Battery connected to a power source
No English term
A battery connected to a power source so that at times of peak demand its ouput is added to that of the source, while at times of low demand the energy available from the source is sufficient to recharge the battery.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
Number of cells
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM