With only a few months left before the rumoured launch of Samsung’s Galaxy S27 series, new certification listings have now revealed battery details concerning the upcoming Galaxy S27 Pro and Galaxy S27 Ultra smartphones. Following their appearance on South Korea’s Safety Korea database, we have also spotted the two battery models on the TÜV database, revealing their rated and typical capacities.
Read more about it below.
Samsung Galaxy S27 Pro and Galaxy S27 Ultra – Battery Certifications
As per the Safety Korea listings spotted by Notebookcheck, the battery models ‘EB-BS958DBY’ and ‘EB-BS957CBY’, associated with the Galaxy S27 Ultra and Galaxy S27 Pro respectively, have received certification. The former carries the certification number ‘YU10899-26034’, while the latter has been listed with ‘YU10899-26036’.
YU10899-26036_1 – Galaxy S27 Pro
Speaking more, both batteries are manufactured by China’s Zhuhai CosMX Power Jinwan Subsidiary, and the certified units are pre-production samples. To note, their capacities are not legible in the images shared on the Safety Korea database. Earlier 3C listings had pointed to rated capacities of 5,534mAh for the Ultra model and 5,087mAh for the Pro model, with typical capacities expected to be around 5,700mAh and 5,200mAh respectively. Both smartphones have also been reported to support 60W wired charging.
Now, the TÜV listings we have spotted provide more precise details concerning these two batteries. The Galaxy S27 Ultra’s ‘EB-BS958DBY’ battery has been listed with a 5,534mAh rated capacity and a 5,700mAh typical capacity. Meanwhile, the Galaxy S27 Pro’s ‘EB-BS957CBY’ battery carries a 5,087mAh rated capacity and a 5,240mAh typical capacity.
| Details | Galaxy S27 Ultra Battery | Galaxy S27 Pro Battery |
|---|---|---|
| Battery model | EB-BS958DBY | EB-BS957CBY |
| TÜV certificate number | JPTUV-193013 | JPTUV-193011 |
| Rated capacity | 5,534mAh | 5,087mAh |
| Typical capacity | 5,700mAh | 5,240mAh |
| Rated energy | 21.37Wh | 19.90Wh |
| Typical energy | 22.01Wh | 20.49Wh |
| Voltage | 3.86V | 3.91V |
Additionally, both TÜV listings categorise the products as ‘Secondary lithium-ion battery’, with Samsung mentioned as the brand and Zhuhai CosMX Power JinWan Subsidiary Co., Ltd. listed as the manufacturer. The certificates carry an issue date of the 11th of September 2026.
While these listings reveal the battery capacities, Samsung is yet to officially announce the launch details of its upcoming Galaxy S27 series. More updates can be expected as the rumoured launch timeline approaches.
Stay tuned for more updates.
