DBTech 8,000mAh High Capacity Power Bank (Dual USB Output 5V-2A/1A plus DC Output 9V 1A) Portable External Battery Pack Charger for all Smart Phones and Tablets and anything that charges VIA USB (3 connector tips included Mini USB, Micro USB and Nokia tip) - NO APPLE TIP INCLUDED but it is compatible with a USB Apple cable

This DB-Tech 8,000mAh Lithium battery provides up to 240 hours of power, so you can talk more, listen to more music, and view videos longer. That's enough juice to fully charge an iPad, or to charge an iPhone 4 about five times.

This devise has 3 Outputs: USB 5V-2A, USB 5V-1A and 9V-1A. Here is a list of the popular Compatible devices divided by the output power.
9V-1A Compatible With:
Tablets / Digital Cameras / DV Recorders / PSP / NDS, NDSL, MID ,Portable DVD ,DV ,hand laptops etc (not compatible with Asus Tablets)

USB Output 5V-2A Compatible With:
iPhone 5, iPad mini, The retina iPad,iPad 4, iPhone 4S, 4, 3GS / iPod / iPad, iPad 2, iPad 3 (APPLE TIP IS NOT INCLUDED Use with your original Apple USB cable)
Samsung Galaxy Tablets & Some Samsung Android Phone Models: Galaxy Tab 7.0 SC-01C / GT-P1000 Galaxy Tab 7.0 Samsung I727 / Samsung A797

USB Output 5V-1A (and the 5V-2A) Compatible With:
HTC: One X, S, V / Sensation / EVO / Inspire 4G / Vivid 4G / ThunderBolt / Incredible 2 S / Rezound / Desire HD S Z
Samsung: Galaxy S3 I9300, I535, I747, L710, T999 / Galaxy Note 2 / Galaxy S2 I9100 / Galaxy Nexus / Galaxy Note / Focus S / Infuse
Motorola: Atrix 2 / Triumph / Droid Bionic Razr
LG: Nexus 4, Optimus
Nokia: N9 / N8 / Lumia 920 900 800
Tablets: Nexus 7 / Kindle / Kindle Fire Others: Blackberry Bold 9900 / Sony Ericsson Xperia Arc S / GoPro