Best for one person, a weekend
Anker PowerCore 10000
Pocket-size, dependable, and enough for a weekend of phone charging. The default choice.
This is the right answer for most campers and it is smaller than people expect. A 10,000mAh bank delivers roughly two full phone charges in practice, which is a weekend for one person with normal use, and it fits in a pocket rather than claiming space in a bag. Anker's reliability in this category is the main reason it leads: cheap banks fail by quietly losing capacity over a year, and that pattern shows up far less here. The limits are what the size implies -- it will not charge a laptop, and it will not keep a family of four topped up for four days.
Specs
- 10,000mAh rated cell capacity
- USB-C input and output on current versions
- Small enough for a jacket pocket
- Anker's standard warranty
Good for
- Small enough that carrying it is not a decision
- Roughly two full phone charges, which covers most weekends
- Anker's long-run reliability record in this category is the best of the mainstream brands
Bad at
- Not enough for a laptop or for charging several devices over several days
- No pass-through charging on some versions -- it charges itself or your device, not both
- No light, no extra function -- it is only a battery
