Silver oxide-aluminium (AgO-Al)
Silver oxide-zinc (AgO-Zn)
Lithium-Ion (Li-Ion)
Lithium-polymer
Lithium-iron phosphate (LiFePO4)
1,040 Wh/kg
490 Wh/kg
600 Wh/kg
600 Wh/kg
520 Wh/kg
The F21 is powered by a new generation of silver oxide-aluminium (AgO-Al) sea-water primary battery using dissolved sodium dioxide powder as electrolyte and incorporating a new electronic closed loop electrolyte circulation system.
In comparison with silverzinc and other technologies, AgO-Al energy density is unrivalled. It ensures both maximum speed beyond 50 knots and endurance around 1 hour without compromising safety.
TIL: A silver-oxide battery (IEC code: S) is a primary cell with a very high energy-to-weight ratio. They are available in small sizes as button cells, where the amount of silver used is minimal and not a significant contributor to the product cost.