What is powerbank? Powerbank is a device used to put energy into a seconday cel or rechargeable battery by forcing an electric current throught it. Powerbank usually come with a USB cable. You connect it to a power source such as a laptop or power socket to charge the powerbank. You carry the charged up powerbank and the cable in your pocket, purse, backpack, briefcase or whatever and use it to charge the phone (using the same USB cable) when you see the battery meter sinking into zero.
Powerbanks are rated in mAh, just like the battery in your
cellphone. mAh is short for milliAmpere/hours. It's a measurement of the amount of
energy the battery can store. The one with 8400mAh can store double the amount
of energy that the one with 4200mAh can store. They have 70%
to 80% efficiency and the rest of the energy is lost to heat. This means, for
instance, that a 3600 mAh powerbank wouldn't completely fill your 3600 mAh phone
battery. Even a 4000 mAh unit would fall a bit short (do the multiplications -
even 0.80 x 4000 is less than 3600). On the other hand, you'll probably hook up
the powerbank before your battery is completely dead. It’s common to get the
biggest mAh for your powerbank, if it suite your pocket money.
User may be confused with various brands and type of
portable powerbank which are available in the market today if he or she is not
familiar with battery know-how. Do you know that powerbank is different from
one to another even though the battery capacity is exactly the same. It’s different
in terms of size, cell quality, compatibility, cell grade, pricing as well as
the internal safety design PCB circuits.
Safety is a concern as low grade power cells can be
exploded if over-charged. The current market today as we know it is full of low
grade powerbank with uncertain quality and uncertified safety measures, so it
is advisable that user give a think to opt for powerbank using 1st tier high
grade Lithium-Polymer battery due to its stable elements and safety assurance
as long as it is affordable. We don’t want our powerbank explode and harm our
gadget. Or in worst case scenario, harm ourself.
Overall, before purchased powerbank you need to
consider this criteria :
- Quality
- Safety
- Reliability
- Product design
- After sales service
If you have budget and concern about power depleted for your gadget......you need to buy powerbank as soon as possible. This tiny little thing will come in handy when you need it. Believe me, it’s worthy to own powerbank.
