Smartphones are used for different applications other than calling. It is used for internet surfing, listening to music, watching videos, photography, and various other apps. Therefore the phone battery drains early and needs to be changed frequently. But this battery charging becomes difficult when you are traveling or away from a charging point. This problem can be resolved by having an additional source of power such as the Best Power Bank with you.
The Power bank stores electrical energy and supplies to your devices whenever required. It is used to recharge electronic devices like smartphones, Tablets, MP3 players, digital cameras, Laptops, etc.
Top 5 Best 10000mAh Power Bank in India
1. Anker Power Core 10400mAh 
Product Dimensions: 9.7 x 8 x 2.2 cm, Weight- 240 g
Battery- 10400 mAh / 38.48 wh.
This High Capacity power bank can charge your iPhone 6 four times, the iPhone 6 Plus or Galaxy S6, two and a half times, or the iPad Air almost once.
It has 2 USB output ports- 5V / 3A. A combination of PowerIQ and VoltageBoost produces the fastest charge up to 2.4amps per port or 3amps overall.
Input- 5V / 2A. It can be safely recharged with a 2 amp output charger.
Compatible with the 12 inch MacBook, 2015 (required USB-C cable), Android & Apple smartphones, tabs, and other USB-devices except for the iPod nano, iPod Classic, ASUS tablets, HP TouchPad, Dell Venue 11 Pro, some other GPS & Bluetooth devices.
Impact, vibration, and extreme temperature tested.
It has a MultiProtect Safety System such as surge protection, short circuit protection.
It also features LED indicators for charge status indication.
Warranty of 18-month.
2. SYSKA Power MAX 100 
Product Dimensions:9.4 x 6.4 x 2.3 cm, Weight- 181 g
Battery- 10000mAh Li-Polymer Battery, 37Wh Capacity. Energy density Polymer cell, Lightweight & Durable.
It has 2 USB output ports to charge two devices at 2.4A power output simultaneously.
Micro USB Input: DC 5V=2A.
It is compatible with Smartphones, Tablets, Bluetooth Headsets, Portable Speakers, and similar devices.
It is compact in size and Pocket Handy.
Advanced safety features like Current Shunt. Overcharging and Discharging protection.
Designed with precise IC protection that avoids over-charging, over-discharging and short circuits that can shorten the life and damage your device.
Warranty of 6-Months
3. Samsung EB-P1100BSNGIN
Product Dimensions:1.4 x 7.1 x 14.2 cm, Weight- 222 g
Battery- 10000mAh lithium-ion battery.
This power bank has Dual USB output ports so that you can charge two devices at a time.
Input – 5V-2A
Compatible with all smartphones and tabs which support USB 3.0 ports.
The body is metallic, sleek design and easy to carry while traveling and outings.
Output Overcurrent Protection (OCP) ensures safe charging, without worry about an excessive current levels that can damage your device.
1-year manufacturer warranty
4. iBall PB10107 10000mAH
Product Dimensions:14 x 6.3 x 2.15 cm , Weight- 240 g
Battery- 10000 mAh Lithium Polymer
Dual USB Output can charge two phones simultaneously. Gives the output of 5V / 2.1A (Single Charging – 2.1 A and Dual Charging – 1 A on each port).
Input- 5V / 2A
Compatible with Tablets, Bluetooth Headsets, Portable Speakers, and similar devices.
The body is made of ABS with an elegant design.
Multi-protection safety from over-discharge, over current, over-voltage, and short-circuit.
Digital LCD Displays battery percentage, output port indication, etc.
Battery Charging Time- 6 ~ 7 hours (Using 2A USB Charger).
Warranty- 1-year warranty
5. Stuffcool Type C 18W 
Product Dimensions: 13.5 x 7 x 1.35 cm , Weight- 230 g.
Battery- 10000mAh lithium-polymer.
2 Quick charge 3.0 USB output. The Type C port gives a constant output of 3.0A at 18W.
It has Quick charge 3.0 micro USB input to completely charge the power bank in less than 4 hours.
It has 2 input methods, one by using a standard Micro USB and another by using a Type C Cable. Using a Type C Cable lets you charge the power bank at 3.0 A compared to 2.4 A using a Micro USB Cable, and that charges the power bank quicker.
Supports charging with Type C Android Phones like Google Pixel 2/2XL, Pixel 3/3XL, Samsung Galaxy S9/S9+, Note 9.
Built with an Aluminum body with a slim design.
Smart IC safety feature gives complete protection against overcurrent and overvoltage and is BIS certified.
LED indicator.
18W Power Delivery with fast charging technology. supports the latest iOS / Apple and Android / Google devices, that deliver much higher power than normal 5/10W charger.
1-year manufacturer’s warranty.