For some a second battery is a must. For others, several years of whooshing precedes replacement. Either which way it can be a bit of a nightmare trying to figure out which battery is which!
Each bicycle fits at least one battery, sometimes there are several options: the more capacious a battery is the further it will take you and the heavier and more expensive it will be.
The best place to start, it to take your battery out of your bicycle and match the details from the dropdown menu at the bottom of this page.
For reference, the Solexity battery is ’36v’ and the ’12ah’ option holds the most juice:
• 36v 8ah
• 36v 10ah
• 36v 12ah
£499.95 – £799.95