Hello dear R8 driver, I would like to buy my vehicle from weight technology to buy a light battery. Now I came across an article on the Internet where the company BAR-TEK built into an R8 a Liteblox LB28XX. This Battery has13,2 V and a capacity of 17,5 Ah this corresponds to a 50 -65Ah normal battery, the battery is extremely light but also very expensive. I would personally however be much cheaper on a LithiumNEXT Track60 with 20ah nominal capacity t (60Ah Pbeq). I’m not driving my R8 V8 in winter and it won’t be moved at below 0°. If the battery were sufficient from the start power for my vehicle or it’s absolutely necessary to go to the larger model the LithiumNEXTStreet85 with 85 Ah PbEq, this is unfortunately with 6.5Kg whole 2.5 heavy. Please share your experiences on the topic. I’m also happy to be open to other battery manufacturers the weight of the battery should be but 6.5Kg not excessive Thank you for the support.