How long does a portable charger last for iPhone 5s?

I got it today and I'm scared it's gonna soon crash & burn - 'cause I have the worst of luck EVER. How long do they last?

Depends on the charger your using. Lithium iron portable chargers are better than ones that take bateries

I have a mophie and i have had it for 1 year now its been great and hasn't given me any problems! I wouldn't worry!

The cheaper chargers are poor Chinese products that don't last long. In general, the more you pay the better the charger. I use this one and have had no problems:

http://www.amazon.com/...B003ZBZ64Q

There's no predicted life for such things.

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