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What Is QC 3.0 Technology

Shenzhen Keyuantai Industry Co.,Ltd | Updated: Aug 25, 2017

Why is QC 3.0 better than 2.0? 

QC 3.0 compared to QC 2.0 is not a big jump, the power output is almost the same, the 8% gain is from increased charging efficiency.

It’s all about how the power is delivered to your device and less about the actual strength of the power; 2.0 Is stepped and violent, 3.0 is natural and smooth.

  • QC 2.0 multivoltage is fixed, 5, 9, 12 and 20V. This fixed voltage means the charging is done in voltage stages.

  • QC 3.0 can change exact voltage and can be anywhere between 3.6 and 20v, the charging is variable and this increases the overall efficiency of the charge.

quick charge 3.0 smartphone

Standard QC is 5V, QC2.0 Steps voltage at increments and QC3.0 has completely variable voltage across the range.

In the graph above (assuming charging current is kept identical); you can see the differences in the three charging technologies voltage output.

  • The advantage of 3.0 is that it can provide optimal voltage at the precise need of the battery, so during charging you are always at the fastest charging voltage.

  • 2.0 jumps in stages, less efficient but still enhances speed.

  • Standard fast charge stays at 5V and provides a slower charge.

This is the main difference of QC3.0. Or simply;

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