John Mason (Batteries) Ltd. Tel: +44 (0) 1506 635361

Sales / Products

Application

Long service life, maximum resistance to cycling and reliability under all load conditions are the distinguishing features of this range of batteries.

FNC single cells with ratings of 20 to 1500 Ah are available. They conform to DIN 40763 and IEC 623 standards.

FNC cells may be used with electrolyte temperatures of between -40C and + 45C.

The internal resistance of FNC cells ranges from moderate to very low, according to type. On the strength of their proven characteristics, FNC cells are used to supply power:

- for UPS systems (FNC-X, -H, -M, -L)
- in power stations and substations (FNC-H, -M, -L)
- for emergency lighting systems (FNC-L)
- for alternative power supply systems (FNC-L, -M)
- for offshore and shipboard installations (FNC-X, -H, -M, -L)
- for telecommunications systems (FNC-L)
- for emergency diesel power plants (FNC-X, -H)

In standby power operation and for float charging with occasional discharge at an electrolyte temperature of 20C the life exceptency will be the maximum. Under cyclic loading, more than 2000 times the rated capacity can be withdrawn (according to DIN standard).

FNC cells are tested and approved by:
- Det Norske Veritas
- German Lloyd
- Lloyds Register of Shipping

FNC batteries have successfully completed TUV shock and vibration tests.

Battery Construction

- Electrodes
The positive and negative electrodes consist of nickel fibre matrix structures and active material which contains no graphite or iron. Due to the unique electrode design it is not neceassary to add graphite to increase conductivity and enhance utilization of the active material. Consequently there is no carbonate formation out of the electrodes and no electrolyte changes are needed during the entire life of the battery.

The three-dimensional fibre structure of nickel fibre composite material is very elastic. Mechanical stresses and changes in volume during charge/discharge cycles are thus absorbed by the electrode.

- Separators
The positive electrodes are encased in microporous separators. These are so designed as to ensure reliable separation of the electrodes and to provide the cells with low internal resistance, corresponding to their design load rating.

- Containers
Cell containers are made of translucent, heavy-duty polypropylene (PP), making it easy to check the electrolyte level. Cell containers and lids are welded together, proof against the escape of electrolyte. Special O-ring seals at the pole bushings ensure the necessary quality of sealing.