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Custom 4000mAh Power Banks | Branded Chargers

Custom 4000mAh Slim Power Banks With Single-Colour Pad Printed Branding For Events, Staff Gifts, Promotions And Corporate Merchandise.

We offer free mainland UK delivery across all our products as standard, with no hidden fees.

Important Design Confirmation

Once your design has been approved, we begin the printing process right away to ensure timely delivery. At that stage, we're unable to make any further changes to the customisation—so please double-check all names, dates, and details before confirming.

Product Description for Custom 4000mAh Power Banks | Branded Chargers

Custom power banks provide useful branded technology for events, staff gifts, welcome packs and promotional merchandise. The current slim model has a 4000mAh Grade A lithium-polymer battery housed in a compact aluminium body.

The unit is approximately 68 x 109 x 9mm and weighs around 122g. Standard branding uses a single-colour pad print within an approximately 70 x 30mm area. This process suits logos, short text and uncomplicated graphic marks rather than photographic designs.

Keep artwork bold and legible at the finished size. The aluminium surface and compact print zone reward simple vector artwork with strong contrast. Full-colour branding requires a different or bespoke specification where available.

Prepare the design to the current 70 x 30mm print area. Supply vector PDF artwork using one approved spot colour for standard pad printing.

Outline or embed fonts, convert strokes to filled shapes and avoid gradients, photographic artwork, hairlines and very tight spacing. Keep the complete design inside the defined branding area.

The aluminium case can affect perceived ink contrast, so choose a print colour that remains clear against the selected power-bank finish.

Technical Specifications – Custom 4000mAh Power Banks

Model: Slim promotional power bank.

Capacity: 4000mAh.

Battery: Grade A lithium-polymer.

Housing: Aluminium.

Dimensions: Approximately 68 x 109 x 9mm; current weight around 122g.

Branding: Single-colour pad print.

Print Area: Approximately 70 x 30mm.

Artwork: Vector PDF using a single approved spot colour; fonts outlined/embedded and strokes converted to shapes where appropriate.

Production Note: This product contains a rechargeable battery and should be handled, charged and transported in accordance with the supplied product instructions.

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Most Design Is Made for Screens—Make Yours Work in Print

Print has different rules—resolution, colour, finishes, scale. We’ll refine, rebuild, or create artwork that reproduces beautifully, so your printed materials do the job they’re meant to do.

Frequently Asked Questions

Custom 4000mAh Power Banks | Branded Chargers FAQs

The current slim model has a 4000mAh battery capacity.

The current specification uses a Grade A lithium-polymer battery.

The housing is aluminium.

The current unit is approximately 68 x 109 x 9mm and weighs around 122g.

Standard branding uses a single-colour pad print in an approximately 70 x 30mm area.

Use clean vector artwork in one approved spot colour, with fonts outlined and fine detail kept to a minimum.

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Get A Free Catalogue & Sample Pack

Our catalogue and sample pack are packed with great examples, specs, formats, stocks and finishes to help you choose with confidence. Get in touch when you’re ready—there’s far more we can do than what fits on these pages.

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