Gone are the days when our Nokia 3315 or Nokia 1100 needed not much amount of charging. We used to plug it in to charge once in a week, and it would give long battery life. Now, everything going portable – what with laptops, mobiles, tablets and many more – even our chargers have gone portable. The portable chargers, which are known by the name of Power Banks, have been a rage these days. With our smartphones and other devices becoming our constant partners, and a complete dependence on them for all our needs including but not limited to communication, entertainment, business and what not – we need them to last at least a day. And that’s where the power banks have become a necessity. Power banks are portable energy source that can be easily carried in a pocket or backpack and provides smart phone and tablet users additional power when their devices are running low.

Unfortunately, most of us do not know what is a power bank and how it works. Even the manufacturers or sellers do not feel the need to educate the buyers on this necessary information. There are some points to be taken care of while choosing a good power bank depending on your device. Pondering over these aspects, I felt the need to compile details of such precautions and technicalities and the result is this article.

What Are Power Banks

Power banks store energy in an internal Lithium Ion battery and can charge the mobile and tablets. They are nothing but a special battery encased in special casing along with required circuitry to control the flow of power. That’s how I can explain them in a non technical manner. They store the energy in them just like you deposit money in the bank and have a means to charge a device like you withdraw money! That is the perfect analogy. Now that the battery capacity of the devices we are using these days has gone too low what we have been expecting it to with a myriad of tasks being performed, there is a need for an auxiliary power supply and that’s where these power banks come into action.

Choosing a power bank

These are some basic guidelines on what kind power banks to buy. It all depends on your individual requirement. If you have the habit of carrying too many devices while on travel, you may need to get yourself a high capacity power bank. Else, a low capacity portable charger would be sufficient. Her are a few tips based on the major points –

Capacity: This is the most important deciding point in choosing a right power bank. Power Bank capacity refers to how much charge is inside a power bank battery. It is measured in mAh or milliamps per hour. But one thing you need to understand that when a power bank is charging your smart phone or tablet, some of the energy is lost in transfer of power. So the real capacity is about 60-65 percent of the battery capacity listed on the power bank. For example a power bank with battery capacity at 2200 mAh has real capacity in the range 1320mAh to 1430mAh. And this is for quality battery, for downgraded battery the loss of power is even more and hence the real capacity would be less than 1320mAh. Should you decide to buy a power bank, keep your own usage in mind. To meet ever growing charging needs of users, many higher mAh units are available today. Higher end power banks can charge almost any type of devices, from laptops, iPads, tablets and smart phones.

Connectors: Pay specific attention to the number of connectors and the type of connector. It would be more advisable to go for a power bank with built-in cable.

Portability: We are buying a power bank because of its portable nature. If you have to carry a huge power bank than your device, it is too impractical.

Price: Power banks which promise higher capacity at a substantially lower price may not be genuine. Most of them use refurbished battery and may not last long. Go for a power bank from a well known brand. Though it may be a bit expensive, it will keep your device safe and give the required performance.

Protective Circuitry: Ensure that your power bank has additional features to protect your device. Pay attention to following –

  • Short Circuit Protection – This will help keep your power bank and the device safe when the short circuit problems happen.
  • Over Charging Protection – This feature will let the power bank cut off the supply when your device is charged fully. Thus, it will be useful in cases of the device being left for charging and forgotten.
  • Temperature Protection – This will help identify the cases of device overheating while charging the device.

Certification: Check for the UL certification of the device. It will ensure that the power bank you have been buying meets all standard quality requirements.

Best Power Banks in India 2017

As there are many brands and models of power banks available today, choosing the right power bank may be a difficult task for you. Here are the best power banks available in India.

Anker Astro3 79AN7904-BA 12000mAH 2nd Gen Power Bank
Anker Astro3 79AN7904-BA 12000mAH 2nd Gen Power Bank
The new 2nd Gen power bank from Anker Astro 3 is by all means a best in class device. In spite of being a powerhouse with 12000 mAh capacity, it is surprisingly comfortable to handle. It has 3 outputs providing you an impressive 4A of current. Physical dimensions of the device read 110 mm x 83 mm x 26 mm and it weighs around 299 grams.

Anker Astro 3 also has a good safety measure in-built into the device which determines speed and optimises the current according to the devices connected to it. It features a 10 segment indicator. Such a design allows you to get a precise reading. As a smart innovative feature, you just need to shake the power bank to get the LED turn on!
The power bank actually provides an actual capacity of 10440 mAh, though the rated capacity is 12000 mAh ( In fact, the rated capacity is the total capacity of the batteries inside, which tend to loose around 30% of power during conversion).
It has smart port which identifies the device by detecting USB pin signals. It has the capacity to charge normal devices upto 6 to 7 times.
Compatibilty – Google Glass, iPhones, iPads, Samsung Galaxy Tablets, other Android Smartphones and Tablets

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EasyAcc 10000mAh Ultra Slim Dual USB Portable Power Bank
EasyAcc 10000mAh Ultra Slim Dual USB Portable Power Bank

EasyAcc 10000mAh Ultra Slim Dual USB Portable Power Bank is a colorful and sleek power bank charger that allows you to utilize your smartphones more extensively or for prolong periods of time. This power bank is compact and can easily fit into bags, cases or even in your pocket. Product dimension is 5.2 x 2.8 x 0.64 inches and weighs about 240g. The power bank charger has two USB ports, each USB port is different since they do not have the same specifications in terms of output. One USB ports has an output of 1.5 A which is ideal for small to medium devices. The second USB port has an output of 2.1 A.


  • A unique look that will let you stand out from the crowd: More than just a power bank, it s colorful.
  • Compact design, super portable, easy to hold in your hand and put anywhere your want, e.g. a pocket or a bag.
  • 10000mAh rechargeable power capacity, giving your phone enough juice to keep it running (5-6 times full charges to your iPhone 5 or 2.5-3.5 times charges for Samsung Galaxy S4, S3).
  • Dual USB output: Charge two smartphones or an iPad at full speed (USB Output 1: 5V 2.1A, USB Output 2: 5V 1.5A); advanced power lock technology with standby time of up to 6 months once fully charged.
Buy On Amazon

PNY BE-740 10400mAH Power Bank
PNY BE-740 10400mAH Power BankDeveloped by PNY Technologies from New Jersey, USA – the PNY BE-740 10400mAH Power Bank has a capacity of 10400 mAh. With its ergonomic design, it easily fits into your palm. The device is guaranteed to be consisting of non-recycled batteries. It also comes with safety protection.

Physical dimensions of the device are 140 x 25 x 51 mm and it tilts the scales at 136 grams. This power bank is equipped with 8 safety features including overcharge protection, over current protection and short circuit protection among others. It comes with four high efficiency LED indicators that help you keep track of the battery level. As an auxiliary application, it carries a handy built-in LED torch. The device comes with additional safety measures insulation safety. It has a unique cylindrical design that is comfortable in handling.

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RAVPower 3rd Gen Deluxe 13000mAh
RAVPower® 3rd Gen Deluxe 13000mAhThis one has a dull polished look to it. It takes around 2 to 3 hours to charge fully. The power bank comes with a set of cables – short and long micro/mini cables and tips for 30 pin Samsung and Mini-B USB. It carries 2.4A and 2.1A ports. Physical dimensions of the device are 127 x 81 x 22mm. The device weighs about 306 grams. The RAVPower 13000mAh deluxe battery is the complete package. It carries everything you need for all your USB charging needs. It’s really rare to have an external battery without any issues, but this battery really has it all.

This power bank has very high efficiency rates probably higher than any other power banks in this range. Stylistically one of my favorite battery styles with its curved edges, and black with silver trim. RAVPower battery is effective and portable. It is a bit on the high end in terms of the price, but not unreasonably so. I think that the extra price in this case might well be worth it. I would recommend it to anyone who travels a lot or uses their gadgets on the go all the time.

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ADATA PT100 10000mAH Power Bank
ADATA PT100 10000mAH Power Bank ADATA has signed a tie up with Amazon India to market this awesome power bank. It features dual USB ports. The capacity of the device reads 10000 mAh. It also carries a USB flashlight.

With its stylish and ergonomic design, the ADATA PT100 is a pleasure to carry along. It has multiple safety standards incorporated. It does have ODP – Over Discharge Protection, SCP – Short Circuit Protection, OCP – Over Current Protection, OVP – Over Voltage Protection and OCP – Over Chage Protection. It also features a sensor that sends the device into hibernation mode if does not find any devices connected to it, thereby saving power.
Another unique feature of the device is that you need not press any button to commence charging, just connect your device and it commences charging. Physical dimensions of the device are 14 x 2.2 x 6.3 cm. It tilts the scales at 286 grams.

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Targus APB031AP-50 8400mAH Portable Dual USB Portable Power Bank
Targus APB031AP-50 8400mAH Portable Dual USB Portable Power BankTargus has long been a player in the field of mobile computing accessories, and this entry into the power bank field keeps their reputation alive with solid performance. Featuring 8400 mAh of battery capacity, the battery provides users with an additional 5 to 10 hours of use on iPad and can fully charge a Smartphone 5 times on a single charge. The Targus portable dual USB power bank is a 5.0 V, 2.1A dual USB output battery that allows you to charge your iPad/tablet and smartphone together whenever extra power is needed. This power bank is also compact in size and weights about 186 gram. Targus powerbank is one of the most solidly constructed power banks in the market. It’s made out of really good plastic that feels durable. Targus also clearly did a good job with its aesthetics.

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Lenovo PA13000 13000 mAh Powerbank
Lenovo Power Bank PB410 5000mAhLenovo PA13000 13000 mAh Powerbank has sturdy build and a premium looking metallic design. With a premium look the device is quite comfortable to handle. It features 4 LED indicator to help you check the charge remaining. It has two ports which can charge two phones simultaneously. The device comes with Over Charging protection which helps you keep the device safe. Physical dimensions of the unit are 14.1×6.4×2.2 cm. It tilts the scales at 281 grams. The device also features auto shut off when no unit is connected. This helps in preserving the battery charge.

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For more power banks check out this below table.

Power Banks name/model Picture (click to view more details or to purchase)
Capacity – measured in mAh (higher the capacity, more the number of times it can charge your mobile)
No of Ports – Number of ports
Rating – Average user rating (out of 5). A helpful statistic in determining if people are satisfied with the Product.
Price – These are approximate price ranges. Since they change frequently based on availability, promotions, and more. For current price click on buying option
Buying Option – Place where power bank can be brought at discounted price

Power banksCapacityBattery TypeNo. of PortsRatingBuying Option
Romoss 10000mAH Power Bank Charger
Romoss 10000mAH Power Bank Charger
10000Lithium-Ion14.0Buy On Flipkart
Buy On Amazon
Lenovo Powerbank 10400 mAh
Lenovo Powerbank 10400 mAh
10400Lithium-Ion13.5Buy On Flipkart
Buy On Amazon
PNY BE-520 5200mAH Power Bank
PNY BE-520 5200mAH Power Bank
5200Lithium-Ion14.2Buy On Flipkart
Buy On Amazon
PNY BE-740 10400mAH Power Bank
PNY BE-740 10400mAH Power Bank
10400Lithium-Ion14.5Buy On Flipkart
Buy On Amazon
Wayona W4 7000 mAh Ultra Slim Power Bank
Wayona W4 7000 mAh Ultra Slim Power Bank
7000Lithium-Polymer13.8Buy On Amazon
TP-Link TL-PB10400 10400 mAh Portable Power Bank
TP-Link TL-PB10400 10400 mAh Portable Power Bank
10400 Lithium-Ion24.1Buy On Flipkart
Buy On Amazon
Vinsic Tulip 6000mah Power Bank
Vinsic Tulip 6000mah Power Bank
6000Lithium-Ion14.3Buy On Amazon
EasyAcc 10000mAh Ultra Slim Dual USB Portable Power Bank
EasyAcc 10000mAh Brilliant Ultra Slim Dual USB (2.1A / 1.5A Output) Portable Power Bank
10000Lithium-Ion24.1Buy On Flipkart
Buy On Amazon
ihave ia1310 Boss 10000mAH Power Bank
ihave ia1310 Boss 10000mAH Power Bank
10000Lithium-Polymer14.1Buy On Amazon
4000Lithium-Ion13.5Buy On Amazon
Asus Zen Power 10050 mAh
Asus Zen Power/Black
10050Lithium-Ion14.0Buy On Flipkart
Buy On Amazon

Is it safe to use Power Banks?

Though the power banks have proved to be most crucial due to the kind of services they offer, there are some disadvantages associated with their usage. For that matter, anything we use has its own set of advantages and disadvantages.


  • You can have the flexibility of using it when power supply is down.
  • Since these gadgets are high powered, they take less time to charge your devices than the normal chargers.
  • They can be used to charge your devices from whatever that has a USB port. It means you can charge your devices anywhere – in car, from PCs etc.
  • They are portable.
  • They are universal in nature. You do not need to maintain separate chargers for individual devices.


  • They are expensive.
  • To some, power banks may appear to be an extra burden while traveling.
  • Using your device while charging through them is a bit tricky because of shorter cable length.

Power Bank Trouble shooting

Power bank does not charge my device: If you are trying to charge your tablet, you should use 2A port. Most of the tablets do not charge via 1A port.

Power bank battery drains very faster: Do not keep the cables attached to the power bank when not in use. Such a practice generally drains battery. Recheck the battery capacity of your device and power bank you are using. Remember to use correct connectors to avoid loss of charge.

Power bank does not turn on:Your power bank might have drained out fully. Put ot to charge and check whether it charges and then try switching it on. Some power banks go into sleep mode in case of overcharge/overdischarge/short circuit. In most of the cases, this happens due to faulty cables. Replace cables and check.


Well, as it can be seen from above discussion, a power bank is an essential additional gadget these days. I just hope I have been of help in addressing most of your concerns regarding them. If you have any query about the concepts explained, or any additional information to share on the topic, please feel free to respond to this article.

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