Slim Credit-card Size Power Bank

How to Choose a Slim Card Power Bank

Slim card power banks compete on one promise: a full charge that disappears into a wallet or a jacket pocket. Buyers in this category judge by thickness and weight first, capacity second — which is why 5,000mAh dominates the segment and 10,000mAh units only work when the cell and housing are genuinely thin.

Check the real dimensions rather than the marketing name. A card-size unit is typically 8-12mm thick and under 150g; anything above that is a different product in the buyer's hand. Confirm whether the connector is built in or a short cable is included, and whether the unit supports pass-through charging.

For corporate and promotional buyers, the shell is the product: full-surface printing, soft-touch coating and metal finishes all change perceived value. Ask for a pre-production sample with your artwork before committing, because colour accuracy on coated shells is the most common disappointment.

Capacity expectations should be set in the listing: a 5,000mAh pack delivers roughly one phone charge, depending on the device. Export orders include CE, FCC, RoHS and UN38.3 documentation and can ship with gift boxes or branded sleeves.

Customization and Compliance

• Thickness options from 8mm; aluminium, ABS and soft-touch finishes.
• Full-surface printing, laser logo and gift-box packaging for promotional orders.
• Connector choices: built-in USB-C, Lightning, micro-USB or dual cable.
• Compliance: CE, FCC, RoHS, UN38.3; manuals localised for your market.