Is the Anker Prime Power Bank (27K, 250W) allowed on Delta Air Lines flights from United States?
Short answer: Conditional. Below is the citation-backed reasoning, the specific conditions if any, and what to do at security.
Ruleset age warning: This ruleset is 59 days old. Battery rules can change quickly; re-check close to departure before treating this verdict as current.
Last reviewed
May 15, 2026
Ruleset
2026-05-15
Sources checked
3
Verdict source gate
passed
Verdictvdt_68903WSKQ70YHY95SC267Y6XGK
Conditional
99.54WhAnker Prime Power Bank (27K, 250W)
Allowed only with specific conditions. See below. (This power bank is derived from mAh and sits effectively on the 100 Wh passenger threshold; confirm the printed Wh label before treating it as allowed.)
Operating carrier policy context
Delta Air Lines DL
Confidence
Airline official
Delta is tracked from its official prohibited/restricted-items page; US departures also apply TSA/FAA carry-on-only handling for spare lithium batteries and power banks.
Source tier: officialchecked: 2026-05-31
Key constraints
Quantity
Delta's published battery guidance is modeled through baseline spare-battery limits; no separate power-bank-only quantity rule is active.
Watt-hour limit
Power banks: plan around the 2026 passenger-facing 100 Wh limit. Generic 100-160 Wh lithium-battery approval language is not shown as a power-bank allowance unless the airline source explicitly says so.
Carry-on
Allowed when within capacity, label, and recall rules.
Checked baggage
Not allowed for spare lithium batteries and power banks.
This unit is within 5 Wh of the 100 Wh limit. Security may read the label or recompute from mAh; keep the Wh label visible.
03
Derived from mAh: 99.5 Wh at 3.6 V, 102.3 Wh at 3.7 V. Printed label takes precedence.
Notes
Wh value (99.54) is at the 100 Wh threshold and is not manufacturer-stated. Use the printed Wh label or manufacturer specification before relying on an allowed verdict.
Issued2026-07-13 · ruleset 2026-05-15
Report airport outcome
If airport staff refused this device or this verdict looks wrong, send the verdict ID and route back for review.
“Delta is tracked from its official prohibited/restricted-items page; US departures also apply TSA/FAA carry-on-only handling for spare lithium batteries and power banks.”
Global source-monitor health is tracked on the compliance page; this verdict page only shows the citations actually used for this answer.
Citation freshness: The weakest source freshness is 74 days old against a 30-day regulator SLA; re-check close to departure before relying on this verdict.
Why this verdict
CertiWatt evaluates the product capacity, departure jurisdiction, operating carrier, published dangerous-goods policy, and active recall evidence before returning a verdict.
Decisive rule
Allowed only with specific conditions. See below. (This power bank is derived from mAh and sits effectively on the 100 Wh passenger threshold; confirm the printed Wh label before treating it as allowed.)
No active model-specific recall matched this verdict.
status: not_affected
Citation freshness
3 sources checked
Oldest cited source: Apr 30, 2026
Capacity evidence for this model
Auxiliary calculation
27,650 mAh × 3.6 V ÷ 1000 = 99.54 Wh
Threshold comparison
0.46 Wh below the passenger power-bank 100 Wh limit. The printed Wh label still takes precedence over mAh estimates.
Route-specific signals
These page-specific checks make this verdict about this model, this departure country, and this airline, not a generic power-bank answer.
Anker Prime Power Bank (27K, 250W) is recorded at 99.54 Wh and 27650 mAh, so the capacity check is tied to this exact catalog model.
United States is evaluated as the departure jurisdiction for country-specific power-bank overlays.
Delta Air Lines (DL) is evaluated as the operating carrier, with its published dangerous-goods policy included in the citation set.
Anker Prime Power Bank (27K, 250W) has no active recall link in this catalog record, so the verdict is driven by capacity, route, airline, label, and rule evidence.
Allowed only with specific conditions. See below. (This power bank is derived from mAh and sits effectively on the 100 Wh passenger threshold; confirm the printed Wh label before treating it as allowed.)
Rules applied
us.tsa.2025-03.no-checked
iata.passenger-guidance.power-bank-threshold.2026
About the Anker Prime Power Bank (27K, 250W)
Capacity
27650 mAh
Watt-hours
99.54 Wh
Voltage
3.6 V
Certifications
UN38.3
What to prepare before security
Keep the power bank in cabin baggage only, never checked baggage.
Make sure the Wh or mAh label is readable, or keep the manufacturer specification page available.
Use the linked citations below if staff ask why the device was flagged.
How to handle this verdict at airport security
For Conditional or Banned results, prepare evidence before you reach screening and keep the conversation factual.
1
Prepare battery documents
Have a readable Wh label or clear mAh/voltage label, any required 3C certificate or 3C mark for China-related screening, and the manufacturer specification or proof page saved offline.
2
Explain it clearly at screening
Say that the item is a lithium-ion power bank for cabin baggage only, show the Wh rating and manufacturer evidence, and point to the relevant airline or regulator citation if staff ask.
3
If it is refused, escalate safely
Ask for the specific reason, request airline or security supervisor review if available, and be ready to leave the device behind, ship it separately where legal, or use a compliant replacement. Do not move a rejected power bank into checked baggage.
Compliant alternatives for this route
These catalog models stay below the ordinary approval band and are filtered against this departure country before they are shown.
The verdict above is for the standard Anker Prime Power Bank (27K, 250W). If your unit has a different serial number range — especially for recalled models — verify directly:
Informational only. Final decision rests with airline and security staff. Why we said this.
All public source records used by CertiWatt are listed in the source registry. Sources.
Common questions for this exact trip
Is this a guarantee at the airport?
No. This is an informational verdict based on published sources. Airline and security staff retain final authority.
Why can the same power bank get different answers by country or airline?
Power-bank rules combine global battery limits with country overlays, airline policies, storage rules, and recall notices.
When should I re-check this route?
Re-check close to departure, especially when the trip involves China, Thailand, Korea, a recalled model, or a battery near a capacity limit.