     SPECTRUM BATTERIES INC. Calculators    Home Company Information SBI Facilities Products Calculators Warranties Lithium Cell Characteristics Popular Cells for Downhole Applications Safe Handling of Lithium Batteries MSDS Sheets Passivation Depassivation Pulse-Rate Battery-Life , Temperature Conversion, Ohm's Law, Battery Life Pulse-Rate Battery-Life Calculator How long will  device be used? Required Months Days Hours Minutes 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: Amp milliAmp microAmp   Continuous Cycles: Current (Pulse Amps) Duration (Pulse Length) Frequency (Pulses per Hour,etc) Line Item Results (Amp Hours per Day) Cycle 1 Amp milliAmp microAmp Days Hours Minutes Seconds milliSeconds Per: Month Day Hour Minute Cycle 2 Amp milliAmp microAmp Days Hours Minutes Seconds milliSeconds Per: Month Day Hour Minute Cycle 3 Amp milliAmp microAmp Days Hours Minutes Seconds milliSeconds Per: Month Day Hour Minute Cycle 4 Amp milliAmp microAmp Days Hours Minutes Seconds milliSeconds Per: Month Day Hour Minute Cycle 5 Amp milliAmp microAmp Days Hours Minutes Seconds milliSeconds Per: Month Day Hour Minute 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

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