How To Tell When Arlo Battery Is Fully Charged. You can also lookout for the solid blue light emitted by the adapter when the battery is fully charged. Pull this to reveal the micro USB.

You must use an Arlo Pro power adapter and cable to charge the battery. How do I know when my Arlo Pro 4 is fully charged. The QC 20 icon.
I just recently charged all my batteries.
The maximum brightness of your floodlight does not increase when your Arlo Pro 3 Floodlight Camera is connected to an Arlo solar panel. Ive had one plugged in 12 hours and still no blue light. Camera Battery Level. This indicates the charge of your battery.

