A reliable 10,000mAh portable charger costs $20–$40; high-capacity 27,000mAh models with fast charging run $50–$100. Amazon and Anker's own store offer the most consistent pricing and quality.
Cheapzix compares retailer listings when available. Prices and availability can change by retailer. Affiliate disclosure — always verify details on the retailer site before buying.
About Power Bank / Portable Charger
Popular models: Anker 622 MagSafe ($35, MagSafe wireless), Anker 737 Power Bank ($99, 140W, 24,000mAh), Baseus 30,000mAh ($59, 65W), and Mophie Powerstation Plus ($59, built-in cables).
Best deal: The Anker PowerCore Slim 10000 ($25–$30 at Amazon) is the most reliable budget power bank — fits in a back pocket, charges an iPhone twice, and Anker's customer service is excellent.
Premium pick: The Anker 737 Power Bank ($89–$99) packs 24,000mAh with 140W USB-C output — it can charge a MacBook at full speed and has a built-in display showing exact wattage.
Where to Buy Power Bank / Portable Charger
Amazon, Best Buy, Target, Anker.com, Costco The comparison above covers the major retailers so you can review options before buying.
Frequently Asked Questions
How many charges does a 10,000mAh power bank give an iPhone?
A 10,000mAh bank provides approximately 2.5 full charges for an iPhone 16 (with conversion losses); a 20,000mAh bank provides 4–5 charges.
Can I bring a power bank on a plane?
Yes — carry-on only, not checked baggage. Banks up to 100Wh (about 27,000mAh) are allowed; 100–160Wh requires airline approval; over 160Wh is banned.
What is PD (Power Delivery) charging?
USB-C Power Delivery allows up to 140W output for fast-charging laptops and phones — a standard 5W USB-A port takes 6x longer to charge the same device.
How long does a power bank last before it degrades?
Most lithium power banks maintain 80% capacity after 500 charge cycles — roughly 2–3 years of daily use before noticeable degradation.