Thanks guys. I knew it was simple, but my head is frizzled and I wasn't sure how to stick it in to Google.
Many thanks
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| Working out how long a battery will last http://www.x404.co.uk/forum/viewtopic.php?f=3&t=5814 |
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| Author: | forquare1 [ Thu Jan 28, 2010 8:48 pm ] |
| Post subject: | Working out how long a battery will last |
Hi all, If I have a few components and I know their power needs, and I have a battery and I know it's power details. How can I calculate how long the battery will last? Many thanks, Ben |
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| Author: | JJW009 [ Thu Jan 28, 2010 8:50 pm ] |
| Post subject: | Re: Working out how long a battery will last |
Divide the Ahr rating of the battery by the combined current consumption in Amps of the components will give expected life in hours. For example, a rechargeable AA battery is typically 2Ahr and will provide 1 amp for 2 hours, or 2 amps for 1 hour. This obviously reduces the more the battery is recharged. |
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| Author: | finlay666 [ Thu Jan 28, 2010 8:50 pm ] |
| Post subject: | Re: Working out how long a battery will last |
current*time ? batteries are measured in voltages and also mah usually, milliamp hours, should be able to roughly calculate from that |
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| Author: | forquare1 [ Thu Jan 28, 2010 9:23 pm ] |
| Post subject: | Re: Working out how long a battery will last |
Thanks guys. I knew it was simple, but my head is frizzled and I wasn't sure how to stick it in to Google. Many thanks
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