If your Canon R8 is displaying a "change or charge battery" message while plugged into a power source, it is likely due to insufficient power delivery. Check the power brick at the base of the Glambot® and try a dfferent one. It should be able to support 9v/3a output. If it's a dual-port charger, try unplugging the second cable. For optimal performance, we recommend the Anker 47W Nano Charger.