I bought 2 weeks ago a 10,000 mah battery pack from "EASYACC" it is quick charge 3.0 It is very compact and when you plug in the MXPE it has the "turbo charger connected" here is the link from amazon https://www.amazon.com/Qualcomm-Certified-Smallest-EasyAcc-10000mAh/dp/B01DXT7IR2/ref=sr_1_1?ie=UTF8&qid=1468251278&sr=8-1&keywords=easyacc+quick+charge+3.0

Chris