Much as we may love our iPhones, battery-life has never been one of its strengths (ask Samsung). But if you were hoping that the larger size of the iPhone 6 would mean a much bigger battery, some Chinese media reports spotted by GforGames suggest that we might be disappointed.

The reports claim that the battery in the 4.7-inch model will be in the 1800-1900mAh range – only around 20 percent more than in the iPhone 5s. Factor in the increased power requirement of the larger screen and corresponding increase in resolution, and we might not see a significant boost increase in battery-life … 

The 5.5-inch model may do better – that’s said to have a 2500mAh battery.

While the reports are highly speculative, it is notable that all the iPhone 6 mockups doing the rounds, along with some of the alleged genuine parts, suggest that the iPhone 6 will be significantly thinner than previous-generation iPhones – and a slimmer battery would be the most obvious way to achieve that. While the larger sizes will allow the battery to be wide and longer, much of the benefit could be lost to the slimmer form-factor.