Anyone know what this symbol means?

Posted by Otter940@reddit | ebikes | View on Reddit | 25 comments

Anyone know what this symbol means?

Found on the charger port of a BH EasyMotion 29"

EVO I just picked up. Battery + charger work independently but won't the battery won't charge when plugged in, the charger light just stays green, so when I was getting ready to test the voltage on the frame port, I saw this. It looks like it would be maybe to lock the waterproof cap, but it really only goes in one way. Is it locked and that's why it won't charge? Or is the bracket in a locked position and if I take these screws out, it rotates to an unlocked one or something?