Other
“In this project I will show you how to convert a battery from an old laptop into a power bank which can charge an ordinary phone 4 to 5 times with a single charge.”
“Many AA or AAA battery chargers charge batteries in pairs, but plenty of devices use 1 or 3 batteries, meaning that some of your batteries get overcharged and some get undercharged. NiCd and NiMH batteries also benefit from an occasional …
“The idea behind this project was to create a cost effective device that could automatically charge and discharge multiple 18650 cells while determining the effective capacity of each individual cell. Individual cells can be binned by capacity, so multiple parallel …
“As I need several battery protectors for my cars and solar systems I had found the commercial ones at $49 to expensive. They also use too much power with 6 mA. I could not find any instructions on the subject …