battery

A power bank doubles or triples your play time. Here is how to size one for your handheld in 2026, from tiny Linux devices to the Steam Deck.

A worn or swollen battery is fixable. Here is how to safely replace the lithium battery in a retro handheld, what capacity to pick, and the safety rules.

Your retro handheld won't power on or charge? Work through these fixes in order, from a dead battery and bad cable to SD card issues and a forced restart.

How to keep your retro handheld's battery healthy for years — charging habits that matter, safe storage, spotting a swollen cell, and when (and how) to replace it.