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I have bought one battery backup/energizer/secondary power source (2500 mAh). I am going to India this week but not sure whether I can carry battery backup on flight. The website of Air Canada does not specify whether a battery backup is allowed on flight.

To make it more clear for you I have attached the images:

Battery Backup Battery Backup

marked as duplicate by RoflcoptrException Mar 22 '16 at 18:21

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    What is a "battery energizer"? Around here "Energizer" is a brand name for non-rechargeable batteries. Do you mean a charger for rechargeable batteries? Or (guessing wildly) an UPS? – Henning Makholm Mar 21 '16 at 17:31
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    It is like a battery backup which you can use to charge your mobile or tablet. – Kunal Sonone Mar 21 '16 at 18:01
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    The output voltage by device is 5 volt 1 A and 5V/2.1A. It has Li-ion polymer cell. – Kunal Sonone Mar 21 '16 at 18:31
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    These items are sold at the tax free shops in airports, so you would not expect problems. – Count Iblis Mar 21 '16 at 20:25
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    Except it was closed 4 hours after the asker explained what these are using comments, two hours after a commenter had pointed out that these well-known items are commonly sold in airports, and an hour after Howdedo had linked to the duplicate. It's not "the community did not understand", it's a small harmful minority of up to five users failing to read comments. – user568458 Mar 22 '16 at 14:49