Credit Card Size Portable Battery Chargers – Power banks that fit in your wallet or purse.

Battery chargers that measures approximately 85 mm x 54 mm with varying thickness that fits easily in your pocket, wallet or purse, so you do not have to carry a separate device to top up the charge on your devices.

It is easy to image how these batteries can be so slim and small, think of the battery in your mobile devices, tablet or smartphone.

Due to size restriction, these batteries will have a charge capacity of between 2200 mAh to 5000 mAh.

It may not hold plenty of charge but it is enough to top up of give you that emergency access that you need.

Higher capacity models, around 3000mAh to 5000mAh capacity would even be enough to fully charge up your smartphone.

Why credit card sized power bank?

It useful to have one especially those with built-in cable as it is discreet enough to keep in the pocket, wallet or purse. Lightweight and slim, the convenience of having a backup battery in case your device runs low is a god send especially when you are travelling or at work.

We rely on your smartphone so much; to look up and address, contact number or directions, to book an accommodation or restaurant on the move, to get opening times and to check on our flight times and keep on touch on social media, that the last thing we need is to worry about running out of juice.

With these ultra slim super portable batteries, it will never get in your way. Heck, you would not even noticed it is there, tucked in your pocket or bag.

6 Best Credit Card External Battery Charger

The ultra slim credit card size external battery charger market is dominated by Attom Tech purely on the sheer number of options available from the company.

1. HAME P60 Super Slim Portable Charger 8000mAh
2. Attom Tech Triple Output Super Slim Power Bank 5000mAh
3. Attom Tech Dual Output Super Slim Power Bank 3000mAh
4. Kolumb Ultra Slim Wallet Power Bank 2500mAh
5. Attom Tech with Built-in Cable Power Bank 2500mAh
6. Attom Tech with Built-in Cables Power Bank 5000mAh
7. Vida IT vCard Slim Credit Card Power Bank 2500mAh
8. VIDA IT vCard+ Slim Power Bank 4000mAh

1. HAME P60 Super Slim Portable Charger 8000mAh

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• Capacity: 8000mAh
• Built-in Cable: No
• Thickness: 0.44inch (12mm)
• Dimensions & Weight: 4.9 x 2.6 x 0.44 in. / 126.5 x 68.3 x 12 mm, 5.6oz 0.35lb 160 grams

2. Attom Tech Triple Output Super Slim Power Bank 5000mAh

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• Capacity: 5000mAh (2.5-3 hours to charge with 2A USB adapter) with battery level indicator
• Built-in Cable: NO, 2.1A maximum output for fast charge from 2 x USB-A, 1 x USB-C
• Thinness: 0.3-inch
• Dimensions & Weight: 0.3″ x 2.7″ x 5.2″, 0.23 lbs

3. Attom Tech Dual Output Super Slim Power Bank 3000mAh

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• Capacity: 3000mAh with battery level indicator
• Built-in Cable: NO, 1 x USB-C and 1 x USB-A outputs
• Thinness: 0.35-inch
• Dimensions & Weight: 0.35″ x 2.1″ x 3.3″ (0.9cm x 5.3cm x 8.4cm), 2.2oz

4. Kolumb Ultra Slim Wallet Power Bank 2500mAh

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• Capacity: 2500mAh
• Built-in Cable: YES, 1 x micro USB with Lightning adapter, cable tucks into case.
• Thickness: 6mm (0.25-inch)
• Dimensions & Weight: 3.74 x 2.44 x 0.24 inches, 2.11 oz

5. Attom Tech with Built-in Cable Power Bank 2500mAh

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• Capacity: 2500mAh
• Built-in Cable: YES, 1 x microUSB with lightning adapter included
• Thickness: 0.25-inch
• Dimensions & Weight: 0.25″ x 3.8″ x 2.5″, 0.15lbs

6. Attom Tech with Built-in Cables Power Bank 5000mAh

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• Capacity: 5000mAh
• Built-in Cable: YES, 2 built-in cables (USB-C and micro USB) with lightning adapter and 1 USB-A output
• Thickness: 0.4-inch
• Dimensions & Weight: 0.4″ x 2.5″ x 4″ ( 1.3cm x 6.4cm x 10.5cm), 3.6oz

7. Vida IT vCard Slim Credit Card Power Bank 2500mAh

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• Capacity: 2500mAh
• Built-in Cable: YES, 1 x microUSB cable built-in with Lightning & USB-C adapters
• Thickness: 7mm
• Dimensions & Weight: 9.60 x 6.20 x 0.70 cm, 65 grams

8. VIDA IT vCard+ Slim Power Bank 4000mAh

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• Capacity: 4000mAh
• Built-in Cable: YES, 1 x microUSB with Lightning and USB-C adapters included
• Thinness: 8mm
• Dimensions & Weight: 115 x 66 x 8mm, 99 grams

Others

Portable pocket friendly power banks you can take with you wherever you, some even with convenient built-in charging cables. For the latest prices, click on links in our line-up below:

1. SlimVolt SlimCard power bank 2500 mAh Charger – BUILT-IN CABLE
2. iQualTech 2300 mAh Ultra Slim Pocket Power Bank with Fast-Charge
3. CHJGD® 2500 mAh Ultra Slim Credit Card Size Battery Charger – BUILT-IN CABLE
4. Joly Joy® Creative Credit Card 2200 mAh Power Bank
5. Power Theory Credit Card 2500 mAh Portable Charger with built-in USB & Lightning – BUILT-IN CABLE
6. WECODO 4000 mAh Credit Card Power Bank  Battery Charger built-in USB & Lightning – HIGH CAPACITY, BUILT-IN CABLE
7. iQualTech 2500mAh Super Slim Pocket Power Bank with Fast-Charge
8. Kolumb 2500mAh Ultra-Slim Ultra-Portable Wallet Pocket Power Card Power Bank – BUILT-IN CABLE
9. GMYLE® 2500 mAh Ultra-Thin Wallet Sized Battery Charger Built-in Lightning Cable – BUILT-IN CABLE
10. Retusa Power Bank 2500 mAh Battery Charger USB Credit Card Sized Built-in Micro USB – BUILT-IN CABLE
11. Yokkao® 4000 mAh Credit Card Power Bank Ultra-Slim 8.5mm with Built in Micro USB – HIGH CAPACITY, BUILT-IN CABLE
12. POWERGRID 2500 mAh Credit Card Sized Portable Battery Charger with Built-in USB – BUILT-IN CABLE
13. Lankoo 5000 mAh Power Bank Credit Card Size External Battery Charger Mobile Power – [HIGHEST CAPACITY]
14. Harryshell 3200 mAh Aluminum Ultra Thin Credit Card Size Power Bank – BUILT-IN CABLE
15. OREI 2000 mAh Super Ultra Slim Elegant Brushed Aluminum External Battery
16. Letouch 3200mAh Ultra Slim Lightweight Portable Credit Card Charger – BUILT-IN CABLE
17. Iceworks® 3000 mAh Deluxe In-Built Cable Portable Charger – BUILT-IN CABLE
18. Iceworks® 2500 mAh In-Built Cable Portable Power Bank – BUILT-IN CABLE

Choosing the Right Ultra Slim Credit Card Size Power Bank

Let’s take a comparative look between each of these pocket friendly power banks. Pay attention to the thickness and capacity of the battery. These batteries are fairly small in foot print to begin with, hence credit card size. Also consider the inclusion of built-in cable as this can be particularly useful if you do not wish to carry another cable.

1. SlimVolt SlimCard Power Bank 2500 mAh Charger – BUILT-IN CABLE

• Capacity: 2500mAh Li-Polymer in rubberised material that won’t scratch the phone
• Built-in Cable: YES, MicroUSB with Lightning Converter included. MicroUSB input.
• Thinness: 0.25 inches (6.35 mm)
• Dimensions & Weight: 4 inches x 0.25 inches x 2.3 inches, 2.24 ounces

Check Prices on Amazon: SlimVolt SlimCard

2. iQualTech 2300 mAh Ultra Slim Pocket Power Bank with Fast-Charge

• Capacity: 2300mAh Li-Polymer
• Built-in Cable: NO, USB port output. MicroUSB input.
• Thinness: 6 mm
• Dimensions & Weight: 86 x 54 x 6 mm, 50 grams (3.4 x 0.3 x 2.1 inches ; 1.8 ounces)

Check Prices on Amazon: iQualTech 2300 mAh

3. CHJGD® 2500 mAh Ultra Slim Credit Card Size Battery Charger – BUILT-IN CABLE

• Capacity: 2500mAh Lithium available in white plastic or silver metal body
• Built-in Cable: YES, MicroUSB with Lightning Converter included. MicroUSB input.
• Thinness: 5 mm – SLIMMEST
• Dimensions & Weight: 96 x 62 x 5 mm

Check Prices on Amazon: CHJGD® 2500 mAh

4. Joly Joy® Creative Credit Card 2200 mAh Power Bank

• Capacity: 2200mAh Li-Polymer in rubber coated body
• Built-in Cable: NO, USB port output. MicroUSB input.
• Thinness: 0.3 inches (7.6 mm)
• Dimensions & Weight: 3.7 x 0.3 x 2.5 inches

Check Prices on Amazon: Joly Joy® 2200 mAh

5. Power Theory Credit Card 2500 mAh Portable Charger with built-in USB & Lightning – BUILT-IN CABLE

• Capacity: 2500mAh Li-Polymer
• Built-in Cable: YES, MicroUSB with Lightning Converter included. MicroUSB input.
• Thinness: 0.24 inches (6.3 mm)
• Dimensions & Weight: 3.78 inches x 0.24 inches x 2.44 inches, 2.1 ounces. (95 x 62 x 6.3 mm) 60 grams

Check Prices on Amazon: Power Theory 2500 mAh

6. WECODO 4000 mAh Credit Card Power Bank  Battery Charger built-in USB & Lightning – HIGH CAPACITY, BUILT-IN CABLE

• Capacity: 4000mAh Li-Polymer
• Built-in Cable: YES, MicroUSB with Lightning Converter included. MicroUSB input.
• Thinness: 7 mm
• Dimensions & Weight: 110 x 68 x 7 mm / 4.5 x 2.6 x 0.25 inches. 96 grams

Check Prices on Amazon: WECODO 4000 mAh

7. iQualTech 2500mAh Super Slim Pocket Power Bank with Fast-Charge

• Capacity: 2500mAh Li-Polymer
• Built-in Cable: NO, USB port output, MicroUSB input
• Thinness: 0.3 inches (7.6 mm)
• Dimensions & Weight: 3.6 x 0.3 x 2.2 inches

Check Prices on Amazon: iQualTech 2500mAh

8. Kolumb 2500mAh Ultra-Slim Ultra-Portable Wallet Pocket Power Card Power Bank – BUILT-IN CABLE

• Capacity: 2500mAh Li-Polymer
• Built-in Cable: YES, MicroUSB with Lightning Converter included. MicroUSB input.
• Thinness: 0.2 inches (5 mm) – SLIMMEST
• Dimensions & Weight: 3.7 inches x 2.4 inches x 0.2 inches, 2.08 ounces

Check Prices on Amazon: Kolumb 2500mAh 

9. GMYLE® 2500 mAh Ultra-Thin Wallet Sized Battery Charger Built-in Lightning Cable – BUILT-IN CABLE

• Capacity: 2500mAh Li-Polymer
• Built-in Cable: YES, MicroUSB with Lightning Converter included. MicroUSB input.
• Thinness: 0.2 inches (5 mm) – SLIMMEST
• Dimensions & Weight: 3.7 x 2.4 x 0.2 inches (96 x 62 x 5mm), 66 grams

Check Prices on Amazon: GMYLE® 2500 mAh

10. Retusa Power Bank 2500 mAh Battery Charger USB Credit Card Sized Built-in Micro USB – BUILT-IN CABLE

• Capacity: 2500mAh Li-Polymer
• Built-in Cable: YES, MicroUSB with Lightning Converter included. MicroUSB input.
• Thinness: 0.23 inch (6.6 mm)
• Dimensions & Weight: 3.78 inch x 2.65 inch x 0.23 inch (96 x 62 x 6.6mm) 2.4 ounces

Check Prices on Amazon: Retusa 2500 mAh

11. Yokkao® 4000 mAh Credit Card Power Bank Ultra-Slim 8.5mm with Built in Micro USB – HIGH CAPACITY, BUILT-IN CABLE

• Capacity: 4000mAh Li-Polymer
• Built-in Cable: YES, MicroUSB with Lightning Converter included
• Thinness: 8.5 mm
• Dimensions & Weight: 115 x 66.5 x 8.5 mm, 100 grams

Check Prices on Amazon: Yokkao® 4000 mAh

12. POWERGRID 2500 mAh Credit Card Sized Portable Battery Charger with Built-in USB – BUILT-IN CABLE

• Capacity: 2500mAh Li-Polymer
• Built-in Cable: YES, MicroUSB with Lightning Converter included
• Thinness: 6.6 mm 
• Dimensions & Weight: 96 x 62 x 6.6 mm, 70 grams

Check Prices on Amazon: POWERGRID 2500 mAh

13. Lankoo 5000 mAh Power Bank Credit Card Size External Battery Charger Mobile Power – HIGHEST CAPACITY

• Capacity: 5000mAh Li-Polymer with 4-LED power indicator
• Built-in Cable: NO, USB port output with Magnet Micro USB cable included. MicroUSB input port.
• Thinness: 0.45 inches (11.5 mm)
• Dimensions & Weight: 3.66 inches x 2.48 inches x 0.45 inches

Check Prices on Amazon: Lankoo 5000 mAh

14. Harryshell 3200 mAh Aluminum Ultra Thin Credit Card Size Power Bank – BUILT-IN CABLE, METAL

• Capacity: 3200mAh Li-Polymer with 4 LED light indicator, Single Port 5V 1A Micro USB
• Built-in Cable: YES, Lightning Cable with Micro USB
• Thinness: 0.18 inches (5 mm) – SLIMMEST
• Dimensions & Weight: 5.9 x 2.8 x 0.19 inches, 3.39 ounces

Check Prices on Amazon: Harryshell 3200 mAh

15. OREI 2000 mAh Super Ultra Slim Elegant Brushed Aluminum External Battery – METAL

• Capacity: 2000mAh Li-Polymer Single Port 5V 1A Micro USB
• Built-in Cable: NO, requires Lightning Cable or Micro USB Cable. MicroUSB input.
• Thinness: 0.18 inches (5 mm) – SLIMMEST
• Dimensions & Weight: 2 x 0.2 x 3 inches ; 4 ounces

Check Prices on Amazon: OREI 2000 mAh

16. Letouch 3200 mAh Ultra Slim Lightweight Portable Credit Card Charger – BUILT-IN CABLE

• Capacity: 3200mAh Li-Polymer with 4 LED battery level indicator
• Built-in Cable: YES, Lightning Cable. MicroUSB input.
• Thinness: 6.5 mm
• Dimensions & Weight: 140 x 70 x 6.5 mm, 150 grams

Check Prices on Amazon: Letouch 3200 mAh

17. Iceworks® 3000 mAh Deluxe In-Built Cable Portable Charger – BUILT-IN CABLE

• Capacity: 3000mAh Li-Polymer
• Built-in Cable: YES, MicroUSB with Lightning Converter included. MicroUSB input.
• Thinness: 5 mm – SLIMMEST
• Dimensions & Weight: 98 x 66 x 5 mm

Check Prices on Amazon: Iceworks® 3000 mAh

18. Iceworks® 2500 mAh In-Built Cable Portable Power Bank – BUILT-IN CABLE

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• Capacity: 2500 mAh Li-Polymer with LED indicator
• Built-in Cable: YES, MicroUSB with Lightning Converter included. MicroUSB input.
• Thinness: 5 mm – SLIMMEST
• Dimensions & Weight: 95 x 62 x 5 mm; weighs 59 grams

Check Prices on Amazon: Iceworks® 2500 mAh