I have a pair of those old Smart 10+2W lights with the Pb/acid pack that swings under the top-tube. Its about 8 years old and in its youth would give me two hours on full wack and about 8 hours on "side-light". Its feeling its age now and will give me about 1 hour from full charge plus some more on side-light. This is fine for most things I do, but a little lacking for the Solstice Tan Hill run on Sunday week. I don't want to splash out just for this one ride, so could anybody lend me a similar (more reliable) set-up?
We have 2 sets of Smart lights like your own but not quite of the same vintage and you are welcome to borrow a set? I've charged them both up and will run them down & recharge a time or two before the big day just to double - check if they will hold charge.