AJCMods 3D Printed Replacement "Tall" Battery Strap for the Losi LXT, JRX Pro, JRX2, SE, and more
This allows you to use a standard NIMH or NICD Battery packs, acting as a viable replacement to the A-4001. This also has an optional second rung to use 2s and 3s LiPo Batteries that are much taller than a standard NIMH pack, but to do this you will need to cut away material from the back of the original battery cradle/rear bulkhead block.