I bought 2 of these batteries and can’t get the battery to charge. And the QR code to the instructions manual brings me to a link that has nothing to do with the product. I also bought a solar panel and am having similar problems with it.
Have 3 external all 3 lasted about 2 months before recharge was needed. Fairly heavy traffic 10-30 photos per day. Hoped they would have lasted longer between recharge.