December 15, 2014 by Abhay
A power bank is a portable charger, which allows you to charge your mobile phone or tablet on-the-go with the help of it’s own rechargeable battery.
What All to Consider When Buying a Power Bank?
1. Personal Requirement
Which power bank to buy entirely depends on your requirement. If you wish to buy it only for your mobile phone, go for a smaller one. A tablet usually requires a higher capacity power bank.
2. Capacity of the Power Bank
The battery capacity of common devices are:
Apple iPhone 6: 1810 mAH
Apple iPhone 6 Plus: 2915 mAh
Apple iPhone 5S: 1560 mAh
Samsung S5: 2800 mAh
Xiaomi Mi3: 3050mAh
Xiaomi RedMi: 2000 mAh
LG Nexus 6: 3220 mAh
LG Nexus 5: 2300 mAh
Motorola Moto X (II): 2300 mAh
Motorola Moto G (II): 2070 mAh
Motorola Moto E: 1980 mAh
OnePlus One: 3100 mAh
Capacity of a power bank is measured in mAh (milliampere-hour). The power banks are usually available in the following capacities – 2600 mAh, 5200 mAh, 10400 mAh and more.
The higher the capacity the more number of times it can charge your device. It also takes a longer time to charge a high capacity power bank.
If you are buying only for your mobile phone, go for a 5200 mAh power bank. Tablets require a minimum of 10400 mAh power bank so that they can be charged around 2 times.
A fully charged 10400 mAh power bank will charge a 3200 mAh device around 2 times because some amount of energy is lost in the charging process and the complete energy is not transferred.
3. Capacity to Size Ratio
A higher capacity power bank is more bulkier. Make sure you keep the correct balance of capacity and size because a power bank is meant to be portable and should be easy to carry.
4. Output Voltage & Current
If you’re buying the power bank for your tablet or a high capacity mobile device, make sure it gives atleast 5V/2.1A. Such an output will also charge your device at a faster pace.
Charging a high capacity device with a 1A output will take hours to get fully topped up.
5. Number of Outlet Ports
If you have multiple devices, go for a power bank with more number of outlet USB ports
6. Battery Level Indicator
A battery level indicator is a must in a power bank. This will help in avoiding those days when in case of emergency, even your power bank is out of juice.
Please note that a new power bank requires atleast 2-3 charging and discharging cycles to make use of maximum capacity. So don’t worry when your new power bank gets fully discharged on charging your device for the first time.
Most popular power banks available in India are:
Pros: Most popular, Good pricing, Sleek and Looks Good, Higher output (2.1A/5V)
Cons: Many duplicates available in the market, Slightly Low Conversion Efficiency
Pros: Dual Output USB Ports, Higher output (2.1A/5V), Battery % Indicator
Cons: Bulky, Slightly Expensive
Pros: Fast charging, Higher output (2.1A/5V), Dual Output USB Ports
Cons: Expensive, Low Conversion Efficiency
Pros: Brand Value, Design
Cons: Low Output, Very Expensive
Pros: Size and finish
Cons: Low Output Voltage, High Price
Pros: Good Pricing, Fast Delivery
Cons: Poor built quality, Poor Compatibility with iPhone
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