and cheap batteries.
Each battery has 1220 mAh and the duration is similar to the original battery branded GoPro.
I also suggest you these Telesin screen and lens protections to avoid scratches that ruin your photos.
You can buy these Telesin products on Amazon: