I purchased one of these for my classic Jaguar Mk 2 in late 2021. Brilliant. Even when the car has been sitting for lengthy periods, and despite a relatively high draw on the battery during these times owing to trackers etc the car has started perfectly every time with loads of power in reserve. It's pretty much exactly the same size as the Lucas battery originally fitted to the Mk2s as well so it fits in to the engine bay beautifully!