The nickel-iron battery of the FM range is having nickel oxide-hydroxide positive plates and iron negative plates.
The active materials are held in nickel-plated steel tubes or perforated pockets.
The technology has regained popularity for off-the-grid applications (solar and wind electric stations) as a constant voltage supply for backup power supply.
Nickel–iron batteries do not have the lead, cadmium, and cobalt which require treatment as hazardous materials. That is why they found a wide recall in the EU.
The storage batteries of this range are used where mid-current discharges (1 C) and high capacity of the battery are needed.
These batteries feature all the advantages of the FL range. They also provide long-term discharge rates with low currents (0,2 C), but, if needed, may be discharged with current (1 C) for a long time.
Therefore, it is recommended to use them in electrical transport as a power supply of electric motor. For instance, high currents may be needed when mining electric locomotive takes off with cars full of ore, or when loader takes a heavy cargo off the ground. In all these cases the battery of the FM range is more effective than the battery of the FL range.
Depending on the type of battery and customer’s requirement, the complete set may include
- Bars to connect cells
- Cables with fittings to connect battery banks (length as may be required), nuts and washers to fix bars and cables
- Spare valves
- Wrench to assemble the battery
The storage batteries can be supplied in containers.
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