This blog is about power, why it’s important, how to get it and how to keep it.
It’s not about political power or the personal power to influence and control people.
It’s even more important!
It’s about portable power for recharging all those devices we have and depend upon in our daily lives…smart phones, mp3 players, digital cameras, tablets, etc. Those devices that seem to run out of power at the absolute worst time.
Portable power banks, (also called external battery packs, external back-up battery, external battery charger or power bank charger), are a very popular and well received promotional product. It’s easy to see why.
They’re very useful and practical…that means they’ll be retained. They offer a fairly good sized imprint area, so your logo can stand out and get noticed. And, pretty much everyone can use one. This is an item that every company should have in their promo product cupboard.
Here’s what you need to know before you buy:
These are portable, rechargeable lithium-ion batteries. They come in a range of capacities (with capacity being how much power they generate). The power capacity is measured in mAh, milli amps per hour.
Power banks range in capacities from around 1800 mAh on the low end up to 14000 mAh on the upper end.
Here is a 14000 mAh charger. It has 2 recharging ports and will power up pretty much any device. This one comes with multiple adapters to fit most every device. It will make your coffee in the morning. Expect to pay about $68 for a device like this.
Think of the charger as your gas tank. The higher the number the bigger your gas tank. And, like gas tanks, these batteries can be refilled, i.e. recharged. The typical power bank can be recharged about 500 times before it starts to lose its efficiency. (They come with a USB cable so you can recharge it from your computer.)
Think of your device as the gas pedal, the more you stomp on the pedal the faster your tank gets emptied. A smart phone will use less gas than a tablet.
So, how much charging will you get from a power bank? It depends upon the mAh capacity of the power bank and the size of the battery in the device. For instance, if your smart phone battery is 1500 mAh (which is pretty typical) a 2200 mAh power bank will charge it 1 time, (assuming your phone battery is at 0%). If your device has a 3000 mAh battery then the 2200 mAh charger won’t charge it completely.
Look at the output rating for the power bank you’re considering. 1A -1.5A is adequate for a smart phone while 1.5A -2A is recommended for a tablet. Although a tablet can be charged with a 1A charger, it will take longer and probably won’t charge the tablet completely.
This is a 4000 mAh dual port charger. This one offers 2 power output levels, 1A and 2A. It also features a charge indicator light.
Expect to pay about $25 for something like this.
Look for a charger with multiple ports (2 USB ports along with a micro is a nice feature.)
Look for a power bank that has fresh batteries…if the price is super cheap in comparison to other chargers of the same capacity it might mean that the battery has been used before and been refurbished. It happens.
An indicator light is a useful feature and a “use” indicator is an even nicer feature.
After that you can add features such as an LED flashlight, probably less than useful.
And lastly, do you want a plastic housing or an aluminum case?
This is a 2200 mAh charger with a metal casing. This has a single port and an indicator light. This is about $13.
The cylinder shape is quite popular. This is also a 2200 mAh charger. This one has a plastic casing. These are about $10.
Look at the links; they have a lot of the technical stuff. But, even if you don’t, you are now a much smarter buyer of power banks.