POWERBANK USING TIPS
PowerBank
Tips #1
Frequency of recharging a portable charger
A fully charged portable lithium charger can hold a charge for up to one year depending on its capacity. However, its energy level will diminish with time even if not used..
To get the most out of your portable charger, GP recommends recharging it to full every 90 to 120 days.
A fully charged portable lithium charger can hold a charge for up to one year depending on its capacity. However, its energy level will diminish with time even if not used..
To get the most out of your portable charger, GP recommends recharging it to full every 90 to 120 days.
Tips #2
Choosing the most suitable capacity
The capacity of the portable charger as stated on the packaging is for reference only. The usable capacity of all portable chargers is usually less than stated due to power loss of mild heat generation while charging devices.
To select a suitable portable charger for your device, you can use the following general formula to estimate which capacity best suits your requirements:
Your device’s capacity ÷ 0.7 = Portable charger capacity you will need
i.e. (3200 mAh ÷ 0.7) = 4500 mAh
For example:
If your device’s capacity is 3200 mAh, and you need to charge your device once a day, you should purchase a 4500 mAh portable charger that can supply one full charge of your device.
The capacity of the portable charger as stated on the packaging is for reference only. The usable capacity of all portable chargers is usually less than stated due to power loss of mild heat generation while charging devices.
To select a suitable portable charger for your device, you can use the following general formula to estimate which capacity best suits your requirements:
Your device’s capacity ÷ 0.7 = Portable charger capacity you will need
i.e. (3200 mAh ÷ 0.7) = 4500 mAh
For example:
If your device’s capacity is 3200 mAh, and you need to charge your device once a day, you should purchase a 4500 mAh portable charger that can supply one full charge of your device.
Tips #3
Choice between a slimmer portable charger and a higher capacity portable charger
Portable chargers come in various shapes, sizes, weights and capacities to suit different needs. Some are slim and light enough to slip into a pocket; others are heavier but with ultra-high capacity.
The size and weight of a portable charger usually increase as its battery capacity increases.
A larger portable charger:
Pros
A compact portable charger:
Pros
Portable chargers come in various shapes, sizes, weights and capacities to suit different needs. Some are slim and light enough to slip into a pocket; others are heavier but with ultra-high capacity.
The size and weight of a portable charger usually increase as its battery capacity increases.
A larger portable charger:
Pros
- greater capacity to charge more devices at the same time
- able to fully charge up a device for multiple times*
- bulkier and heavier
- longer recharging time
A compact portable charger:
Pros
- lighter in weigth, more convenient to a carry around
- shorter rechargeing time
- less capacity, only ideal for charging regular mobile devices
- you should select an appropriate portable charger based on your usage needs.
Tips #4
Calculation of recharging time for a portable charger
The following general formula* can help you to estimate how long it will take to fully recharge your portable charger.
(Capacity of battery ÷Input rated current) ÷0.8+ 1 hour = appropriate recharging time for your portable charger
For example:
If your portable charger’s capacity is 4500 mAh, it will take approximately (4500 mAh ÷ 1000 mA) ÷ 0.8 + 1 hour = 6.625 hours to fully recharge.
*This is an estimation only. Recharging time may vary under different conditions.
The following general formula* can help you to estimate how long it will take to fully recharge your portable charger.
(Capacity of battery ÷Input rated current) ÷0.8+ 1 hour = appropriate recharging time for your portable charger
For example:
If your portable charger’s capacity is 4500 mAh, it will take approximately (4500 mAh ÷ 1000 mA) ÷ 0.8 + 1 hour = 6.625 hours to fully recharge.
*This is an estimation only. Recharging time may vary under different conditions.
Tips #5
Safety assurance of a portable charger
Most branded portable chargers such as the GP PowerBank are equipped with built-in safety features that offer the following:
Most branded portable chargers such as the GP PowerBank are equipped with built-in safety features that offer the following:
- Protection against overcharging your portable charger
- Protection against over-discharging your portable charger when it runs out of battery, so your device will not be over-drain
- Protection against short-circuit malfunctioning
- Protection against extreme environmental high and low temperatures as well as potential safety issues to maximize your portable charger’s performance
- Auto stop discharging if it is overheat
- Auto stop charging if overvoltage occurs to prevent a different current from charging your portable charger
Tips #6
Consequences of overcharging a portable charger
Overcharging your portable charger may cause to overheat, which can result in potential safety issues.
To prevent these problems occurring, most branded portable chargers are equipped with advanced protection technology, such as an auto stop charging function, which prevents further charging while the battery is already full.
Overcharging your portable charger may cause to overheat, which can result in potential safety issues.
To prevent these problems occurring, most branded portable chargers are equipped with advanced protection technology, such as an auto stop charging function, which prevents further charging while the battery is already full.
Tips #7
Recharging a portable charger and charging a mobile device simultaneously
Most branded portable chargers can be recharged while simultaneously charging your devices.Moderate heat may be generated when this feature is being used.
If the temperature approaches to 50-60°C, the built-in high-temperature protection feature in portable charger will be activated. And that will shut down the portable chargers’ output function and reduce the risk of diminishing battery life.
Most branded portable chargers can be recharged while simultaneously charging your devices.Moderate heat may be generated when this feature is being used.
If the temperature approaches to 50-60°C, the built-in high-temperature protection feature in portable charger will be activated. And that will shut down the portable chargers’ output function and reduce the risk of diminishing battery life.
Tips #8
Ideal operation temperature for a portable charger
The optimum environmental temperature for recharging your portable charger is between 5°C and 35°C. Recharging your portable charger at temperatures out of this range may cause to diminish in battery life or malfunction.
Take good care of your portable charger by keeping it out of direct sunlight. Prolonged exposure to heat do harm on its performance.
The optimum environmental temperature for recharging your portable charger is between 5°C and 35°C. Recharging your portable charger at temperatures out of this range may cause to diminish in battery life or malfunction.
Take good care of your portable charger by keeping it out of direct sunlight. Prolonged exposure to heat do harm on its performance.
Tips #9
Reviving a portable charger
If you have not used your portable charger for a long time, it may not function immediately when you first attempt to reuse it. You can revive it by recharging it for approximately an hour*.
If your portable charger still does not respond, you may need to replace it with a new one.
*This is an estimation only. Revival time may vary for different portable charger models under different conditions.
If you have not used your portable charger for a long time, it may not function immediately when you first attempt to reuse it. You can revive it by recharging it for approximately an hour*.
If your portable charger still does not respond, you may need to replace it with a new one.
*This is an estimation only. Revival time may vary for different portable charger models under different conditions.
Tips #10
Definition of watt hours (Wh)
The watt-hour (Wh) is a unit of energy. It is commonly used by some brands of portable charger as an alternative unit of milliamp hour (mAh) to indicate battery capacity. Wh is also commonly used among different airlines to determine whether a portable charger can be carried by air or not.
You can use the following formula to convert between Wh and mAh:
Device’s capacity in mAh x Voltage in V = Device capacity in Wh
For example:
If the capacity of your portable charger is 3200 mAh with 3.7 V, its capacity in Wh would be :
3200 mAh x 3.7 V = 11.84 Wh.
The watt-hour (Wh) is a unit of energy. It is commonly used by some brands of portable charger as an alternative unit of milliamp hour (mAh) to indicate battery capacity. Wh is also commonly used among different airlines to determine whether a portable charger can be carried by air or not.
You can use the following formula to convert between Wh and mAh:
Device’s capacity in mAh x Voltage in V = Device capacity in Wh
For example:
If the capacity of your portable charger is 3200 mAh with 3.7 V, its capacity in Wh would be :
3200 mAh x 3.7 V = 11.84 Wh.
Tips #11
Portable charger limit on flight
It is essential to know the maximum capacity* of a portable charger allowed in airline’ carry-on baggage. This is usually limited to a rating of 100 Wh per portable charger and it allows for nearly all types of lithium portable chargers ( per passenger per bag).
For example:
If the capacity of your portable charger is 74 Wh (20000 mAh with 3.7 V), it should be safe to take on a plane.
Reference of Cathay Pacific:
http://www.cathaypacific.com/cx/en_HK/travel-information/baggage/controlled-and-banned-items/lithium-batteries.html
*The capacity limit for portable chargers may vary according to airline. It is strongly recommended that you check with respective airline before travelling. Details can be found on each airline’s website under Travel/Baggage Information.
It is essential to know the maximum capacity* of a portable charger allowed in airline’ carry-on baggage. This is usually limited to a rating of 100 Wh per portable charger and it allows for nearly all types of lithium portable chargers ( per passenger per bag).
For example:
If the capacity of your portable charger is 74 Wh (20000 mAh with 3.7 V), it should be safe to take on a plane.
Reference of Cathay Pacific:
http://www.cathaypacific.com/cx/en_HK/travel-information/baggage/controlled-and-banned-items/lithium-batteries.html
*The capacity limit for portable chargers may vary according to airline. It is strongly recommended that you check with respective airline before travelling. Details can be found on each airline’s website under Travel/Baggage Information.
