Any single charger can also do multiple packs if they are in series, require the same amount of charge and are not over the charger's max output voltage.

I am continuing to see a trend that I knew would happen. That is when balance boards appear that allow the user to place multiple packs in series for balancing. It may give the impression that one can throw any packs together in series just because they will plug intio the board and be charged by charger.

The packs still need to be nearly identical in every way when done in series , the same way as any single (multiple cell) pack.

Your particular case is ok since you have identical capacity packs , and they are used in series together equally in an e-revo.

The T-EQ would do a nice job at 100 watts.