EC Technology® 2nd Gen 22400mAh Super-Capacity External Battery Equipped with 3 USB Ports of Intelligent Technology Portable Emergency Charger for iPhone 6, 6 more, 5s, 5, Air iPad 2, iPad Mini 3, 2, Samsung Tab S, 4, 3, 2, Galaxy S5, S4, S3, Nexus 6 and Other Android, Windows Smartphones and Tablets - Black & Red (Electronics)
After several tests, nothing to make that battery charging only 3 times my Nexus7 tablet of 4325 mAh (4325 x 3 = 12975) The calculation is simple mAh announced 22400 - 12975 mAh actual recharge 9425 mAh = missing. For me it is a 13000 mAh battery onl