I bought these batteries out of curiosity, and I didn't expect them to be so nice!!! I have a lot of devices that need batteries, but when they are out of power, I have to throw them away. I realize this kind of action harms the environment, because the traditional battery pollutes the water especially.
When I got this box, I was excited to find out the combo has 4 batteries and the cable can charge them at the same time. Excellent stuff! I like it a lot!