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opinion:frater_secessus:panelsizesforinsolation [2020/06/24 18:22] frater_secessus [Amount of solar wattage required per 100Ah of Pb] |
opinion:frater_secessus:panelsizesforinsolation [2021/12/30 13:46] frater_secessus [Amount of solar wattage required per 100Ah of Pb] |
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===== Amount of solar wattage required per 100Ah of Pb ===== | ===== Amount of solar wattage required per 100Ah of Pb ===== | ||
- | These figures have temperature-related derating baked in, then are rounded off to usable numbers. | + | These figures have [[electrical: |
Assumptions: | Assumptions: | ||
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* MPPT controller is 95% efficient | * MPPT controller is 95% efficient | ||
* PWM yields, overall, 85% of MPPT yield. | * PWM yields, overall, 85% of MPPT yield. | ||
- | * isolator charging is done in early morning, and discontinued when alternator no longer raises voltage. | + | * isolator charging is done in early morning, and discontinued when alternator no longer raises voltage. |
- | * DC-DC (or generator) charging is is done in early morning, and discontinued when Vabs is achieved. | + | * DC-DC (or generator) charging is is done in early morning, and discontinued when Vabs is achieved. |
* wattage listed as '' | * wattage listed as '' | ||
* solar-only charging the same number of amps into lithium would require about 15% less panel than lead. Lithium can be charged successfully off alternator/ | * solar-only charging the same number of amps into lithium would require about 15% less panel than lead. Lithium can be charged successfully off alternator/ |