Power bank buying guides, MagSafe and Qi2 explainers, and travel rules.
A 10,000mAh power bank takes roughly 2–3 hours with a 20W+ USB-C PD charger, or 5+ hours with an old 5W adapter. Here is a simple way to estimate charge time and how to recharge your power bank faster.
A good-quality power bank won’t damage your phone battery; your phone controls how much power it takes. Heat, cheap uncertified banks and constant 0–100% cycling cause more wear. Here are the facts and how to charge safely.
MagSafe is Apple’s magnetic charging system; Qi2 is an open standard built on MagSafe’s magnet design that brings fast, aligned wireless charging to more brands. Here is how they compare, and why “MagSafe-compatible” doesn’t always mean fast.
Power banks are allowed on planes in carry-on bags only, never checked luggage. Most airlines allow banks under 100Wh freely and 100–160Wh with approval. Here is how to check your power bank’s rating and avoid trouble at security.
For most phones, a 5,000mAh power bank gives a solid top-up and 10,000mAh roughly a full charge or more; 20,000mAh suits trips and tablets. Here is how to estimate real charges, why you never get the full rated capacity, and what to buy.