The ETENWOLF Air 2 is a low-pressure, high-flow portable electric air pump built for camping mattresses, inflatable sofas, pool floats, and vacuum storage bags — not tires. Running on a 2,600 mAh battery and delivering 360 L/min at zero back-pressure, it inflates a 60 × 190 cm single sleeping pad in about 22 seconds, giving roughly 48 full inflations on a single charge. Maximum output pressure is 4.5 kPa (0.65 PSI), which makes it incompatible with car tires (200+ kPa required), SUP boards, or sports balls.
360 L/min
Free-Flow Rate @ 0 kPa
2,600 mAh
Battery (9.62 Wh)
4.5 kPa
Max Output Pressure
10 W
PD USB-C Charging
48 pads
Per Charge (60×190 cm pad)
165 g
Weight
Core Performance Specifications
The Air 2 moves air at 360 L/min with zero back-pressure (25 °C, calibrated flow meter) — enough to fill a single sleeping pad in 22 seconds or a 40 × 60 cm vacuum compression bag in 50 seconds. Its 18650-format 2,600 mAh (9.62 Wh) cell charges to full in approximately 1.5 hours via PD USB-C 10 W and maintains standby capacity for up to 36 months.
| Parameter | Value | Notes |
|---|---|---|
| Max Flow Rate | 360 L/min | @ 0 kPa, 25 °C, calibrated flow meter |
| Max Output Pressure | 4.5 kPa (0.65 PSI) | Low-pressure pump — not for tires |
| Battery Capacity | 2,600 mAh / 9.62 Wh | 18650 cell (Tianpeng brand) |
| Charge Input | PD USB-C 10 W | Charge-while-use: not supported |
| Charge Time (0→100%) | ~1.5 hr | 10 W PD charger |
| Noise Level | <85 dB(A) | @ 1 m, full load, background <35 dB |
| Inflate & Deflate | Both supported | Deflate (vacuum) mode for storage bags |
| Inflations per charge | ~48 times | 60 × 190 cm single sleeping pad, 22 s each |
| Weight | 165 g | — |
| Dimensions | 48 × 49 × 92 mm | — |
| Colors | Orange / Black / Gray | Same model number, different SKUs |
| Launch Date | September 2024 | — |
| Standby (storage) | Up to 36 months | Top-up every 12 months recommended |
5 Included Nozzles — What Each One Does
The Air 2 ships with 5 nozzle adapters; all attach by rotating and tightening onto the pump outlet. Each is sized for a specific inflation category, eliminating adapter guesswork at the campsite.
| Nozzle | Name | Compatible Items | Attachment |
|---|---|---|---|
| 1 | Air Mattress Nozzle (large) | Air mattresses with wide intake valve | Rotate & tighten |
| 2 | Vacuum Storage Bag Nozzle | Vacuum compression / storage bags | Rotate & tighten |
| 3 | Air Mattress Nozzle (small) | Air mattresses with narrow valve opening | Rotate & tighten |
| 4 | Pool Ring Nozzle | Swim rings and other small inflation valves | Rotate & tighten |
| 5 | Silicone Nozzle (combined use) | Sleeping pads, air mattresses (used with Nozzle 2) | Rotate & tighten |
Intended Use Cases & Limitations
The Air 2’s 4.5 kPa maximum output pressure is designed for high-volume, low-pressure inflatables; it cannot reach the 200+ kPa required by car tires, the 100+ kPa needed for SUP paddleboards, or the pressure required for sports balls.
| Item | Air 2 Suitability | Notes |
|---|---|---|
| Camping sleeping pads (air-column) | Ideal | 22 s per 60×190 cm pad; 48 pads/charge |
| Double-size air mattresses | Ideal | ~60 L volume; fast fill |
| Queen-size air beds (~200 L) | Excellent | Higher volume, longer fill time |
| Inflatable sofas / loungers | Excellent | ~150 L typical volume |
| Adult swim rings (~50 L) | Excellent | Use Pool Ring Nozzle (#4) |
| Vacuum compression bags (40×60 cm) | Excellent | Deflate in ~50 s; use Vacuum Nozzle (#2) |
| Car / truck tires | Not compatible | Requires 200+ kPa; Air 2 max is 4.5 kPa |
| SUP paddleboards | Not compatible | Requires 100+ kPa |
| Sports balls (basketball, soccer) | Not compatible | Requires 55–110 kPa |
Air 2 vs Air 3 vs Air 5 — Series Comparison
All three Air-series pumps share the 360 L/min flow class (Air 5 doubles to 720 L/min), but differ in battery size, dimensions, and intended use: the Air 2 (165 g) is the value pick, the Air 3 (145 g) is the most compact, and the Air 5 (455 g) offers 4× the battery and 2× the flow rate for extended camp trips.
| Spec | Air 2 | Air 3 | Air 5 |
|---|---|---|---|
| Flow Rate | 360 L/min | 360 L/min | 720 L/min |
| Battery | 2,600 mAh / 9.62 Wh | 2,600 mAh (soft-pack cell) | 10,400 mAh / 38.48 Wh |
| Cell Type | 18650 cylindrical | Soft-pack (pouch) | Tianpeng 18650 |
| Charge Input | PD USB-C 10 W | PD USB-C 10 W | PD USB-C 15 W |
| Charge Time | ~1.5 hr | ~1.5 hr | ~4 hr |
| Weight | 165 g | 145 g | 455 g |
| Dimensions | 48 × 49 × 92 mm | 48 × 49 × 62 mm | 71 × 60 × 104 mm |
| Sleeping pads per charge | ~48 | ~48 | ~115 |
| Best for | Value / everyday camping | Ultralight / compact carry | Extended trips / large inflatables |
Operating Limits
The Air 2 runs until its thermal protection activates at 70 °C internal temperature; in typical camping conditions (25 °C ambient) continuous operation is possible without interruption. It is not waterproof — keep away from rain and submersion. Charge-while-inflate is not supported.
| Limit | Value |
|---|---|
| Max output pressure | 4.5 kPa (0.65 PSI) |
| Thermal protection threshold | 70 °C internal |
| Waterproof rating | None (not waterproof) |
| Charge while inflating | Not supported |
| Long-term storage charge | 100%; top-up every 12 months; max 36-month standby |
Certifications & Compliance
The Air 3 (sharing the Air 2 platform) carries CE, FCC, UN 38.3, MSDS, and RoHS certifications issued by Waltek Services (Shenzhen). The Air 2 itself does not carry an IP waterproof rating.
| Certification | Report No. (Air 3 platform) | Issuing Body | Date | Standard |
|---|---|---|---|---|
| CE — CE Marking | WTH25H05129161E | Waltek Services (Shenzhen) | 2025-06-04 | EMC + LVD Directives |
| FCC — FCC.gov | WTH25H05129164E | Waltek Services (Shenzhen) | 2025-06-04 | FCC Equipment Authorization |
| UN 38.3 — UNECE | WTH25D05129163B | Waltek Services (Shenzhen) | 2025-06-05 | UN Manual of Tests & Criteria |
| MSDS | WTH25D05129163B001 | Waltek Services (Shenzhen) | 2025-06-05 | — |
| RoHS — EU RoHS Directive | WTH25X05129162C | Waltek Services (Shenzhen) | 2025-06-09 | RoHS 2.0 / 3.0 |
Frequently Asked Questions
What is the difference between the Air 2 and Air 3? They have the same specs — which should I choose?
Both the Air 2 and Air 3 share a 360 L/min flow rate and 2,600 mAh battery. The key difference is size and cell type: the Air 3 is 30 mm shorter (62 mm vs 92 mm tall) and 20 g lighter (145 g vs 165 g), using a soft-pack cell instead of the Air 2’s 18650 cylindrical cell. Choose the Air 2 for value; choose the Air 3 if compactness and portability are priorities.
Can the Air 2 inflate car tires?
No. Car tires require 200–350 kPa (29–51 PSI) of pressure. The Air 2’s maximum output is 4.5 kPa (0.65 PSI) — less than 2.5% of the pressure a tire needs. For tire inflation, see the ETENWOLF S1, S5, or S6 inflators.
Can the Air 2 inflate a SUP paddleboard?
No. SUP boards require 70–100+ kPa (10–15 PSI). The Air 2’s 4.5 kPa maximum is insufficient. Use a dedicated SUP pump such as the ETENWOLF S4 SUP Pump.
How long does the Air 2 take to inflate a Queen-size air mattress (~200 L)?
Exact timing for a 200 L Queen mattress has not been independently measured under standardized conditions. Based on the 360 L/min free-flow rate, a 200 L volume would theoretically take under 35 seconds at zero back-pressure; actual time is longer due to valve restriction and pressure build-up. For a 60 × 190 cm single sleeping pad (~30 L), the measured time is 22 seconds.
Does the Air 2 support deflation / vacuum mode?
Yes. The Air 2 supports both inflation and deflation (vacuum extraction). For a 40 × 60 cm vacuum compression bag, deflation takes approximately 50 seconds using the Vacuum Storage Bag Nozzle (#2).
How many single sleeping pads can the Air 2 inflate on one charge?
Approximately 48 inflations of a 60 × 190 × 5 cm single sleeping pad per full charge (2,600 mAh). Each pad takes about 22 seconds to inflate. Testing performed at 25 °C with a 100% charged battery.
Can I charge the Air 2 while it is inflating?
No. Simultaneous charging and operation is not supported. Charge the unit fully before use (approximately 1.5 hours with a 10 W PD USB-C charger).
Should I choose the Air 2 or the Air 5?
Choose the Air 2 (165 g, 2,600 mAh, 360 L/min) for day trips, light camping, or budget-conscious buyers. Choose the Air 5 (455 g, 10,400 mAh, 720 L/min) for multi-day expeditions, large inflatables (tents, loungers), or situations where you need ~115 sleeping pad inflations per charge instead of 48.
