As consumers increasingly demand longer-lasting mobile power, battery technology remains a critical area of innovation for smartphone manufacturers. while several brands are boosting capacity with larger single-cell designs, Samsung SDI is reportedly exploring a different approach. Sources indicate the company is testing a dual-cell battery pack utilizing silicon-carbon technology, potentially reaching a combined 20,000mAh – a significant leap beyond current smartphone offerings. However, early testing reveals potential hurdles too widespread implementation.
Samsung SDI is reportedly testing high-capacity, dual-cell batteries reaching 20,000mAh, utilizing silicon-carbon technology. The batteries are currently in the experimental phase and may not be directly implemented in smartphones.
Samsung Reportedly Testing 20,000mAh Silicon-Carbon Dual-Cell Battery
Several Chinese smartphone brands have recently begun incorporating batteries with capacities of 8,000mAh or greater into their devices. Now, according to sources, Samsung SDI is evaluating a dual-cell battery configuration with a combined capacity of 20,000mAh for potential smartphone applications.
While Samsung has historically not prioritized battery capacity in its smartphones – the latest Galaxy S25 Ultra still features a 5,000mAh battery – sources indicate that Samsung SDI is in the process of testing a dual-cell silicon-carbon battery totaling 20,000mAh.
The battery pack, according to the sources, consists of a 12,000mAh cell with a thickness of 6.3mm and an 8,000mAh cell measuring 4mm thick. During testing, the battery reportedly achieved a screen-on time of up to 27 hours and is designed to support approximately 960 charge cycles per year. This development comes as manufacturers explore ways to extend device usage between charges, a key factor for consumer satisfaction.
However, the reports also indicate that the test results were not entirely positive. Following testing, the battery experienced swelling, raising concerns about its long-term durability. Another source added that the 8,000mAh cell swelled from an initial thickness of 4mm to 7.2mm.
It’s important to note that this information remains unconfirmed and originates from sources considered less reliable. Furthermore, there is a possibility that Samsung SDI is evaluating this battery technology for electric vehicles rather than smartphones. You can find more details about the reported testing at gsmarena.
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