There is rarely much to criticise about Garmin's market-leading Edge GPS computers, but one aspect that occasionally comes under fire is battery life. Most units will get you through an imperial century, including navigation and cake stops – and will have plenty to spare even if your legs don't.
But what about if you're looking to step that usage up a level – multi-day trips and even bikepacking adventures into the wild? Even in the latter case you can of course use a power bank (standard issue kit for bikepackers), but if you can do away with having to worry about your head unit running out of juice at an inconvenient moment, that's another layer of stress dealt with.
