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What you need to know about Power Banks

Safety is the key to choosing the right Power Bank

The main component of a power bank is a lithium ion / lithium polymer battery. Although these types of batteries are commonly used, the safety of battery product is always the utmost concern. Power Bank safety can be addressed on two fronts:  

1. Battery Quality Grade A is a general concept used to denote a very good quality battery. The real test is whether or not the battery has a UL Certification.  Though all our power banks have many certifications, our most popular power bank batteries have passed the UL 1642 test which is a set of rigorous Electrical, Mechanical, Environmental, and Fire Exposure Tests. UL is the most widely accepted certification that denotes a battery’s compliance with recognized safety requirements in North America.





2. Protective Circuitry The Protective Circuitry or PTC is considered a “ Safety Valve”. It protects the equipment, the charged device, and user. PTC prevents Internal and External Short Circuit, Abnormal Charge/Over Charge, forced Discharge, and more.   It’s easy to reduce the costs of power banks by cutting out the cost of battery certifications and protective circuitry. But doing so creates a tangible risk to the safety of the power bank, the phone and other charged devices, and even harms the user. Before you purchase a power bank, talk to your seller about their product safety certifications.

What does Power Bank Capacity mean?
Power Bank capacity refers to how much charge is inside a power bank battery. It is measured in mAh or milliamps per hour. When a power bank is charging a phone, some of the charge is lost in the transfer of power. In simple terms, it takes energy to transfer energy. So, the real capacity is about 62.9% of the battery capacity listed on the outside of a Power Bank that has a high quality battery. For example, a Power Bank with a quality battery at 2200mAh has a real capacity of 1380mAh. 820mAh is lost in the transfer of energy. For Power Banks with downgraded batteries, the real capacity is lower because the battery may not work as efficiently. For example, a downgraded battery may show 2200 mAh on the case, but the real capacity is actually much less than 1380 mAh.



Does a High Capacity Power Bank charge a phone faster than a Low Capacity Power
Bank?
The simple answer is No. The charge speed is determined by output current, not the capacity. The output current ranges from 500mA, to more than 1000 mA (1A).  If the output current stays the same, High Capacity and Lower Capacity Power Banks will charge a phone at the same rate. So theoretically, at the end of an hour, a phone will have as much charge with a High Capacity power bank as it will with a Lower Capacity Power Bank. A high capacity power bank will be able to provide more charge than a low capacity power bank over time. Business Class and Special Class Power Banks provide 1000 mA or larger output (up to 2 amps) and Economy Class Power Banks provide between 500 mA to 800 mA (up to 1amp). Most USB ports from your computer provide 500 mA (less than 1 amp).

How many times can a power bank be cycled?
Depending on the class / capacity, the power bank can be cycled between 300 to 500 timers. You may keep using the power bank but the capacity will be lower than the initial size. Be aware that it’s important to store a power bank with at least a 50% charge. Storing a power bank without any charge may reduce the life of the battery.



One simple but important reminder.
To prolong the battery life, factories only charge battery at 30% to 40% of capacity. Please remind to fully charge the power bank before usage or functions.

How do I prolong the life of my power bank?
Avoid storing power banks in extreme heat or cold environments. Always store your power bank with at least a 50% charge to prolong the battery life. Storing while completely drained will reduce the capacity of the battery. Keep power banks out of reach from children. Do not drop, break, or attempt to disassemble a power bank. Internal components can be harmful if exposed to skin.

Remember this procedure when you charge Power Bank via Car Charger

Avoid connecting a power bank to a car charger before starting the car. Many car chargers on the market may not be able to handle the sudden peak of output voltage during the vehicle ignition and it may damage the power bank.

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Common Problems About Power Banks Like Us on Facebook 1. Powerbank unable to charge my tablet? a) Powerbank with 2A output to charge tablets. While some tablets can accept lower input (1A or 1.5A), the charging is slower and sometimes can only be charged when the tablet is in sleep mode.
b) Some tablet is cables might not be compatible with power bank due to different cable chipset design. For Samsung Galaxy Tab in particular, we recommend using the cable and connector meant for power bank (comes with some power banks.




2. Powerbank battery drained off very fast? a) Generally, a well maintained powerbank can retain up to 80-90% of its original capacity. Please check your device (phone/ tablet) original battery capacity and the powerbank capacity. Please also see answer 1.a. above.
b) The number of times a powerbank can charge your device very much depends on the capacity of both the powerbank and the device. Examples of calculation shown in answer 2 above.
c) Please do not attach cables …
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If your wall charger doesn't appear to be delivering the goods, check that it's appropriate for your device. A charger from another phone might not deliver the right amount of juice — for example, a charger for a Bluetooth headset won't put out as much power as one designed specifically for smartphones. In the case of recent high-end phones, you might have a phone that supports fast charg…
Your buying guide for the best power banks in 2017

Your guide to the latest and best power banks of 2017. What is a best power bank? It should have some innovative function and it is just what you need. Phones get faster every year, but the more powerful they become the less their batteries can keep everything going. And, of course, all batteries will degrade over time. If you need extra battery power for your smartphone, tablet or other USB-powered device, you need a power bank. You might assume all power banks are much the same thing, but you would be wrong. You can get compact power banks that will charge your phone once, slightly larger portable chargers that might offer two or three charges, or high-capacity banks that can charge your phone in excess of 10 times! Working out how many times a power bank will charge your phone depends on more than the mAh rating on the packaging. No power bank is 100 percent energy-efficient, with every portable charger losing power through voltage c…