It’s straightforward to remove the battery – it’s locked under the footplate but the key is the same as the ignition. I keep my bike in the garage and have a charging point, but on occasion I’ve removed the battery and charged it in the office. The only issue is the size and weight of the battery case, so I keep a strong canvass bag in the storage under the seat specifically to transport the battery (and the charger) to my desk. It takes 4-6 hours to fully charge – the same as when you charge it if it’s still in the bike. Overall it’s a bit less convenient, but not a problem. Good luck with the E15. I’m just coming up to 1 year on mine and it’s still going strong. Tim Lulham.