I prefer connecting multiple energy storages in series, but I wonder if there is difference when I connect energy storages in parallel. 
Will the EU be multiplied?
Serial energy storage vs. Parallel energy storage
-
-
Nope.
-
Depends on whether you are in the lf branch or the experimental branch.
lf branch
Parallel
Total energy storage will be distributed between the storage units at once, and the one closer to the input will fill up first.
The EU/t output will increase, but the EU/p output will not increase.Serial
Total energy storage will be distributed between the storage units, with the one furthest from the input filling up first.
The EU/t and EU/p output will remain the sameExperimental branch
Similar to lf branch, but EU/p has been removed so beware of burning cables and blowing machines as now machines can only accept a maximum EU/t. ~SpwnX
TIP: Glass Fibre can now hold 8192 EU/t -
before IC2e parralel output more energy into more packets.
in IC2e all packets emitted per tick compressed into single one and burn everything.