Watt-hour per kilogram
| watt-hour per kilogram | |
|---|---|
| Unit system | Unit accepted for use with SI |
| Unit of | Specific energy |
| Symbol | W⋅h/kg |
| Conversions | |
| 1 W⋅h/kg in ... | ... is equal to ... |
| SI units | 3600 J/kg |
The watt-hour per kilogram (
batteries and capacitors
.
SI Units
In the
joules
per kilogram.
Typical values
The batteries that
supercapacitors that are typically rated between 3 and 10 W⋅h/kg,[2] with the best commercially available supercapacitors as high as 47 W⋅h/kg.[3]
Nuclear batteries based on betavoltaics can reach up to 3300 W⋅h/kg, although over much longer time periods.[4]
References
- ^ "Tesla’s batteries have reached their limit – here’s how they could go further", theconversation.com, 2017-11-16
- )
- ^ Ronald Brakels, "Arvio Supercapacitor Energy Storage — Powerful Enough To Beat Batteries At Their Own Game?", Solarquotes.com, May 15, 2018. Retrieved 14 Oct. 2021
- ^ Prototype Nuclear Battery, phys.org, June 6 2018
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