A leaker who goes by the username of @L0vetodream on Twitter, posted a photo from Weibo, indicating that the upcoming iPhone 13 series is getting a battery bump as compared to its iPhone 12 counterparts. The screenshot in the tweet below is from China’s TENNA certification site.

— 有没有搞措 (@L0vetodream) June 1, 2021 Here’s what’s the comparison looks like:

iPhone 12/12 Pro v iPhone 13/13 Pro: 2,815 mAh vs 3,095 mAh iPhone 12 Pro Max v iPhone 13 Pro Max: 3,687 mAh vs 4,352 mAh iPhone 12 mini v iPhone 13 mini: 2,227 mAh vs 2,406 mAh

Out of all four models, the Pro Max variant is seemingly getting a major boost of 665 mAh (why not 666, Tim?). All these specs indicate better battery life, and it’s generally safe to assume a more efficient processor and software updates will support this in the upcoming models. [Read: This dude drove an EV from the Netherlands to New Zealand — here are his 3 top road trip tips] But we have to keep in mind that last year there were rumors of the iPhone screen supporting a 120Hz refresh rate, which didn’t happen. While we didn’t get that super desirable feature in the iPhone 12, there’s a chance we might see it in the upcoming release later this year. That feature might hog your battery a bit more than the standard 60Hz refresh rate, so Apple might be including this extra juice to counter the drain. We’re at least a few months away from Apple’s marquee event, so hopefully more leaks along the way will solidify this rumor.