FOOMEE 20000mAh 12W Muti-Port Portable Power Bank Ultra Slim with Indicator, AB21
20,000mAh Massive Capacity — Provides powerful battery life, ensuring multiple charges (4 times for most iPhone 13), perfect for travel, work, and everyday life
Simultaneous Multi-Device Charging — Supports USB1/2 and Type-C outputs simultaneously, allowing you to charge up to three devices at once for greater efficiency
12W & 10W Fast Charging — USB1/2 ports provide a max output of 12W and the Type-C port offers 10W max output, quickly charging your devices and saving time
Comfortable Grip Design — Ergonomically designed for a comfortable feel, making it easy to carry and use without fatigue during extended use
Wide Compatibility — Compatible with iPhone, Samsung, Tecno, BT speaker, small fans and other USB devices, catering to a wide range of users across different brands and devices
Ships within 1-2 business days
90-day risk-free trial
2-Year Warranty
Complimentary shipping & returns
FOOMEE 20000mAh 12W Muti-Port Portable Power Bank Ultra Slim with Indicator, AB21
Overview
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Shipping Information
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Customer Support
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FAQ’s
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Comparison
30000mAh
20000mAh
10000mAh
USB1/2: 12W Max each; Type‑C: 10W Max
USB1/2: 12W Max each; Type‑C: 10W Max
USB1/2: 12W Max each; Type‑C: 10W Max
2 × USB‑A + 1 × Type‑C (wired)
USB‑A + Type‑C (wired)
Wireless charging pads (Phone + Watch + Earbuds)
Up to 3 devices
Up to 3 devices
Up to 3 devices
~6 charges for iPhone 13
~4 charges for iPhone 13
~4 charges for iPhone 13
Built‑in strap for hanging on backpack or fingers
Ergonomic grip design for comfortable, fatigue‑free holding
Compact – 3.74 × 2.38 × 1.22 in
iPhone, Samsung, Android, and other USB devices
iPhone, Samsung, Android, and other USB devices
iPhone, Samsung, Android, and other USB devices
Massive capacity for extended battery life
Optimised for comfortable prolonged use
Must be connected to a cable and adapter to function supports fast charging for Apple Watch
FAQ
Why does the power bank charge fewer times than expected?
Some energy loss (typically 30 - 45%) is normal during power conversion because of battery and circuitry design.
Why does charging stop at 80%?
Your iPhone may automatically stop charging at 80% to protect its battery from overheating, as part of iOS 17's thermal management strategy. Charging will resume once the device cools down. Moving it to a cooler spot can help speed up this process.
Is it normal for the power bank or connected devices to feel warm during charging?
Yes. It is normal for devices to generate heat during charging, especially when using your phone for gaming or video streaming. Use the product in a cool, well -ventilated place (32 - 77°F / 0 - 25°C) and pause use of devices that are charging.
Why does the charging power gradually decrease while recharging?
When the power bank is recharging, its input power may gradually decrease to prevent overheating, protect the battery, and maintain safe charging. For best results, use it in a cool, ventilated environment (32 - 77°F) and avoid charging other devices at the same time.