Energy storage/specs
Type | Specific energy (watt hours per kg) |
Specific power (watts per kg) |
Charge time (minutes) |
Self-discharge (% per month) |
Roundtrip efficiency (%) |
Lifespan (charge-discharge cycles) |
Lifespan (years shelf life) | |
---|---|---|---|---|---|---|---|---|
Lithium-ion batteries | ||||||||
Lead-acid batteries | ||||||||
Iron-redox flow batteries | ||||||||
Flywheels | ||||||||
Hydrogen gas + fuel cell | ||||||||
Hydrogen gas + combustion engine | ||||||||
Hydrogen gas + combustion for heating only |