Vex controller battery

Aloha, ​ We are charging our VEX controller battery BL-4C 800 mAh 3.7v. And we are wondering how do we know when battery is fully charged?

The little light on the controller goes green when it is charged.

Mahalo( Thank You) calvc01…

No problem! It should take about 2 to 3 hours to charge fully.
Lobster Bot-1-top-2.bmp (19.2 KB)
Lobster Bot-1-Bottom.bmp (18.4 KB)
Jasons (1.55 KB)