Olight Diy omino style charger
Built around a Anker power port usb charger. Just pop in your extra Olight mmc chargers and screw it together with four M3 (I believe) screws . Holes are for fiber optic cable to display charge status. I used a old tosslink cable with the sheathing stripped off. Make sure the fiber goes back far enough and bend it so it jams into the led.