Nokishita noticed a new battery registered by Fujifilm overseas the NP-70S is 3.6V 680mAh, which is probably an updated NP-70 that was used in cameras in the FinePix line.
Fujifilm’s unreleased battery “NP-70S” has been registered with an overseas certification body. The nominal voltage is 3.6V and the capacity is 680mAh.
via Nokishita