Cool enough to own an Apple watch? Did you know about the secret port, which could be the answer to longer battery life? The 6 pin diagnostic port underneath the Apple Watch case has been discovered by accessory maker Reserve Strap and after engaging with tests found it can be used for charging. Although you have got to wonder why Apple hasn’t offered this port as a charging option? It might be a bit soon to strap on a non-Apple-approved charging device and even though it may work for now it could mean future updates could disable the charging feature. So that fancy expensive battery strap could just end up being a strap that just simply keeps you attached to the Apple Watch.