Yes, you can take dry-cell [e.g. AAA, AA, C and D Cell] batteries, nickel metal hydride and fuel cells.
Spillable [lead acid] batteries are not permitted onto aircraft unless for a mobility device and with the airline’s approval.
Dry-cell and nickel metal hydride batteries are not restricted but you should:
Fuel Cells are allowed in portable electronic device [with two spares] if they are marked "Approved for carriage in aircraft cabin only", if not, it MUST NOT be permitted on board the aircraft.
Not sure if you can take it? Contact your airline and check with them.
Batteries can overheat and catch fire.
You will be asked to relinquish all dangerous or prohibited items found in your carry-on luggage. If you refuse:
We x-ray bags going on planes to make sure there is nothing dangerous in them. If something comes up on the x-ray that needs checking, the bag will be opened, searched and any dangerous or prohibited item will be removed.