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9 Volt Battery Operating Voltage
9 Volt Battery Operating Voltage. The short answer is 8 v and above is a good battery. When placed under load by the ulx transmitter, the voltage fell to 7.7 volts, but held steadily above 7.0 volts for nearly nine hours.
A nine volt battery has six cells, so a new would have an open circuit voltage of 9.48v. When placed under load by the ulx transmitter, the voltage fell to 7.7 volts, but held steadily above 7.0 volts for nearly nine hours. A reading of 9v indicates a battery with no to less than 10% discharge.
The C2 Charged To 8.3 Volts.
With a heavier load (an led directly across the terminals, or a motor) the output voltage drops because the battery can’t provide enough power for the heavier load. The first thing to realize is that 9 volt batteries were never designed to operate at 500 ma. That’s exactly how a nearly empty battery will behave:
A Reading Of 9V Indicates A Battery With No To Less Than 10% Discharge.
5 years at 21°c terminal: Fwiw they do self discharge at about 2% a year. 9 volt batteries are not single batteries but are combination of six smaller 1.5 volt cells.
According To The Energizer Battery Application Manual, A New 1.5V Cell Typically Has An Open Circuit Voltage Of 1.58V.
A fully charged car battery voltage should be 12.6v or above, this is with the engine off. Again, these curves are really ugly, since 1 amp is a lot for these transistor radio style batteries. The short answer is 8 v and above is a good battery.
To Get A True Voltage Reading Of The Cars Battery It Is Important To Measure The Voltage After The Car Has Been Sat For A Period With The Engine Off, Preferably Overnight, This Provides You With The “Car Battery Open Circuit Voltage” Or Also Know As The “Resting Voltage”.
It’s not the entire answer, the battery typically really starts to spiral down at about 7.4 v that’s abo. 9v/5v power supply technical specifications. That's why you will need the best 9v batteries for operating electronic circuits with an input voltage requirement of 9 volts like a smoke detection system, fire.
Fwiw They Do Self Discharge At About 2% A Year.
However, it is evident that some 9 volt batteries are better than others at this high current. Whereas batteries like aa or aaa are individual cells designed to be 1.5 volts and at higher capacities like 500 mah to 2500 mah.(aa) and 200 mah to 1000 mah (aaa). Output voltage/current output 1 :
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