All you need is a tiny portable charger, some velcro tape and a mini usb lead. Charger is no wider then the game shell, is secure, and actually feels great with the extra depth and weight! And best of all, in that position the cable doesn’t get in the way, just goes straight through your fingers when using the light keys!
The charger is an Anker 10000 (first model, the second is bigger)
Anyone got any better suggestions for securing this thing? Although this works way better then I thought it would!