User's Manual

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28
AppendixII:INSBatteryLife
ThefollowingfourtablesestimateINSbatterylifeunderthegivenloadimpedanceconditions.
Tables 1 through 4 list estimated longevity based on 1‐lead stimulation, active 24 hours a day. To
estimatelongevityformultipleactiveleadsandtoaccountfordailyusage,usethefollowingformula:

Where,

C2 =
Longevity for Lead 2 Settings
Daily Usage Lead 2
-35
3014
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
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And,
DailyUsageLead1,2,3and4arefractionalvaluesequaltothenumberofhoursstimulationisenabled
foreachleaddailydividedby24hours.
Note:DonotentervaluesforC1,C2,C3orC4forcorrespondingleadsthatareinactive.
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Example:
Estimate longevity for 2 lead stimulation with lead 1 settings of 0.8mA, 40Hz, 200µs across 600 ohms
continuously stimulating, and lead 2 settings of 1.0mA, 60Hz, 400µs across 1Kohm stimulating for 16
hoursperday.
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FromTable1(600ohms),longevityforlead1settings=58.9months
FromTable
2(1Kohm),longevityforlead2settings=34.1mon ths
CalculatedC1=(3014/58.9–35)*(24/24)=16.2
CalculatedC2=(3014/34.1–35)*(16/24)=35.6
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Estimatedlongevityforthisexample=3014/(16.2+35.6
+35)=34.7months