The only power bank that won't light your bag on fire or die after 3 charges.
Why Not Just Buy the Cheap One?
Cheap no-name banks use fake cells that lose capacity fast or have no safety circuits. The Anker uses Panasonic/Samsung cells and has multi-protection — it actually delivers the rated 10000mAh.
The Buy-Once Math
A $10 gas-station bank might last 10 charges before puffing. This one still works years later. At $36, that's less than a coffee for each year of reliable power. Buy once, never fear a dead phone.