For those days when battery life becomes an issue, you can't always rely on a wall or car charger to give you the boost you need. Having a reliable iPhone 6s battery case on hand can make the difference between a dead device and one that will keep on keepin' on — no matter what. While some manufacturers are still crafting their battery cases, there are already a handful of options available for your new iPhone 6s that are worth scooping up early.

And, if you're unsure about investing in a battery case, you can check out some easy fixes for subar battery life on the iPhone 6s that may be of some help in the meantime.