Ventev Powercell 6000 Portable Battery | Power Bank with Two USB Ports | 6000 mAh, Rapid Charge | Ultra Compact External Battery Pack for Smartphone, Tablet, Headset ULTRA COMPACT: One of the lightest batteries on the market makes the Powercell 6000 perfect for travel. The slim and compact design makes it easy to slip into a bag, briefcase, or even a shirt pocket. Have the power you need, anywhere you go HIGH SPEED CHARGING: The might of the 6000 mAh battery delivers enough power for 25 hours of talk time, 20 hours of internet on 4G and video playback, and 100 hours of audio. Recharge the battery pack in only 4 hours with the included USB charging cable TWO AT A TIME: Charge two of your devices simultaneously, whether that be a phone, tablet, headphones, smartwatch, or any other USB charged device. This perfect source for on the go power will help make sure you are at your best, no matter where you are POWER PROTECTION: All the power the portable battery provides is delivered to your device safely, with short circuit, overcharge, overdischarge and overcurrent protection standard in all Ventev power products LIMITED LIFETIME WARRANTY: Defects in the material and workmanship of the product are always covered so your mobile devices are properly protected