Power banks have had a safety problem for years. Cheap cells, inflated capacity claims, fire risks — the market has been loosely regulated and consumers have paid the price. China just changed that with its first mandatory national standard for mobile power sources, published March 31 and taking effect April 1, 2027.This is a significant regulatory shift. Here's what it actually requires.Key Pointsa]:text-primary dark:[&>a]:text-white [&>a]:underline md:text-lg text-base">China published its first mandatory national safety standard for power banks on March 31, 2026 — full implementation begins April 1, 2027a]:text-primary dark:[&>a]:text-white [&>a]:underline md:text-lg text-base">All power bank battery cells must pass a needle-puncture…