Which cycling computer has the best battery life?

Battery life claims vary widely from real-world results in the reviews we read. Reviewers report strong real-world endurance from the Garmin Edge 540 and Wahoo Bolt V3 (one tester measured the Bolt V3 well above its claimed figure), while specialist communities flag the newer Garmin Edge 850 as falling short of its rating with sensors connected. Always discount manufacturer claims and check independent measurements.