So i bought this "Brand" name cordless drill about five years ago. As it was around 30 $, i did not expect anything spectacular. And while it worked, it was grate. But after few months of using it, i noticed that battery drains it self very fast. Regardless if you wore using it or not. After the inspection i noticed that it can not hold any load. i tried reviving it. it did not help. so i searched for a replacement. it cost from 15 $ for flimsy shit china could offer to a ±45 $ which was too expensive. so i went on ebay, ordered some elements. total cost was arround 10 $. and if the mAh is correct, double the capacity. more in the video :
https://youtu.be/PoNIRWuNvnk