Author Options:

Clarification about AH? Answered

Could you please clarify the following:

"Batteries are measured in Amp Hours or Ah. This is basically the measure of how many amperes can be drawn from the battery in an hour. For instance, a 20Ah battery will let you draw 1 ampere for 20 hours."

Did you mean that you can draw 20 Amps per Hour?

1 Replies

daspoint (author)2018-03-18

You are correct. Likewise, you could draw 2 amps for 10hours , 4 amps for 5hours, 5 amps for 4 hours and so on.
Since LEDs generally draw about .02 amps (20mA) , a 1Ah battery supply should last about 50 hours.

Select as Best AnswerUndo Best Answer