Report "I've owned this great little Black and Decker CST800 grass trimmer for 6 years and only use it in Montreal summers (5 months long). Just this past week, I brought it in to recharge it and left it for 5 days on the charge. I went to use it last night and I barely got going when it started losing power. How long is the battery life in this machine? Is it worth replacing or buying a new trimmer? Thanks, Geoff"