:D, my son tired of changing battery of a computer mouse, added charger circuit and battery of his old toys, ( that’s charging circuit of Bluetooth speaker and

:D, my son tired of changing battery of a computer mouse, added charger circuit and battery of his old toys, ( that’s charging circuit of Bluetooth speaker and that’s old helicopter toy battery ) As 8 year old, I’m proud that he recognised a problem and solved it. https://www.dropbox.com/s/ivuxfgyv9ehlvdu/View%20recent%20photos.png?dl=0 https://www.dropbox.com/s/ivuxfgyv9ehlvdu/View%20recent%20ph...