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Suitable Backup Power for Arduino
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Suitable Backup Power for Arduino

by ghuser on Thu Mar 31, 2016 9:10 am

I'm looking for a suitable backup power for arduino (drawing 1A) which takes 5v from a supply and has battery backup. It only switches to battery if there the power supply is off. If power supply is on it uses it and does not draw from the battery. Is there any suitable product available at Adafruits. Does the following allow this:
USB Battery Pack - 2200 mAh Capacity - 5V 1A Output
PRODUCT ID: 1959

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Re: Suitable Backup Power for Arduino

by adafruit_support_rick on Fri Apr 01, 2016 11:04 am

You want to use a PowerBoost. It will do the automatic failover. You can use a PowerBoost 500C or a PowerBoost 1000C.
https://www.adafruit.com/products/2465
https://www.adafruit.com/products/1944
The difference is that the 1000C will change the battery faster. If you don't care about that, get the 500C. The 500C also comes in a shield version:
https://www.adafruit.com/products/2078

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