Convoy S2+ when Battery is Low?

LED Flashlights – General Info 18650 Flashlights
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Hello BLF, I have two of the Convoy S2+. Running them in the 3 modes, lo, mid, hi. Really like it.

It does do a little brightness twidle (?) when the battery is low, and then immediately turns off. No fun,

especially when I am in the dark and need a flashlight.

I guess the only indicator I get is that it is dimmer. But not much. Any mod for this?

If I am getting into a mod, is there a driver mod for it so I can get the lower voltage half of the

battery maH. A buck / boost driver? or what?

Thanks.