How much portable power will these Chargepacks provide? 

That is indicated by each Chargepacks "mAh" rating. "mAh" stands for "Milliamp Hours" and is to Chargepacks what "gallons" is to a car. The more "mAh" you have in your battery, the further you can go without having to recharge, just as the more gallons you have in your car, the further you can go without having to refuel. 

Chargepack capacity can be compared to device battery capacity to gauge the amount of portable power each Chargepack provides.

Each phone, tablet or mobile device has a different battery capacity, measured in "mAh", and each Chargepack has a capacity rated in "mAh" also. By knowing the two, you can get an idea how much value you get when you purchase a Chargepack, because you already know how much benefit you get from your phones full battery. 

 

A Chargepack with 3000 mAh capacity will have enough portable power to charge an iPhone 4 twice, because the iPhone 4's battery is 1420 mAh, and 3000 divided by 1420 = 2 (close enough) .  

 

HOW MANY TIMES YOU CAN CHARGE YOUR DEVICE

HOW MANY TIMES YOU CAN CHARGE YOUR IPHONE 5?

The Apple iPhone in black.
Graph showing how many full battery charges each Chargepack provides for an iPhone 5.

HOW MANY TIMES YOU CAN CHARGE YOUR SAMSUNG GALAXY S3 ?

Samsung Galaxy S3 in black.
Graph showing how many Samsung Galaxy S3 full battery charges each Chargepack provides.

 

HOW MANY TIMES YOU CAN CHARGE YOUR IPAD MINI

Apple iPad Mini in black.
Graph showing how many iPad Mini full battery charges each Chargepack provides.

With that in mind, here are the capacities of key devices. Compare the capacity of your device with the capacity of the Chargepack you are interested in, and that will give you an idea how much value that Chargepack will provide.

Device Battery Capacity (mAh)
Apple iPad  5400
Apple iPad 2 6930
Apple iPad 3rd gen  11 666
Apple iPad 4th gen 11 560
Apple iPad Air  8820
Apple iPad Mini  4490
Apple iPad Mini 2  6471 
Apple iPhone 4 1420
Apple 4s  1432
iPhone 5 1440
Apple iPhone 5s 1560
Apple iPhone 5c 1507
Apple iPhone 6 1810
Blackberry Q10  2200
Blackberry Z10  1800
Blackberry Z30  2880
Dell Venue 7 Pro 4100
Dell Venue 8 Pro 4830
GoPro Hero3 1180
GoPro Hero 3+ 1180 
GoPro HD Hero 1100
GoPro HD Hero 960 1100
Kindle  1530
Kindle Fire 4400
Kindle Paperwhite 1470
Kobo Touch 1420
Kobo Glo 1000
Kobo Arc   4400
LG G2    3000
LG G3 3000
LG Nexus 4 2100
LG Nexus 5 2300
HTC One  2300 
HTC One Mini 1800 
Nook  3200
Nook Color  4000
Nook Tablet  4000 
Nook HD 4050
Nook HD+ 6000
Nook Simpletouch Glowlight 1530
Nook Simpletouch 1530
Parrot Zik Bluetooth Headphones 800
Samsung Galaxy Note 2500
Samsung Galaxy Note 2 3100
Samsung Galaxy Note 3 3200
Samsung Galaxy Note 4 3220
Samsung Galaxy S3 2100
Samsung Galaxy S4 2600 
Samsung Galaxy S5 2800
Samsung Galaxy Edge 3000
Sony Xperia Z 2330
Sony Xperia Z2 3200