Smoktech Gripper - mechanical mod - how to tell when battery is low?

[WhiteClouds]

Hello,

Just bought my first mechanical mod, the Smoktech Gripper. I plan to use 18350 IMR batteries with it. The following question might sound stupid but, how do i know when the battery level is low ( but not over discharged) and needs to be charged ?

It is pretty easy with my other electronic mods since they have protections over protections system, but with the quite small mechanical Gripper i am not sure yet.

 

[Eivar]

Hey guys, me too, i'm currently using an Ego Passthrough 1000maH, this one blinks and shuts off when its battery is low

But i'm planning to buy a smoktech bolt, but from what i have searched around the net, there is no indicator when the battery is low.
so before i buy this mod, i would like to know how to know when it is time to change or charge batteries.

How will i know its battery needs charging again, because i read that its unhealthy for the battery to over discharge.