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| 1. |
Total
average amp hours per day from the System
Loads Worksheet: |
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| 2. |
Maximum
number of continuous cloudy days expected in
your area: |
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If no special conditions below apply, skip
to line 6 |
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Special Conditon #1: Heavy electrical
load
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| 3. |
Maximum
amperage that will be drawn by the loads for
10 minutes or more: |
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| 4. |
Discharge
rate of battery. If unknown, check with
battery supplier: |
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Special condition #2: High Charge
Current
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| 5. |
Maximum
output amperage of PV array or other battery
charger: |
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6.
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If
you are using a lead-acid battery, select the
multiplier below which corresponds to the
battery's wintertime average ambient
temperature:
| Battery
Temperature Multiplier |
| 80°F/26.7°C |
1.00 |
| 70°F/21.2°C |
1.04 |
| 60°F/15.6°C |
1.11 |
| 50°F/10.0°C |
1.19 |
| 40°F/4.4°C |
1.30 |
| 30°F/-1.1°C |
1.40 |
| 20°F/-6.7°C |
1.59 |
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| 7. |
Amp-hours of
battery chosen. (Industrial Cell, GCR=220,
L16=350 etc.): |
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| This
is the number of batteries you need: |
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