Yesterday I bought a Black and Decker cordless string trimmer. It came wit h two rechargeable batteries and the directions say that the first time, ma y take 9 hours for it to charge. We got home from the store and started re
-charging the first one about 10 a.m. When I got ready for bed at 9 p.m. t he green light was still on ... a sign (according to the instructions) that it was not fully charged. I unplugged it and started it again about an ho ur and a half ago.
I wonder if there is something wrong with the battery and at what point do I unplug it and take it back to the store? Or should I hook it up to the s tring trimmer and just see how long it runs before I do anything?
This is my first experience with this type of machine. Always had the kind with a cord before. Thanks.