power reserve
Battery's remaining capacity
Power reserve refers to stored energy available for future use.
In watchmaking, it indicates how long a mechanical watch will run before needing to be wound again: This automatic has a 72-hour power reserve.
The term extends to any system's backup capacity—batteries, generators, or fuel supplies held against increased demand or emergencies.
- batteryPortable electricity storage
- indicatorSign revealing status
- watchPortable timekeeping device
- Swiss watchTimepiece from a neutral nation
- dialGraduated circular indicator
mainspring · winding mechanism · mechanical · mechanical watch · autonomy · backup · storage · energy storage · energy · charge · complication · winding · wind up · crown · horology · gauge · timepiece · duration
- watch partshands, hand, dial, hour hand, minute hand
- watchmakingloupe, chronograph, tweezers, screwdriver, perpetual calendar
- watch movementsautomatic, mechanical, quartz, manual, self-winding
- watcheswristwatch, pocket watch, analog watch, digital watch, mechanical watch
- SmartwatchesApple Watch, Fitbit, Garmin, Samsung Galaxy Watch, fitness tracker
- clock partswheel, mainspring, pendulum, escapement, dial
power reservepower consumption
Rate of electrical usage
energy expenditure · power draw · load · power drain · discharge
power reservedead battery
Exhausted power source
blackout · energy deficit · drained · flat battery · low battery
power, reserve, powers, powered, powering, powerful, powerless, powerfully, powerlessness