Just fitted this as my leisure battery has been floating around for long enough. Highly recommend it for the money. NOCO BT31S Group 31 Heavy-Duty Battery Tray for Marine, RV, Camper and Trailer Batteries, Black https://amzn.eu/d/1CcwSeJ
Hello together, the sturdy metal holders for the starter battery are also available as spare parts. The wedge at the bottom for the fastening and the U-shaped strip to the outside wall. This means that even a larger, heavy battery can fit safely on the other side. Can be welded on, I simply screwed these on. This means that a larger battery (up to 353 mm long - limited by wheel arch and taillight) can fit on the other side. Good luck crafting,