Cutoff voltage
Encyclopedia
In electronics
, the cutoff voltage is the voltage at which a battery is considered fully discharged, and it is good practice to stop discharge at this point. Some electronic devices, such as cell phones, will automatically shut down when the cutoff voltage has been reached.
discharge is considered complete. The cutoff voltage is usually chosen so that the maximum useful capacity of the battery is achieved. The cutoff voltage is different from one battery to the other and it's highly dependent on the type of battery and the kind of service in which the battery is used. When testing the capacity of a NiMH
or NiCd battery
a cutoff voltage of 1.0 V is normally used. 0.9V is normally used as the cutoff voltage of an alkaline cell. Devices that have too high cutoff voltages may stop operating while the battery still has significant capacity remaining.
equipment does not fully use the low-end voltage spectrum of a battery
. The equipment cuts off before the designated end-of-discharge voltage is reached, leaving some battery power unused.
A high cutoff voltage problem is more widespread than is commonly assumed. For example, a certain brand of mobile phone that is powered with a single-cell Lithium-ion battery cuts off at 3.3V. The Li‑ion can be discharged to 3V and lower. With a discharge to 3.3V, only about 70 percent of the expected 100 percent capacity is used.
Electronics
Electronics is the branch of science, engineering and technology that deals with electrical circuits involving active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive interconnection technologies...
, the cutoff voltage is the voltage at which a battery is considered fully discharged, and it is good practice to stop discharge at this point. Some electronic devices, such as cell phones, will automatically shut down when the cutoff voltage has been reached.
Batteries
In batteries,the cutoff (final) voltage is the prescribed lower-limit voltage at which batteryBattery (electricity)
An electrical battery is one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery in 1800 by Alessandro Volta and especially since the technically improved Daniell cell in 1836, batteries have become a common power...
discharge is considered complete. The cutoff voltage is usually chosen so that the maximum useful capacity of the battery is achieved. The cutoff voltage is different from one battery to the other and it's highly dependent on the type of battery and the kind of service in which the battery is used. When testing the capacity of a NiMH
NIMH
NIMH or NiMH may refer to:*Nickel-metal hydride battery, a type of rechargeable battery*National Institute of Mental Health, a part of the United States National Institutes of Health...
or NiCd battery
Nickel-cadmium battery
The nickel–cadmium battery ' is a type of rechargeable battery using nickel oxide hydroxide and metallic cadmium as electrodes....
a cutoff voltage of 1.0 V is normally used. 0.9V is normally used as the cutoff voltage of an alkaline cell. Devices that have too high cutoff voltages may stop operating while the battery still has significant capacity remaining.
Premature voltage cut-off
Some portablePortable
Portable may refer to:* Portable building, a manufactured structure that is built off site and moved in upon completion of site and utility work...
equipment does not fully use the low-end voltage spectrum of a battery
Battery (electricity)
An electrical battery is one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery in 1800 by Alessandro Volta and especially since the technically improved Daniell cell in 1836, batteries have become a common power...
. The equipment cuts off before the designated end-of-discharge voltage is reached, leaving some battery power unused.
A high cutoff voltage problem is more widespread than is commonly assumed. For example, a certain brand of mobile phone that is powered with a single-cell Lithium-ion battery cuts off at 3.3V. The Li‑ion can be discharged to 3V and lower. With a discharge to 3.3V, only about 70 percent of the expected 100 percent capacity is used.