These had been reduced to 1/25th scale from larger sizes. Has 1 regular battery and 2 versions of the Optima battery. This is a basically a remix of several batteries out there
I have uploaded the corrected size, apparently I calculated it to the wrong dimensions.
I have printed it out and it looks really good, in the picture shows the 3 batteries with a kit battery from the 67 Impala kit
Print speed is at 45 ms. Retraction speed is reduced to 40 ms and retraction distance set to 4 ms