Power Bank- Mobile Charger

I want to buy a power bank to charge my mobile devices, but I’m confused about the technology, brands and pricing. Need your help urgently to help me make a right choice.

Before you buy a powerbank ­ aka portable battery charger ­ check for the mAh capacity mentioned on your smartphone battery or the specs in your mobile’s manual (in the case of non-removable batteries). For instance, if your device has a 2000mAh battery capacity, buy a power bank with at least 2500mAh. If you buy a 4500mAh model, it means you can charge your 2000mAh phone at least twice. In any case, opt for the highest capacity that your budget allows.

Also check `current draw’.Older phones do not draw more than 1 Ampere to charge their batteries. However, newer handsets and tablets need a 2.1 Ampere input current. Check your mobile’s original plug for details on current draw. If possible, buy a powerbank with two USB ports ­ 1A and 2.1A. Remember: when it comes to charging your gadgets, current draw is more important than capacity.

Essentially, pay attention to the type of cells ­ Lithium-ion or Lithium-polymer ­ used in the power bank. Li-ion is cheap and easily available. Li-poly cells, on the other hand, are more expensive, but provide twice as much charge density per unit weight.

power bankEnsure that you buy from a reputed brand. Lowquality lithium-ion power banks not only effect performance, but are also a potential hazard. Many times, cheap battery packs ­ the type available on the streets ­ do not list the correct mAh capacity or the proper current draw. These batteries could also explode due to heating from over charging. For improved safety and performance, buy a model that comes with over voltage protection (OVP), over charge protection (OCP) and over-temperature protection (OTP) that ensure its longevity against spurts in current, and over heating during charging and discharging. Consider…

Mi Power Bank (`999) | 10400mAh | L-ion | 2.1A (and 1A through single USB) | OVP, OCP and OTP

Adata PV110 (`2,450) | 10400mAh | Li-ion | 1A and 2.1A | OVP, OCP and OTP

Portronics Charge 2 (`2,900) | 12000mAh | Li-ion | 1A and 2.1A | OVP, OCP and OTP If you’re looking for something over and above a plain power bank, look at the…

Adata DashDrive Air AE400 (`4,500) | This device comes with a 5000mAh battery to recharge your devices. Besides, it can connect to existing wireless networks and create an internet bridge connection for up to 10 other devices. You also get a USB port that takes input from pen drives and hard drives, as well as a MicroSD card slot, allowing you to share this storage wirelessly.

JBL Charge (Rs.6,500) | This is a Bluetooth speaker that boasts of a 12-hour playback time and frequency range of 150 20000Hz. Why is it listed here? Its 6000mAh Li-ion battery can also charge your smartphones via its USB port