thats how i measured mine. loaded them all in one half, and tested away. will be a project for another day, but saving them. keep one on the shelf by the light stash, and one by the charger maybe for depleted cells
also saved the life meter from it haha. and got a handy dandy 40a fuse. destroyed the circuit board though. used the brute force method on it. thought thats what was holding the two halves together
edit:
this may be of use to anyone doing this. mine are p49a - dec 2011 from my take of it