is this a quick charger?

No, it's not a quick charger. Only charges at the slower rate, even with the fast charge cable. The description is not accurate. Samsung's fast charger charges at a power of 9V x 1.67A = 15 Watts. The basic Samsung charger charges at a power of 5V x 2A = 10 Watts. This charger is 5V x 2.1A = 10.5 Watts. Last I checked 10.5 is less than 15. It's not a fast charger. I should have read the details.

Is that 2.1A max for each slot, or total?

Normally, the max number in this case 2.1 amps is the total. So 2.1 max if only using one port at a time and a total of 2.1 max total when both are used. If the device you are using tries to draw more than 2.1 amps, the voltage will drop so the total power is limited to 5v x 2.1a = 10.5 watts. If you try to draw more than 2.1 amps, the voltage tries to drop so the total remains about 10.5 watts maximum limit. 5 volts is the standard regulated voltage for USB. So when they say 2.1a, they mean 2.1 x 5 = 10.5 watts maximum. If you try to draw more than 10.5 watts, the regulation may cause this to stop working to protect this and the devices plugged into it. It is useful to know that watts is power and that voltage is always 5 volts for USB and to know how to convert between amps and watts when the voltage is fixed. Also, a USB device generally uses very little amps and many use less than 0.5 amp and when you are charging something, the amps tends to drop as the device gets closer to fully charged. For most USB devices, 2.1 amps is 100% plenty to fully power two USB devices at the same time.

What are the dimensions of this charger?

Terri, measured them and they are 1.25 inches on all four sides. Hope this helps. John

You may have to get a converter.

2pcs Wall Chargers | Desertcart UK

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Description

⚡ Power Up Twice as Fast, Wherever You Are!

SAFETY FIRST ALWAYS - Built-in safeguards prevent overcharging, overheating, and overcurrent 🛡️
SLEEK PORTABLE DESIGN - Compact, lightweight charger fits perfectly in your office or travel bag ✈️
UNIVERSAL COMPATIBILITY - Works flawlessly with all USB-A devices from iPhone 15 to Samsung Galaxy and beyond 🔌
GLOBAL READY ANYWHERE YOU GO - Supports 100-240V input for seamless charging worldwide 🌍
DOUBLE THE POWER HALF THE WAIT - Charge two devices simultaneously at a speedy 2.1A total output ⚡

The AILKIN 2-Pack USB Wall Charger offers dual USB ports delivering a combined 2.1A output for fast simultaneous charging. With a wide 100-240V input range, it’s perfect for global use. Safety features include overcharge, overcurrent, and overheating protection to keep your devices secure. Its compact, lightweight design makes it ideal for home, office, or travel, and it supports a broad range of devices from the latest iPhones to Samsung Galaxy models.

Specifications

ASIN	B0734SN6VR
Amperage	2.1 A
Best Sellers Rank	#420 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #61 in Cell Phone Wall Chargers
Brand	AILKIN
Built-In Media	Package List 2Pcs Dual Port Power Adapter
Color	White
Compatible Cellular Phone Models	Google Pixel 2 XL, Google Pixel 3 XL, Google Pixel 3a, Google Pixel 3a XL, Google Pixel 4 XL, Google Pixel 4a, Google Pixel 5, Google Pixel 6, Google Pixel 6 Pro, Google Pixel 6a, Google Pixel 7, Google Pixel 7 Pro, Google Pixel 7a, HTC One (E8), HTC One (M8), HTC One A9, HTC One M9, LG G Stylo, LG G3, LG G4, LG G5, LG G6, LG Stylo 2, LG Stylo 3, LG Stylo 4, LG Stylo 5, LG Stylo 6, LG V20, Samsung…
Compatible Devices	iPhone 15/15 Pro/15 Pro Max/15 Plus/14/14 Pro/14 Pro Max/14 Plus/SE 3/13/13Pro/13Pro Max/13 Mini/12/12Pro/12Pro Max/11/11Pro/11Pro Max/X/XR/Xs/Xs Max/8/8 Plus/7/7/6/6S/Plus, iPad, iPad Air, iPad mini, iPad Pro, Samsung Galaxy S23 Ultra/S23/S23+/S22 Ultra 5G/S22 Plus/S21+/S21 Ultra/S20 FE/S10+/S9/S9 Plus/S8/S8+/S7/S7 Edge/S6/S6 Edge, Galaxy Note 20/10/9/8, Galaxy A14/A13/A12/A11/A53/A52/A51/A32, A02S/A03S/A04S, Z Flip 5/4/3/2, Z Fold 4/3/2, Google Pixel 7 Pro/7a/7/6 Pro/6/6a/5/5a/4a/4 xl/3a xl/3a/3 xl/2 XL, LG Stylo 6/5/4/3/2, LG, Motorola, Kindle Fire New HD 10 9 8 and other all USB C OUTLET DEVICES. Compatible Devices iPhone 15/15 Pro/15 Pro Max/15 Plus/14/14 Pro/14 Pro Max/14 Plus/SE 3/13/13Pro/13Pro Max/13 Mini/12/12Pro/12Pro Max/11/11Pro/11Pro Max/X/XR/Xs/Xs Max/8/8 Plus/7/7/6/6S/Plus, iPad, iPad Air, iPad mini, iPad Pro, Samsung Galaxy S23 Ultra/S23/S23+/S22 Ultra 5G/S22 Plus/S21+/S21 Ultra/S20 FE/S10+/S9/S9 Plus/S8/S8+/S7/S7 Edge/S6/S6 Edge, Galaxy Note 20/10/9/8, Galaxy A14/A13/A12/A11/A53/A52/A51/A32, A02S/A03S/A04S, Z Flip 5/4/3/2, Z Fold 4/3/2, Google Pixel 7 Pro/7a/7/6 Pro/6/6a/5/5a/4a/4 xl/3a xl/3a/3 xl/2 XL, LG Stylo 6/5/4/3/2, LG, Motorola, Kindle Fire New HD 10 9 8 and other all USB C OUTLET DEVICES. See more
Compatible Phone Models	iPhone 11/11Pro/11Pro Max/X/XR/Xs/Xs Max/8/8 Plus/7/7/6/6S/Plus, iPad, iPad air/ 2, iPad mini 4 3 2 1, iPad Pro, Samsung Galaxy Note 10/A10/S10+/S9/S9 Plus/S8/S8+/S7/S7 Edge/S6/S6 Edge/S 5/Note 9/8, Google Nexus 6P, Google Pixel 2 XL, HTC One M9+/M9/ A9/ M8/ E8, LG U, LG G Stylo, LG G6/G5/G4/G3, LG V20, Blackberry, Nokia, Motorola, Sony, Huawei, and other all USB OUTLET DEVICES Compatible Phone Models iPhone 11/11Pro/11Pro Max/X/XR/Xs/Xs Max/8/8 Plus/7/7/6/6S/Plus, iPad, iPad air/ 2, iPad mini 4 3 2 1, iPad Pro, Samsung Galaxy Note 10/A10/S10+/S9/S9 Plus/S8/S8+/S7/S7 Edge/S6/S6 Edge/S 5/Note 9/8, Google Nexus 6P, Google Pixel 2 XL, HTC One M9+/M9/ A9/ M8/ E8, LG U, LG G Stylo, LG G6/G5/G4/G3, LG V20, Blackberry, Nokia, Motorola, Sony, Huawei, and other all USB OUTLET DEVICES See more
Compatible Power Plug Type	Type A - 2 pin (North American), Type C
Connectivity Technology	USB
Connector Type	usb
Current	AC
Current Rating	2.1 A
Customer Reviews	4.6 out of 5 stars 80,343 Reviews
Enclosure Material	Plastic
Form Factor	Plug
Global Trade Identification Number	00708445927912
Included Components	Package List 2Pcs Dual Port Power Adapter
Input Voltage	240 volts
Item Weight	11 g
Main Power Connector Type	2 Pin
Manufacturer	Shenzhen Putuo Technology Co., Ltd
Mfr Part Number	PT-WC-13
Model Number	PT-WC-13
Mounting Type	Wall Mount
Number of Items	2
Number of Power Levels	1
Output Current	2.1 A
Output Voltage	5 volts
Plug Type	Type A
Power Plug	Type A - 2 pin (North American & Japanese), Type C
Power Source	Corded Electric
Special Feature	Lightweight Design, Fast Charging,Travel,Short Circuit Protection
Special Features	Lightweight Design, Fast Charging,Travel,Short Circuit Protection
Total USB 2.0 Ports	2
Total Usb Ports	2
UPC	708445927912
Unit Count	2 Count
Wattage	20 watts
Wired Charging Connector Type	USB Type A

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2Pcs Wall Chargers

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