跳至主要内容
Using USB Chargers Safely(2)

Types of USB ports
Heloidoe Smart USB Cable for Android/IOS 


There are three types of USB port dictated by the actual current specs (milliamps or Ma).

Dedicated charging port

A dedicated charging port applies to power sources like wall chargers that do not enumerate, so charging occurs with no digital communication at all.

Downstream port

A charging downstream port can be found on a computer or laptop and can supply up to 1.5A, whilst allowing a USB to be detected and begin charging before enumeration (which is when the digital communication takes place).

Standard downstream port

A standard downstream port can be found on a computer or laptop and needs to enumerate (start digital communication) to be USB compliant, however most present-day hardware does draw power without enumerating.

Heloidoe Smart USB Cable for Android/IOS 


Voltage and Amperage

Not all USB connectors, cables and chargers are equal. For example, some wall chargers can supply more power than others and one particular USB socket on a laptop may vary in power from the others, or PCs with some able to charge whilst in sleep mode.

You will also need to consider Amperage.Chargers increase the current to provide a higher amount of power quickly – this is measured in amps and the more amps means the more power. Therefore, a charger that comes with a smartphone will provide less amps than a charger that come with a tablet. You will need to consider voltage and the equipment you’ll need to use to enable the use of USB chargers when travelling internationally.

Heloidoe  Selfie stick with power bank and Smart USB Cable for Android/IOS 


Safety Concerns

Uncertified chargers come with serious safety concerns. Similar to unofficial batteries, uncertified chargers can be bought at a reduced price online, from overseas or in high street shops and these kind of electrical products may present a higher risk of exploding or catching fire. Not only do they present a risk to you, the use of uncertified chargers may also damage your phone (which in turn could void your guarantee).

Cheap devices often fail to meet the requirements of the Electrical Equipment Regulations Act 1994. The money that you save comes with extremely high risks and therefore buying a branded/certified charger is essential to avoid often fatal repercussions.




评论

此博客中的热门博文

Dos and Don’ts When You Use a Power Bank  Like Us on Facebook Modern gadgets are power hungry. Our increasingly busy lives mean a dead battery can leave you disconnected from life, work, and your daily routine. Portable chargers and power banks will keep you from getting stranded when you’re on the go and without a convenient charging source. They are ideal for recharging your smartphones and similar devices wherever you are when you find yourself low on power.


As with all electrical and electronic devices, it’s important to treat them with respect and care to ensure they continue to work properly and safely.
With this in mind, we advise you to think about some general Dos and Don’ts to help keep you safe when using power banks and portable chargers:




1. Do use the power pack only for its intended use. E.g. to recharge your mobile phone or other USB powered mobile devices. 2. Do keep away from heat sources and liquids - direct sunlight, humidity or water. 3. Do only use connecting cables prov…
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 …
Don’t Buy Power Bank Before You Read This
1) What’s power bank? Power bank serve as an ‘extra battery’ or external charger for your phone or other electronic devices.
2) Where is power bank made from? Majority of the power banks in the market are actually made in China.
3) How long do I need to charge the power bank? It’s depending on the REAL CAPACITY of the power bank. The larger REAL CAPACITY, the longer charging time may required. Different charging methods may result different charging time as well. Charging with the original charger will be faster than charging with computer usb port.
4) Why sometime I need longer time to charge the same power bank? Even though using the same charging method, the charging time may be differ due to environment,temperature, power flow and etc.
5) What’s conversation rate? Conversation rate is the remaining percentage of the battery after the battery lost in heat or PCB operation.
6) What’s phone battery health? In simple, it’s mean how‘healthy’ your phone bat…