Quick Charge 2.0 VS 3.0 | ZONSAN
Introduced in 2014, QC 2.0 marked a leap forward—boosting charger output to up to 18 W with support for 5 V, 9 V, 12 V, and even 20 V through high-voltage dedicated ports (HVDCP) . This was a game-changer for devices like Samsung Galaxy and HTC flagships.
Highlights:
·Connector-agnostic (USB-A, micro-USB, USB-C)
·Relied on fixed voltage levels
·Cut charging time by roughly 50% over standard chargers – fast, but limited
2 | ⚡ Quick Charge 3.0 Arrives—Smarter, Cooler, Faster
Launched in 2015, Quick Charge 3.0 introduced INOV (Intelligent Negotiation for Optimum Voltage), letting devices request exact voltage levels between 3.6 V and 20 V in 200 mV increments.
Benefits include:
·Up to 38% higher efficiency and 16% faster charging compared to QC 2.0.
·Charging devices 4x faster than old-school USB.
·Cooler operation—4–6 °C lower temperatures, preserving both battery and device health.
A typical QC 3.0 charger can deliver up to 36 W, almost double the 18 W typical in QC 2.0 setups.
3 | 🔄 Quick Charge 2.0 vs 3.0—Head‑to‑Head Comparison
In essence, QC 3.0 offers twice the power, greater efficiency, and cooler charging performance—making it the ideal pick for modern fast charger factories and B2B markets.
4 | 📋 Why OEM Charger Manufacturers Should Care
For charger factories and B2B buyers, offering QC 3.0-certified chargers provides:
·Superior power delivery (up to 36 W) vs older QC 2.0 models
·Cooler and safer charging—key for product lifespan and reputation
·Enhanced charging compatibility across devices and regions
·Competitive edge in fast charger supplier rankings and Google SERP listings
Pair QC 3.0 technology with GaN compact designs, PD compatibility, and full factory capability, and you're crafting a premium, future-proof fast charger lineup.
✅ Final Takeaway
·legacy devices, QC 2.0 offers reliable speed.
·Modern smartphones and tablets, QC 3.0 delivers better performance, efficiency, and compatibility.
·Brands and charger OEMs should give priority to QC 3.0 QC4.0, PD3.0, PD3.1, etc., and comply with CE, Rohs, UL, FCC, KC, KCC certifications.
Quick Charge 2.0 and Quick Charge 3.0 are both technologies developed by Qualcomm for charging devices such as smartphones, tablets, and laptops. Quick Charge 2.0 was introduced in 2014 and Quick Charge 3.0 in 2016.
Quick Charge 2.0 is capable of charging devices up to 75% faster than standard chargers, while Quick Charge 3.0 can charge devices up to 4 times faster than standard chargers. Quick Charge 3.0 also has some additional features, such as the ability to charge devices to 80% in just 35 minutes, and support for a wider range of voltages.
In general, Quick Charge 3.0 is a more advanced and faster charging technology than Quick Charge 2.0. However, both technologies are compatible with a wide range of devices and can be used to charge them quickly and efficiently.
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| Fearure | Quick Charge 2.0 | Quick Charge 3.0 |
| Voltage steps | Fixed (5/9/12/20V) | Advanced (3.6-20V in 200mV) |
| Max output | ~18W | ~36W |
| Efficiency improvement | Baseline fast charging | Up to +38% efficiency |
| Heat generation | Moderate | 4 - 6℃ cooler |
| Backwaeds compatibility | With QC 1.0 only | Fully compatible with QC 2.0 |
| connector compatibility | USB-A & micro-USB | USB-A, micro-USB, USB-C |
In essence, QC 3.0 offers twice the power, greater efficiency, and cooler charging performance—making it the ideal pick for modern fast charger factories and B2B markets.
4 | 📋 Why OEM Charger Manufacturers Should Care
For charger factories and B2B buyers, offering QC 3.0-certified chargers provides:
·Superior power delivery (up to 36 W) vs older QC 2.0 models
·Cooler and safer charging—key for product lifespan and reputation
·Enhanced charging compatibility across devices and regions
·Competitive edge in fast charger supplier rankings and Google SERP listings
Pair QC 3.0 technology with GaN compact designs, PD compatibility, and full factory capability, and you're crafting a premium, future-proof fast charger lineup.
✅ Final Takeaway
·legacy devices, QC 2.0 offers reliable speed.
·Modern smartphones and tablets, QC 3.0 delivers better performance, efficiency, and compatibility.
·Brands and charger OEMs should give priority to QC 3.0 QC4.0, PD3.0, PD3.1, etc., and comply with CE, Rohs, UL, FCC, KC, KCC certifications.
Quick Charge 2.0 and Quick Charge 3.0 are both technologies developed by Qualcomm for charging devices such as smartphones, tablets, and laptops. Quick Charge 2.0 was introduced in 2014 and Quick Charge 3.0 in 2016.
Quick Charge 2.0 is capable of charging devices up to 75% faster than standard chargers, while Quick Charge 3.0 can charge devices up to 4 times faster than standard chargers. Quick Charge 3.0 also has some additional features, such as the ability to charge devices to 80% in just 35 minutes, and support for a wider range of voltages.
In general, Quick Charge 3.0 is a more advanced and faster charging technology than Quick Charge 2.0. However, both technologies are compatible with a wide range of devices and can be used to charge them quickly and efficiently.
Call us today
OEM Phone Charger Recommendation
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