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I have an LED strip which requires a 5v input, to run from a portable power supply. The power supply has a capacity of 2200mAh with maximum output of 1A.

How long would the power supply be able to power the LED's before it needed replacing?

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  • \$\begingroup\$ I can't answer this question. What does the LED strip require? \$\endgroup\$ – Trevor_G Mar 20 '17 at 15:25
  • \$\begingroup\$ Edited. Forgot to mention it needs a 5v input. \$\endgroup\$ – S tommo Mar 20 '17 at 15:27
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    \$\begingroup\$ Need either the wattage or the current it takes too though. It will run till the end of time at 5V if it takes no current. \$\endgroup\$ – Trevor_G Mar 20 '17 at 15:28
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    \$\begingroup\$ I have a car that has a 15 gallon gas tank. How far can I drive it before it runs out of gas? \$\endgroup\$ – mkeith Mar 20 '17 at 15:34
  • \$\begingroup\$ Power is 4.6W current 1A \$\endgroup\$ – S tommo Mar 20 '17 at 15:37
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If the led strip takes the max of 1A it will be 2.2hours (2200mah/1000ma)

If the led strip is less that 1A use the above equation.

However, 2200ma will be rated at a particular load factor. Actual times may vary.

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  • \$\begingroup\$ It does use the maximum. Just needed a reasonable idea. Thanks! \$\endgroup\$ – S tommo Mar 20 '17 at 15:46
  • \$\begingroup\$ @Stommo, if this answer helped you, please consider up-voting it or accepting it. \$\endgroup\$ – mkeith Mar 22 '17 at 3:45

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