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Published byAugustus Parker Modified over 9 years ago
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Solar Batteries Batteries are a key component of both grid tie w/ back-up and stand alone solar energy systems
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Three Types of Batteries used in Solar Systems: Flooded lead acid Absorbed Glass Mat Sealed Lead Acid Gelled Electrolyte Sealed Lead Acid
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Flooded Lead Acid Have longest track record in solar usage Longest lifespan Least cost per amp hour High maintenance
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Absorbed Glass Mat Sealed Lead Acid Ideal for grid tied solar w/ battery back-up Low to no maintenance Becoming more affordable
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Gelled Electrolyte Sealed Lead Acid Charges slower than other two types Predates AGM batteries but are losing market share
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Deep Cycle vs Shallow Cycle Deep Deep cycle batteries can be repeatedly discharged to 80% and recharged without damaging them Recommended for use with solar Shallow Occurs when the top 20% or less of the batteries energy is discharged and then recharged Shallow cycle batteries not recommended for solar use
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Weather Effects Batteries Performance The charging and discharging of the batteries is governed by temperature and charge/discharge current The colder the temp. the slower the reactions, and the warmer the faster the reactions Optimum temp. for a lead acid battery is 77 degrees F
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Keep good care of your batteries! Battery voltage should be kept at or above 50% state of charge at all times for maximum battery life Use only distilled water to fill batteries, never tap Keep batteries electrolyte level at the marked full level
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The End.
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