Think smartphone batteries are simple? This iFixit factory video will change your mind

Credit: Robert Triggs / Android Authority TL;DR A new behind-the-scenes video by iFixit explores a factory floor in China that produces nearly 13 million smartphone battery cells every month. The video reveals that raw cells require dedicated circuit boards flashed with custom software to prevent dangerous overcharging. Before shipping, each battery is tested by diagnostic equipment to verify its capacity, safety thresholds, and 100% health.