What if my power bank has no Wh label?
- Last reviewed
- Ruleset
- 2026-05-15
- Reviewed by
- CertiWatt source integrity workflow
Short answer: If your power bank has no readable Wh label, bring manufacturer evidence and verify the model before travel. Airport staff may refuse a device when capacity cannot be confirmed.
A clear device label is often the easiest way to show that a power bank is under the relevant limit. When the label is missing, scratched, or only shows mAh, the decision becomes harder for frontline staff.
Manufacturer specification pages can help. A product page, PDF manual, or official support page that lists Wh, mAh, voltage, and model number is stronger than a marketplace listing.
CertiWatt resolves many known models directly from the catalog. If the model is unknown, the verifier can still return an informational verdict from manually entered label values.
Rule summary
- Best evidence
- Readable device label with Wh and model number.
- Backup evidence
- Official manufacturer spec page or manual.
- mAh only
- Convert to Wh, but expect staff to prefer official evidence.
- Unknown model
- Use manual-entry fallback and treat uncertainty seriously.
Check your device
The final answer can change by model, airline, country, certification mark, label evidence, and recall status.
Search or enter label specsFAQ
Can I fly with a power bank that only shows mAh?
Often yes if it is clearly below limits, but some staff may require Wh or a manufacturer specification.
Is a screenshot enough?
A screenshot of an official manufacturer page is more useful than a marketplace listing, but final acceptance is still up to staff.
Can CertiWatt identify my model?
For covered models, CertiWatt uses catalog specs. For unknown models, it can still reason from label values if the traveler enters them.
Sources and evidence
This guide is reviewed against CertiWatt ruleset 2026-05-15. Active rule citations pass the source integrity release gate before deployment; trip-specific verdicts can still cite additional regulator, airline, manufacturer, or recall sources.
Informational only. Final decision rests with airline and security staff. Why we said this.