On July 22, it was reported that OPPO held a flash charge open day activity in Chongqing today, and released a number of new technologies related to batteries and fast charging, including dual battery cells in series, sandwich safety batteries and 65W based smart charging technology.

Compared with the dual cell battery originally designed by OPPO for high power flash charging, the new inner string dual cell packs two cells into a battery packaging bag, and uses a special layer of polymer material to make the internal two cells work independently without interference, reducing space waste. Officially, the battery capacity can be increased by 5% under the same volume, The space equivalent to the original 4500mAh battery can now be filled with 4750MAh batteries.

The sandwich type safety battery is a scheme designed by OPPO to prevent the battery from burning due to external force extrusion. The sandwich type safety battery is internally equipped with a composite collector (using a layer of new composite polymer material as the matrix, and coating two layers of aluminum to form a sandwich structure) to replace the traditional aluminum foil collector. When the battery core is subject to acupuncture, the composite collector cracks to block the short circuit of the positive and negative electrodes, In order to avoid combustion, it is said that it can pass 100% acupuncture and heavy impact tests.

The finally released smart charging technology can be regarded as the re optimized version of the original 65W flash charge. The charging speed is claimed to be increased by 20%, and the 4500mAh battery can be fully charged in 30 minutes; The battery life is increased from 80% (actual capacity) remaining after 800 cycles to 80% remaining after 1500 cycles; Support intelligent temperature control, cooperate with application prediction and dynamic matching power of internal heating state.

As for when the 125W flash charge technology released last year will be launched, there is still no news. At present, OPPO is not too eager to pursue the absolute speed and high power of charging, but to strengthen the safety, temperature control, battery life and other characteristics.

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