--- product_id: 59918193 title: "Mercury | Emergency USB Power Bank" brand: "mercury" price: "₩26353" currency: KRW in_stock: true reviews_count: 9 category: "Mercury" url: https://www.desertcart.kr/products/59918193-mercury-emergency-usb-power-bank store_origin: KR region: South Korea --- # 800mA output current 4x AA battery powered Dual-color battery level indicator Mercury | Emergency USB Power Bank **Brand:** mercury **Price:** ₩26353 **Availability:** ✅ In Stock ## Summary > 🔋 Stay charged, stay unstoppable—power your life anywhere! ## Quick Answers - **What is this?** Mercury | Emergency USB Power Bank by mercury - **How much does it cost?** ₩26353 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/59918193-mercury-emergency-usb-power-bank) ## Best For - mercury enthusiasts ## Why This Product - Trusted mercury brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Lightweight & Compact:** Sleek 40g design fits effortlessly in your bag or pocket for emergency boosts. - • **Smart Battery Indicator:** Instantly know your power source status with green (alkaline) or blue (rechargeable) lights. - • **Universal Compatibility:** Seamlessly powers smartphones, tablets, and USB devices on the go. - • **Portable Power On Demand:** Charge your devices anywhere with just 4 AA batteries—no outlet needed. - • **Eco-Friendly Rechargeability:** Supports rechargeable AA batteries to keep you powered sustainably and smartly. ## Overview The Mercury Emergency USB Power Bank is a compact, lightweight charger powered by 4 AA batteries, delivering a steady 800mA output to keep smartphones, tablets, and other USB devices energized on the move. Featuring a dual-color battery level indicator for alkaline and rechargeable batteries, it offers a smart, portable solution for emergency power needs without relying on traditional outlets. ## Description From the manufacturer Emergency USB Power Bank This compact, portable USB power bank allows devices to be charged from 4 AA batteries while on the move. Ideal for smartphones, tablet computers and many other devices. Using low level powered batteries, like zinc will result in a poor performance. Alkaline batteries as a minimum would be recommended. PRODUCT FEATURES Powered by 4 AA batteries Ideal for smartphones, tablet computers and many other devices Features a battery level indicator (green for alkaline and blue for rechargeable) Output current 800mA We would recommend the use of a good quality battery with our product (Alkaline batteries recommended) SPECIFICATION Power supply 4 x AA batteries (not supplied) Output voltage 5Vdc Dimensions 79 x 34 x 34mm Weight 40g BOX CONTAINS 1 x Emergency Battery Powered USB Charger (Batteries are not included) Review: Really handy gadget! - I have lots of rechargeable AA batteries for many different devices. More and more devices have built in lithium batteries and charge through USB. I put 4 AA rechargeable batteries in this case and it becomes a power bank. Great idea that works well! Review: Useless product. - This item does not work. Purchased strongest AA batteries I can but it does not charge a thing. Would return but you have to cut packaging to get it out. Not fit for purpose. ## Features - Powered by 4 AA batteries - Ideal for smartphones, tablet computers and many other devices - Features a battery level indicator (green for alkaline and blue for rechargeable) - We would recommend the use of a good quality battery with our product (Alkaline batteries recommended) - Output current 800mA ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0168K5FTQ | | Battery Cell Type | Alkaline | | Battery cell composition | Alkaline | | Best Sellers Rank | 411 in Mobile Phone Portable Power Banks | | Brand | Mercury | | Brand Name | Mercury | | Colour | Blue,Green | | Compatible Devices | Smartphone | | Connector Type | usb | | Connector type | usb | | Customer Reviews | 3.6 out of 5 stars 218 Reviews | | Global Trade Identification Number | 05015972173039 | | Item Dimensions | 8 x 3 x 3 millimetres | | Item Weight | 0.04 Kilograms | | Manufacturer | AVSL Group Ltd | | Manufacturer Part Number | 421.770UK | | Model Number | 421.770UK | | Number of Batteries | 4 AA batteries required. | | Number of Items | 1 | | Number of Ports | 4 | | Output Current | 0.8 Amps | | Output Wattage | 800 Watts | | Power Source | Corded Electric | | Power source | Corded Electric | | Reusability | Rechargeable | | Voltage | 5 Volts | | Warranty Type | No Warranty | ## Product Details - **Battery cell composition:** Alkaline - **Brand:** MERCURY - **Colour:** Blue,Green - **Connector type:** usb - **Voltage:** 5 Volts ## Images ![Mercury | Emergency USB Power Bank - Image 1](https://m.media-amazon.com/images/I/61q57ektgiL.jpg) ![Mercury | Emergency USB Power Bank - Image 2](https://m.media-amazon.com/images/I/61cI0el8EEL.jpg) ![Mercury | Emergency USB Power Bank - Image 3](https://m.media-amazon.com/images/I/61f4c3MOI1L.jpg) ![Mercury | Emergency USB Power Bank - Image 4](https://m.media-amazon.com/images/I/61HrJmqumCL.jpg) ## Questions & Answers **Q: Can I use good quality rechargeable batteries in this powerbank ?** A: Yes, I use decent alkaline or rechargeable batteries. **Q: Can this be use to power USB lights?** A: It charges a mobile phone so no reason it would not power a USB light also. **Q: Will this power a 5v, 2A usb heating pad?** A: You won’t pull enough power from 4xAA to power anything with a usb connection. Waste of money. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Really handy gadget! *by M***6 on 27 April 2026* I have lots of rechargeable AA batteries for many different devices. More and more devices have built in lithium batteries and charge through USB. I put 4 AA rechargeable batteries in this case and it becomes a power bank. Great idea that works well! ### ⭐ Useless product. *by A***R on 14 July 2019* This item does not work. Purchased strongest AA batteries I can but it does not charge a thing. Would return but you have to cut packaging to get it out. Not fit for purpose. ### ⭐⭐⭐ Aa battery power bank *by J***E on 26 June 2019* It charges my iPhone ok but a bit slow compared to a normal power bank , but it is not powerful enough to charge my iPad . Be ok if your iPhone goes dead and you need a charge when nothing else available. John ## Frequently Bought Together - Mercury | Emergency USB Power Bank - Duracell Plus AA Batteries (12 Pack) - Alkaline 1.5V - Up To 100% Extra Life - Reliability For Everyday Devices - 0% Plastic Packaging - 10-Year Storage - LR6 MN1500 - Energizer Eveready LED Torch (2 Pack), Super Bright Flashlight for Outdoors, Camping and Gifts (Batteries Included), Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/59918193-mercury-emergency-usb-power-bank](https://www.desertcart.kr/products/59918193-mercury-emergency-usb-power-bank) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-08-05*