Battery life in any mobile or portable device can always be a problem. With phones, people often have spare batteries and USB charging devices, so battery life is very important.
How long do the batteries last in the new Oculus Touch devices? During the Oculus Connect 3 event, Oculus stated the battery powering each handheld device would last for up to 30 hours with haptics disabled, or up to 20 hours with haptics.
Powering each Touch device is a removable AA battery, rather than a built-in battery so once the battery dies, you can easily pop in another which slots in nicely with a magnetic cover. You can use a regular AA battery or a rechargeable AA battery.