Anker Astro E1 5200mAh

The Anker Astro E1 5200mAh is a compact power bank rated at 5,200 mAh and weighing 119 grams, available in black or white. It charges via a Micro-USB input and outputs through a single USB-A port with PowerIQ support, rated at up to 10 W — solid but not particularly fast charging by current standards. In practice, 5,200 mAh is enough for roughly one full charge of an average smartphone, somewhat less on larger phones with batteries above 4,000 mAh. There is no IP rating for water or dust resistance, and it has no solar panel, so it works better as a backup charger for a multi-day trip than as a standalone power source for extended expeditions. Its small size means it fits easily into a pack's side pocket or a jacket pocket, making it a practical, low-commitment backup for hikers who would rather not carry a bulkier, higher-capacity power bank.