ProductDetails. The 4,000 mAh Endurance AC by Pocket Juice is the powerful portable charger that provides a stable power supply and conveniently keeps your iPad, tablet, iPhone, smartphone and more charged up and ready to go. Our Patented QuickChip technology makes for a faster and safer charge. Never be out of power with the Mostwireless earbuds have battery capacities ranging from 50mAh to 200mAh per earbud. With an 8000mAh power bank, you should be able to charge your wireless earbuds multiple times, potentially up to 40 charges or more, depending on the specific model and battery capacity. ThePep 4000 mAh Power Bank has a lightweight rechargeable lithium polymer Grade A battery for charging smartphones, MP3 players, and other devices. This reusable power bank charges via an included USB-A to micro cable. This cable can be used to recharge the battery backup or to charge devices with a Micro-USB input. Sohere is my rule of thumb: a portable power bank will deliver about 2/3 of its advertised mAh capacity. So if you have a 3,000 mAh phone, you multiply by 3 (giving 9,000) and then divide by 2 Thecharge stored in the power bank is the product of its mAh (or Ah) rating and terminal voltage. Since the terminal voltage in both cases is the same, i.e., 3.7 volts, the mAh directly defines how much power the power bank can supply. In the case of 1000 mAh and 2000 mAh power banks, the latter can store two times more power than the FrequentlyAsked Questions. List of the Top Power Banks in India. Comparison Table of the Best Power Bank. #1) Mi Power Bank 3i 20000mAh. #2) URBN 10000 mAh Li-Polymer. #3) Ambrane 15000mAh Li-Polymer Powerbank. #4) Syska 20000 mAh Li-Polymer. #5) OnePlus 10000mAh Power Bank. #6) pTron Dynamo Pro 10000mAh. So if your phone battery has a capacity of 4,000 mAh you would need a power bank with twice the capacity (8,000 mAh) to charge your phone completely charge one time and Thebright LCD screen shows you how much power remains in the power bank so you always know how much power you have. High Capacity. 30,000 mAh ultimate power capacity that can charge a standard smartphone up to 9 times, giving you an extra 108 hours of time. Triple Outputs. This power bank includes two USB 2.1A outputs and one Description Give your battery a boost with the rechargeable 4000 mAh Power Bank from heyday™. Featuring a fast, 2.1 amp output and a micro USB charge cable, this compact and lightweight power bank lets you charge your phone, tablet or e-reader anywhere; no wall outlet required. heyday™: Let your style speak volumes. DUw16.

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