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Apple has enabled charging speeds of up to 7.5W on its MagSafe Battery Pack in the latest firmware update for the iPhone accessory, which was released on Tuesday.
The firmware update was released on April 19 as an over-the-air update. While patch notes weren't provided at the time, Apple has since updated a support document to clarify that the update brings an improved charging rate.
"In order to get 7.5W charging on the go, update your MagSafe Battery Pack to the latest firmware," Apple writes. "The firmware update begins automatically after you attach your battery pack to your iPhone. The firmware update can take about one week."
Previously, the MagSafe Battery Pack topped out at 5W of charging — about the same as Apple's ubiquitous power brick that's no longer included with devices.
Users can check which firmware version they have on a connected iPhone by heading to Settings > General > About > MagSafe Battery Back. The firmware update that enables 7.5W charging is version 2.7.b.0.