What is the Ah rating?

ah rating
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What is the Ah rating?

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The ampere-hour (Ah) rating defines the capacity of a battery. A battery rated at 100Ah at the 10-hour rate of discharge will deliver 10A for 10 hours before the terminal voltage drops to a standard value such as 10.02 volts for a 12V battery. The PC1200 battery, rated at 40Ah will deliver 4A for 10 hours. What is reserve capacity rating? The reserve capacity of a battery is the number of minutes it can support a 25-ampere load at 27C (80F) before its voltage drops to 10.50 volts for a 12V battery. A 12V battery with a reserve capacity rating of 100 will deliver 25 amps for 100 minutes at 80F before its voltage drops to 10.5V.

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