I read the reviews about this trimmer on Amazon.com and found that even though the trimmer was considered good the batteries weren't.
I have this trimmer and I like it very much, but the batteries are a pain. They will not hold a charge any longer, and had very little power after the first season of use.
I have found that if I put a battery in the trimmer, lock the on/off switch on and allow the machine to run until the battery is completely drained, then give the battery a quick charge (2 hours) the machine works almost as good as it did the first season.
However, for the best results the machine needs be used as soon after charging the battery as possible
Freckles