In my QUMOX Actioncam SJ4000 the supplied battery had no QUMOX lettering. The scope of delivery as shown in the photo, the battery has the same capacity and the charging shell has a shutdown, the red LED lights up blue, even if a fully charged battery is inserted. Ideal to recharge the battery on the go or at home via Power Bank by AC adapter.
I have the battery charger together now awarded three stars for a week in use and would. I enclose a supposedly full battery in the camera is displayed in me this only 2/3 charge and I can still 30 min. invite.