ISDT C4 AAA

This is a remix of Powerross's ISDT C4 AAA adapter in order to use different battery contacts. I used the ones with the springs from a set I bought on amazon.
https://www.amazon.de/gp/product/B07JGY1HQ7/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
In additional I adjusted slightly the inner length and in combination with the springs, I now can charge 4x AAA's or 4x protected 10440 Li-ion Cells from TrustFire at the same time.