It's the battery with the big range. Comes with two chargers - one of them is a bit battered but they both work fine. My lifecycle traveller is sadly no more - but just before I went over to my Brompton Nano, I got the Lifecycle Traveller battery re-celled (cost about £250, as far as I remember). I'd be very pleased if you'd like to give me £150 for it, and I reckon postage would be about £20, as it's pretty heavy. Or collection from Leeds LS6.