A new firmware update has been updated to the MagSafe Battery Pack which will allow you to charge an iPhone a little faster. When connected to a 20W charger, the MagSafe pack can transfer up to 15W of charge to an iPhone, but now the MagSafe battery pack will be able to charge up to 7.5W when not connected to the mains. Previously, it only charged up to 5W while portable.
Apple has updated its support page with details on how to update the MagSafe battery. You can use your iPhone, iPad or Mac to update the Pack. If you update with an iPhone, the Pack will automatically update while connected to the device, although this may take up to a week. Apple claims that you can connect the MagSafe Battery Pack to an iPad or Mac and the update should take around 5 minutes.
To check that the latest update (version 2.7) has been installed, connect the Pack to your iPhone and go to Settings> General> About> MagSafe Battery Pack.
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