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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.




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