Chemistry
NCA (lithium nickel cobalt aluminium oxide)
A nickel-rich cathode chemistry using aluminium as the stabilising element, associated with high energy density in cylindrical cells.
What it changes in practice
NCA is the chemistry behind the Panasonic NCR and NCA cylindrical families. It delivers high specific energy, which is why it appears in cells optimised for capacity rather than extreme discharge current. As with any nickel-rich chemistry, the cell depends on the pack managing voltage and temperature windows properly rather than on the chemistry being forgiving.
Why it matters when you specify a cell
NCA delivers high energy density in cylindrical and prismatic formats and is the chemistry behind most Panasonic energy cells. It behaves similarly to NMC in pack design: the same thermal management applies, and the same caution about charging at low temperature. Do not treat the higher energy figure as extra current capability.
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Other terms in this group
What the cell is made of, and what that costs or buys you.
NMC (lithium nickel manganese cobalt oxide)
A lithium-ion cathode chemistry using nickel, manganese and cobalt, dominant in cylindrical power cells and in most traction packs.
Read the entry →LFP (lithium iron phosphate)
A lithium-ion cathode chemistry using iron phosphate, trading energy density for thermal stability and long cycle life.
Read the entry →