Check out the ko propo/Kyosho power switch, which is a little more expensive than the protek but it actually has a better battery meter and easier to tell before you get close to LVC. The protek and VRC pro power buttons only have two led and before a 30 minute main it may not be blinking the low level alert yet so you think you are fine but the ko propo and Kyosho button have a led light bar with multiple green, yellow and red light bar so you
Can tell easier when you should charge it. But if you are very dilligent about charging like it sounds roklem is then the protek is probably fine