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Lead Acid vs Nickel Iron Cells: A Detailed Comparison

By RF Wireless Expert Team

This article compares Lead Acid Cells and Nickel Iron Cells, highlighting the differences between them.

Specifications Comparison

The following table summarizes the key specifications of each cell type:

SpecificationsLead Acid CellNickel Iron Cell
Active Material
1. Positive PlateLead Peroxide (PbO₂)Ni(OH)₄
2. Negative PlateSpongy Lead (Pb)Fe
3. ElectrolyteDilute H₂SO₄KOH
Average e.m.f2.0 volt/cell1.2 volt/cell
Charging VoltageAbout 2.5 volts/cellAbout 1.7 volts/cell
Efficiency
1. Ampere-Hour85-90%75-80%
2. Watt-Hour70-80%60-65%
Internal ResistanceComparatively low5 Times that of lead acid cell
CostLow Initial CostHigh Initial Cost
Life and DischargesAbout 1200 Charges / About 5 yearsLonger
Mechanical StrengthLessMore
Rate of Charge/DischargeLowHigh
Discharge PeriodComparatively smallerLarger

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