A practical buying guide for B2B buyers covering print resolution, connectivity, battery life, media compatibility, and regional compliance certifications.
1. Print Resolution and Quality
Thermal mini printers typically offer 200 to 300 DPI. For barcode and small text labels, 300 DPI is recommended. 200 DPI is sufficient for receipts, notes, and simple graphics. miniprt models use a 300 DPI print head with 8 dots/mm density for sharp output on 57mm thermal paper.
2. Connectivity Options
Bluetooth 5.0 is the current standard for portable printers. It offers 10-meter range and stable connection. Some models add USB-C for wired printing. NFC one-tap pairing is available on newer models and reduces setup time for fleet deployments.
3. Battery Life and Charging
Look for lithium polymer batteries rated at 1500 mAh or higher. This supports 8+ hours of intermittent use or printing 10+ rolls continuously. USB-C charging at 5V/2A is preferred for fast charging. Avoid micro-USB models as they charge slower.
4. Media Compatibility
Most portable mini printers use 57mm x 30mm thermal paper rolls. Some models also support adhesive label rolls for shipping and inventory labels. Check if the printer supports both paper types without needing a separate adapter.
5. App Features and SDK Access
The companion app should support text printing, image printing, barcode generation, and template editing. For B2B buyers, check if the manufacturer provides an SDK or API for integrating printing into your own software. miniprt offers Android and iOS SDKs for custom integration.
6. Regional Certifications
Certification requirements vary by target market:
- North America: FCC, UL
- European Union: CE, RoHS, WEEE
- Japan: PSE, VCCI
- Australia: RCM, C-Tick
7. MOQ and Lead Time
For wholesale buyers, MOQ typically ranges from 50 to 500 units depending on the model and customization requirements. Standard lead time is 15-25 working days. Custom branding and packaging add 7-10 working days. Sample orders usually ship within 3-5 working days.