To ensure safe and stable charging, the phone’s temperature is kept under 40°C or 104°F (when in a constant 25°C or 77°F environment), courtesy of the charger’s built-in semiconductor cooling system (leveraging the Peltier effect) under the coils. This is apparently over 2°C or 35.6°F cooler than blowing air at the phone like many other fast wireless chargers do.
That said, there is also a fan in the charger’s base for both sucking air in from the charging plate’s top (thus dissipating the heat from the semiconductor system), as well as cooling the management circuit in the charger’s base, with hot air being exhausted from the back of the base. There are other safety measures such as foreign object detection, along with the usual five-fold safety protection from the VOOC tech.
In addition to its latest wireless charging breakthrough, Oppo also unveiled a 125W (20V/6.25A) flash charge tech (not based on VOOC at this rating; more on that later). This charges a 4,000mAh battery from zero to 41 percent in just five minutes, or from zero to 100 percent in just 20 minutes. It may sound less appealing than Vivo’s 15-minute charge with its 120W “Super FlashCharge,” but it’s still a whole 10 minutes faster than Oppo’s very own 65W SuperVOOC 2.0, which is already impressive with its 30-minute charge time.
Despite this boost in charging power, Oppo claims that this new “6C” battery will maintain an 80-percent capacity after 800 cycles, thanks to its upgraded structure and optimized charging algorithms. In terms of safety measures, this 125W flash charge design also keeps the phone temperature at under 40°C or 104°F, and this is monitored by a total of 13 sensors inside the phone (and one in the charger). Hardware encryption is in place to ensure that only certified cables can take in the maximum current available.
The new charger carries a USB Type-C interface (finally, a first for Oppo), and it also features three parallel charge pumps (each carrying 42W of energy) to convert the 20V/6.25A power to 10V/12.5A for the phone’s battery, with a conversion efficiency of up to 98 percent. Thanks to the tighter component integration and stricter temperature control, this charger is just slightly larger than the existing 65W SuperVOOC 2.0 charger.
Even though this charger only does PPS (Programmable Power Supply, a protocol by USB-IF) for the full 125W delivery, it is also capable of 65W SuperVOOC or 30W VOOC, both of which benefit from low voltage and therefore lower thermal properties. On top of that, you also get 65W USB-PD and 36W QC here.
Oppo didn’t stop there. The company also decided to work on miniaturizing its chargers, which resulted in this 50W mini SuperVOOC charger. Thanks to a new topological design sans bulky electrolytic capacitors, this new GaN charger comes in at around the size of a business card holder, so it can be easily put in a pocket. When used with a SuperVOOC-compatible phone, this device can fully charge a 4,000mAh battery in 42 minutes, which isn’t too bad. Better yet, this charger also supports other charging protocols like 27W PD and 50W PPS, meaning it can also charge some laptops and tablets.
The company also built a 110W version of this mini flash charger, which is impressive given that’s about the same size as a conventional 18W charger. Through PPS protocol, this device can charge a 4,000mAh battery in just 20 minutes, though it likely has a slower initial charging speed than the aforementioned 125W charger. Much like its 125W counterpart, this 110W charger is also compatible with Oppo’s very own 65W SuperVOOC and 30W VOOC, along with 65W PD and 36W QC.
There’s no word on when any of these charging tech will first appear on an Oppo product, but given previous patterns, chances are we will see a related announcement as soon as next month. Other ambitious smartphone brands may come up with something even better in the mean time, though, especially when we are expecting the next batch of 5G phones for this half of the year.