Various technical aspects of future hardware cannot be kept completely secret simply because there are different requirements for publication in official databases in different markets. In the past, Chinese and Russian portals in particular have always been a real treasure trove, because even if the product name has not yet been mentioned, clear conclusions can still be drawn. This time, a discovery in the Chinese C3 database is causing a stir, documenting new batteries from the corresponding Apple supplier – most likely those of the iPhone 18 Pro and Pro Max. 18 Pro Max with eSIM: Big plus
Several leakers had already contributed information about the alleged capacities in recent weeks. It was now considered certain that the Pro Max would see a noticeable increase; the version without a physical SIM card had a particularly high capacity. In the case of the iPhone 18 Pro, there is only a minimal plus:
| Model | mAh SIM | mAh eSIM |
| 17 Per | 3988 | 4252 |
| 18 Pro | 4056 | 4288 |
However, things look different with the iPhone 18 Pro Max, which stands out more clearly than before from the Pro. If you choose this variant, more than 5,500 mAh will be available in an iPhone for the first time – but only if there is no longer a SIM slot installed. The slot has been missing in the USA for years, but in this country it was still included in the 17 Pro Max. According to rumors, the division could change with the iPhone 18, so that we also get the larger battery capacity.
| Model | mAh SIM | mAh eSIM |
| 17 Pro Max | 4823 | 5088 |
| 18 Pro Max | 5391 | 5567 |
The stated mAh values of the iPhone 18 Pro correspond exactly to what the leaker Digital Chat Station had already reported a few weeks ago. For the Pro Max, however, he only gave a rough range; the exact data was not available to him at the time. Last week there was also a report circulating that spoke of “more battery growth than expected” – which reflected the correct trend, but the most recent figures are still slightly higher.
