The author reflects on the AA battery, contrasting it with devices featuring built-in rechargeable batteries. He notes that many modern devices with Li-ion batteries often fail due to undervoltage issues, leading to premature disposal. This spurred his preference for devices using easily replaceable AA or AAA batteries for portable power, ensuring longevity and ease of use.

He favors rechargeable eneloop batteries, citing their reliability and long lifespan over disposable alkaline options. Over many years, he's experienced no leakage or failures. The author uses AA and AAA batteries in his workbench tools demonstrating how easily they integrate into his workflow. He contrasts this with devices he avoids, preferring the simplicity and availability of USB-C power when possible.

The convenience of easily swapped batteries is a major advantage. He points out that older devices like the Sony Walkman, decades old, continue to function because of their AA battery compatibility. For him, the risk of a device becoming unusable due to battery failure is a major concern, making replaceable battery solutions more appealing.

Ultimately, the author's preference highlights the importance of user-serviceability and component longevity in a world of increasingly complex electronics. While integrated batteries offer convenience, they often come at the expense of device lifespan, making the humble AA battery a surprisingly resilient choice for portable power.