Chosen Solution

I lost my charging case and it doesn’t sell separate separately. I don’t want my device to go obsolete so please suggest me some other way to charge it up as I cannot afford to buy another. I think charging with AA batteries should be safe if not slow. Can I use the multimeter to determine polarities?

Hi Ahmad Shumayal, I would not recommend trying to make a custom case. There would likely be to many variables that can cause damage to you or the device. This link should help you with getting a new charging case.