Earlier this week, OPPO revealed a bunch of new developments in its Flash charging technology at the OPPO Flash Charge Open Day. As charging solutions are reaching insane levels of power output, the focus is slowly shifting from sheer speed to safety and wider use case scenarios. At the event, the company revealed its progress in developing charging solutions for smartphones as well as other products.

Here are the key takeaways from the OPPO Flash Charge Open Day event.

1. Five-Fold Safety Protection System

OPPO explains how it uses a five-fold protection system to ensure its charging technology remains safe even at high levels of charging output.

The brand says that its Flash Charging tech employs five different safety measures, which include:

• A new Fuse with lower Impedance
  OPPO has incorporated a new fuse in its Flash Charging system which features lower impedance. The fuse will blow in case of abnormal electricity supply to the battery while bringing notable improvements in the efficiency and safety of the charging system as compared to its previous generation.
• Efficient Gallium Nitride (GaN) Switches
  OPPO’s Flash Charging technology uses GaN switches (to manage the flow of electricity), replacing the usual MOSFET switches. This change brings in two major benefits,
  in space as well as safety. One GaN switch can replace two series MOSFET switches, so it saves space. Further, thanks to GaN’s lower impedance and the ability to resist higher voltages, it improves the overall charging efficiency while being reliable and safe.
• Internal series bi-cell design
  OPPO’s latest Flash Charging technology relies on a new internal series bi-cell design. Essentially, two battery cells are placed inside one battery casing, separated by special molecular material. These battery cells operate independently while allowing voltage to be doubled within a smaller space than the previous series bi-cell battery design.
• Battery Safety Detection Chip
  The new Battery Safety Detection chip works with OPPO’s AI algorithm to detect significant problems within the battery. It can also remove potentially false warnings and can accurately warn users if the battery has some serious issues.
• Composite Current Collector
  OPPO’s Flash Charging technology uses a new battery that replaces the traditional aluminum anode with a special composite current collector. This composite collector is extremely malleable and significantly reduces the chances of a short circuit in case of external damage.
  According to OPPO’s internal tests, the new battery passes puncture and collision tests with a 100% success rate.

2. Flash Charging is now Smart

Flash charging is known for its fast charging output, but the latest version of this technology is smarter than before. This change brings a better balance between charging speed and battery life. The brand has finally managed to monitor battery conditions in real-time which allows it to adjust the charging power based on the requirement of the device.

For example, if you are charging your device overnight, the Flash Charging technology will switch to ‘relax mode’, wherein it will slowly charge the phone over the course of the night to extend the battery life. OPPO says that while ensuring 65W SuperVOOC, this technology can help retain 80% of the battery’s capacity even after 1500 charging cycles.

It can also work in the opposite use case scenario. Suppose you want to head out urgently, this Smart Charging system can speed up the charging output by up to 20%, reducing the time taken to charge a 4500mAh battery from 36 minutes to just 30 minutes.

Further, if you are charging the phone while using it, this same technology will ensure that the phone doesn’t overheat, optimizing the balance between charging temperature and charging speed in real-time.

3. Extreme Charging Technology for Safe Charging in Freezing Situations

Lithium-ion batteries don’t like extremely cold environments. But OPPO’s flash charging technology aims to enable fast charging even in such extreme conditions by allowing the battery to generate its own heat.

4. OPPO announces The Flash Initiative – Brings VOOC to new products

It’s been seven years since OPPO debuted its Flash Charging technology in the market. Now, the brand is looking to expand its super-fast charging technology to new categories. In this regard, it has launched a new project, The Flash Initiative wherein it will bring its VOOC charging technology to categories like automobiles, and public spaces, through patent licensing. This will allow other manufacturers to use OPPO’s Flash Charging technology in their own products in the future.

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Over the past few years, OPPO has taken the lead in the industry with its VOOC fast charging technology. Today marks an important achievement for the company. OPPO has officially announced 125W Flash Charging technology for its smartphones, evolved from its 65W SuperVOOC technology announced last year. This makes it the world’s fastest wired charging technology in the industry. But the company doesn’t stop here, it has also announced the World’s Fastest Wireless Charging technology – the 65W AirVOOC.

125W Flash Charge comes with double-6C cells

OPPO’s new flash charging technology can charge a 4000mAh battery up to 41% in just 5 minutes and 100% in 20 minutes!

The 125W flash charging technology is built on the existing 65W SuperVOOC 2.0 charging protocol. The VOOC charging protocol has always focused on increasing the current (instead of the voltage) to increase the total wattage. The 65W SuperVOOC 2.0 supported up to 10V / 6.5A. But now, with the 125W Flash Charge technology, OPPO has doubled the voltage with the current remaining more or less the same.

Here’s a first look at 125W Flash Charge technology in action. It can fully charge a 4,000mAh battery in 20 minutes. #FlashForward pic.twitter.com/EWtfGcsL4m

— OPPO (@oppo) July 15, 2020

In order to achieve an incredible 125W, the OPPO Flash Charge increases the voltage to 20V while the maximum current drops a little to 6.25A. This is further made possible by significantly improving power density properties. Instead of two 3C cells found on the SuperVOOC 2.0 tech, the new Flash Charge protocol utilizes two 6C cells. This marks a breakthrough in the battery ratio (this ratio is defined as the charge and discharge ratio of the cell). The new technology further comes with industry-leading multiple battery tab structures, three parallel charge pumps, and an integrated MCU (Microcontroller unit) for improving charging efficiency.

The 125W flash charge technology is compatible with the previous versions like SuperVOOC and VOOC protocols. It even supports mainstream charging technologies like 65W PD (Power Delivery) and 125W PPS (Programmable Power Supply).

Given the extremely high wattage being thrust into the smartphone, OPPO has also worked on its safety protection features by adding 10 more temperature sensors to monitor the charging status. Other safety measures include fuse overvoltage protection, Type-C to Type-C wire as well as 128-bit high-strength encryption algorithm.

Editor’s Pick: World’s First 120W fast charging unveiled by iQOO; First 120W iQOO phone could be coming in August

65W AirVOOC Wireless Charging makes Wired Charging Obsolete

In a surprise announcement, OPPO also announced the world’s fastest wireless charging technology. The new wireless charging protocol can fully charge a 4000mAh battery in just 30 minutes! This makes it faster than most current wired charging solutions in the market and has the potential to make wired charging obsolete.

Today we’re not just announcing one flash charge innovation breakthrough.

This is 65W AirVOOC wireless charging. #FlashForward pic.twitter.com/ocWJssYqKH

— OPPO (@oppo) July 15, 2020

In fact, in a graph, OPPO revealed that the 65W AirVOOC charges a phone in the same time as its 65W SuperVOOC 2.0 wired charging technology.

The OPPO AirVOOC 65W wireless charging technology uses a self-developed isolated charging pump technology and parallel dual-coil design to improve the wireless charging efficiency. It has also reduced the interference in the charging frequency and comes with five-fold safety protection measures in addition to the standard foreign object detection feature. Like its 40W wireless charging tech, the 65W AirVOOC charging is compatible with the Qi standard.

OPPO also revealed a conceptual wireless charger based on its 65W AirVOOC wireless flash charging technology. The charger comes with a sculpted-glass body which is made of moldless rapid prototyping technology. OPPO reveals that this is the first application of this type of technology in the consumer electronics market.

At the bottom of the charger, there’s a semiconductor cooler for better heat management. This allows the temperature of the phone to be 2°C lower than using a traditional fan for heat dissipation.

Unfortunately, we have no word on the release date or pricing of this 65W AirVOOC wireless charger. We also don’t know when we’ll see a smartphone with this 125W Flash Charge technology.

Nevertheless, this is a big leap in smartphone charging technology. And it’s becoming evident that charging a smartphone won’t be a pain point for users in the near future.

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