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 Nano Power Bank offers an estimated 5500mAh to 7000mAh to power devices.

How can I estimate the number of charges for my device?

To estimate charges, use this formula: (Power Bank Capacity × 0.7) ÷ Device Battery Capacity. For example, an iPhone 15 with a 3,877mAh battery can receive about 1.92 charges from a 10000mAh power bank (calculated as (10000mAh × 0.7) ÷ 3,877mAh).

How can I charge an iPhone 15 Pro Max with this power bank?

To charge iPhone 15 series and later, an additional USB-C to USB-C cable is required (not included).

Is it normal for the power bank to get slightly warm during use?

Slight heating due to efficiency losses in the conversion circuit is normal. The temperature of this Anker Power Bank meets the temperature limits of the IEC62368 certification standard.

ASIN	B0D3D5YQGD
Batteries	2 Lithium Polymer batteries required.
Best Sellers Rank	#41,547 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #1,027 in Cell Phone Portable Power Banks
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (216)
Date First Available	June 20, 2024
Department	all ages, unisex
Item Weight	10.2 ounces
Item model number	A1637
Manufacturer	Anker Innovations Limited
Other display features	Wireless
Product Dimensions	4.25 x 1.22 x 1.97 inches
Special features	Fast Charging

Anker Nano 3-in-1 Power Bank, Built-in Lightning Cable, USB-C Port, Foldable AC Plug for Fast Recharging, 30W Max Output, 10,000mAh Capacity, Compatible with iPhone 14 Series, AirPods, and More

Details

Description

Specifications

Common Questions