Why is my power bank providing fewer charges than expected?
The capacity reduction during charging is due to a 30% to 45% energy loss in the battery cells and conversion circuitry. Therefore, a fully charged Anker Prime 20,000mAh Power Bank offers an estimated 11000mAh to 14000mAh to power devices.
How can I estimate the number of charges for my device?
To estimate charges, use this formula: (Power Bank Capacity × 0.65) ÷ Device Battery Capacity. For example, an iPhone 15 with a 3,877mAh battery can receive about 3.3 charges from a 20,000mAh power bank (calculated as (20,000mAh × 0.65) ÷ 3,877mAh).
How do you calculate the watt-hour capacity of this power bank?
This power bank uses four 5,000mAh cells at 3.6V. The calculation per cell is 3.6V × 5,000mAh / 1,000 = 18Wh. Multiplied by four, the total capacity is 72Wh, which is below the 100Wh limit set by airline regulations for carry-on electronics.
Technical Details
Brand: Anker
Product Dimensions: 12.7 x 5.46 x 4.98 cm; 544.31 g
Item model number: A13361
Color: Golden
Batteries: 1 Lithium Polymer batteries required. (included)
Special features: USB-C1/C2: 100W Max USB-A: 65W Max Total:200W Max 【USB-C】 BC 1.2:5V⎓1.5A APPLE 2.4A：APPLE 5V 2.4A QC3.0：5V ⎓ 3A / 9V ⎓ 2A / 12V ⎓ 1.5A PD：5V ⎓ 3A / 9V ⎓ 3A/12V=3A/ 15V ⎓ 3A / 20V ⎓ 5A 100Wmax PPS：3.3V-11V ⎓ 3A FCP：5V ⎓ 3A / 9V ⎓ 2A / 12V ⎓ 1.5A SCP: 10V⎓2.25A AFC：9V ⎓ 1.67A 【USB-A】 BC 1.2:5V⎓1.5A APPLE 2.4A：APPLE 5V 2.4A QC3.0：5V ⎓ 3A / 9V ⎓ 2A / 12V ⎓ 1.5A FCP：5V ⎓ 3A / 9V ⎓ 2A / 12V ⎓ 1.5A SCP: 10V⎓2.25A AFC：9V ⎓ 1.67A UFCS：3.3 ~ 10V 4A (P1) SUPERVOOC：5V ⎓ 6A / 10V ⎓ 6.5A, USB-C1/C2: 100W BC 1.2:5V⎓1.5A APPLE 2.4A：APPLE 5V 2.4A QC3.0：5V ⎓ 3A / 9V ⎓ 2A / 12V ⎓ 1.5A PD3.0：5V ⎓ 3A / 9V ⎓ 3A / 15V ⎓ 3A / 20V ⎓ 5A 100Wmax FCP：5V ⎓ 3A / 9V ⎓ 2A / 12V ⎓ 1.5A SCP：10V ⎓ 2.25A AFC：9V ⎓ 1.67A, Smart Digital Display, Short Circuit Protection, Slim, Over Charging Protection, Fast Charging, Travel
Item Weight: 544 g
200W Total Output: Anker Prime Power Bank 20000mAh equipped with two high-powered USB-C ports and one USB-A port totaling 200W output, quickly charge two laptops simultaneously at 100W each for maximum efficiency.
Lightning-Fast Recharge: The 100W rapid recharge via the USB-C port enables the power bank to be fully recharged in 1 hour and 15 minutes.
Power On the Move: With a compact size of 4.9 × 2.1 × 1.9 inches, the 20,000mAh power bank is designed to fit seamlessly into your bag, making it convenient for travel and ensuring you always have reliable power on the go.
Get Real-Time Information: Stay informed with the smart digital display that provides real-time information on remaining battery capacity, power input, and power output, giving you complete control and visibility over the power bank.
What You Get: Anker Prime 20,000mAh Power Bank (200W), 2 ft / 0.6 m USB-C to USB-C charging cable, travel pouch, welcome guide, 12-month stress-free warranty, and friendly customer service.
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