4 ms·
From linked reference: Silver oxide-aluminium (AgO-Al) Silver oxide-zinc (AgO-Zn) Lithium-Ion (Li-Ion) Lithium-polymer Lithium-iron phosphate (LiFePO4) 1,
by jdjrirkfkfk 6y ago
From linked reference:
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.
- user5994461 6y agoAnd here we are on Hacker News with other threads on how battery density is peaking with Lithium and there is nothing better in sight. Turns out there are silver based battery that can do almost double. So what's the catch as to why it's not being adopted by phones?
- smacktoward 6y agoSilver is expensive, and the Defense Department is substantially less price-conscious than the average smartphone buyer.
- chipsa 6y agoThey're primary batteries. Which is to say: not rechargable.
- janekm 6y agoNon rechargeable phones aren't very popular, and these batteries need air so can't be easily water-proofed. Also they swell during discharge.