Wikia

Biofuel Cell
Name	Biofuel Cell
Type	Storage
Luminance	No
Stackable	Yes (64)
Data Value	dec:30227
Mod Included	Industrial Craft 2

The Biofuel Cell is used to replenish a Fuel Can, which can later be used to refuel a Jetpack or to be used in a Generator for producing EU. Biofuel Cells, as opposed to Coalfuel Cells, are a renewable way to refill Fuel Cans. 6 Biofuel cells are needed to replenish a Fuel Can .

The only downside to using Biofuel Cells is that the EU output is just over a third of the EU output of a Coalfuel Cell.