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The One Year Smartphone Backup Battery (2400 mAh)
This is the smartphone battery that holds its charge for a full year, ensuring you always have backup power during an emergency. While power seeps out of most rechargeable batteries after only three months of inactivity, this 2400 mAh lithium-ion battery has a unique covered jack that seals in power, so even after a year on the shelf it remains 97% charged. It fully charges an iPhone or Android in under three hours and can charge a device 1-1/2 times before requiring a recharge itself. Smaller than a pack of gum, the device also incorporates an LED flashlight and emergency beacon.
Recharges via USB/AC adapter in six hours.
3-3/4" L x 1-1/2" W x 1" D; (3 oz.)
I bought this about a month ago. I have used it 3 times since. While traveling it isn't always easy to get a seat in the airport next to a charging station, now I don't have to worry about that. I have also used it to charge my phone in my locker while at work since we are not allowed to have our phones on us while on the job. It is also extremely easy to use.
It worked one time for an hour and then second time when I used it it gone except the light. I would not suggest anyone to buy this product
looks like something i need considering my phone is always dying!