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Pulse-Rate Battery-Life , Temperature Conversion, Ohm's Law, Battery Life

Pulse-Rate Battery-Life Calculator

How long will 
device be used?
Required 



Result: Amp Hours 
Needed

Note: If the discharge profile changes, each must be calculated separately and then added together.
For example: If a device discharges with a small background for 30 days and then the device starts a pulse discharge for another 30 days, you must calculate this as 2 separate discharges.  The results of both discharges are then added together.

Background
Current:

    Continuous

Cycles:

Current
(Pulse Amps)		 Duration
(Pulse Length)		 Frequency
(Pulses per Hour,etc)

Line Item Results
(Amp Hours per Day)

Cycle 1




Per:

Cycle 2




Per:

Cycle 3




Per:

Cycle 4




Per:

Cycle 5




Per:

Created by Ross Bennett        © Spectrum Batteries, Inc. 1999

Ohm's Law Calculator

Volts / Amps = Ohms

/

=

     millivolts
     volts

    

     milliamps
     amps

    ohms

Enter any two values, then press "Calculate"

      

Ohm's Law Formulas:
R=Resistance(Ohms)
E=Voltage(Volts)
I=Current (Amps)

(R=E/I) or (E=IR) or (I=E/R)

micro =   0.000001
milli = 0.001
Kilo = 1000
Mega = 1000000

Created by Ross Bennett        © Spectrum Batteries, Inc. 1999

Temperature Conversion

ºF   = ºC
Enter either value, then press "Calculate"

      

Temperature Conversion
Formulas:

ºF = (ºC x 9/5)+32
ºC = (ºF - 32) x 5/9

Created by Ross Bennett        © Spectrum Batteries, Inc. 1999

Battery-Life Calculator

Amps x Hours = AmpHours

x

=

    milliamps
    amps 

     days
     hours

     AmpHours

Enter any two values, then press "Calculate"

      


Created by Ross Bennett        © Spectrum Batteries, Inc. 1999

Ohm's Law

When using cell manufacturer's recommended resistive load values to de-passivate cells, keep in mind that the voltage of packs will most likely be higher than the voltage of individual cells.  Thus, the resistive loads needed to de-passivate packs will be higher than cells due to Ohm's Law.

V (voltage) = I (current/amps) x R (resistance)
W (watts) = V (volts) x I (current/amps)

Spectrum Batteries, Inc.* 6910 Sprigg Rd. * Fulshear * TX * 77441

PH: 281.533.9596 * FX: 281.533.9669
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