https://github.com/Gmanmodz/Wii-Power-Management-System Here are the pcb files, code, and bill of materials for my Wii Power Management System. 4 buck regulators - 1v, 1.15v, 1.8v, and 3.3v 1 boost regulator - 5v Battery management IC - seamless play and charge and battery protection PIC microcontroller Interface: hold down button for around 1 second to turn on and off. Tap button shortly to cycle through the led modes: 1. leds off 2. RGB fade 3. Battery monitor 4. Shipping mode (when it is turned off in this mode, it cannot be turned on until you plug in a charger) the interface is shown in the Wiivision: A - "Auxiliary" IO. default code there is no purpose. btn - wire to a tact switch connected to ground for on/off T-, T+ - thermistor for thermal protection. Cuts off ~75C R-, B-, G- - wire to the common anode RGB led, Anode can be wired to a source voltage like 3.3v CHRG - this is the DC voltage source charger input. Recommended to use 12V DC. Cannot exceed 14V! The default code is set to I charge 3.072 A which is ideal for a 1S2P 18650 battery configuration. Please make sure to check the specifications of the battery against the charging settings of the system before use. B+ - Battery positive connection It's not perfect by any means but it is stable and has already been installed working in 3 portables. I would like to thank Aurelio for the answers to many questions I had over the past 2 years I've worked on this and also for the inspiration from his Powermii. I'd also like to thank Shank for helping me test it further on the Wiivision project.