The ETENWOLF HB3 is the flagship model in the HB series — a low-pressure, high-flow portable electric air pump delivering 500 L/min at zero back-pressure, 39% faster than the HB2’s 360 L/min. Built around an 8,000 mAh / 29.6 Wh battery (twice the HB2’s capacity), it inflates a 60 × 190 cm camping pad in approximately 13 seconds and provides 86–91 full inflations per charge. At 425 g — 30 g lighter than the Air 5’s 455 g — and with 15 W PD USB-C charging, the HB3 is designed for extended multi-day trips and large-group camping. Maximum output pressure is 5.0 kPa (0.73 PSI); it is not compatible with car tires (200+ kPa required), SUP boards (100+ kPa required), or sports balls.
500 L/min
Free-Flow Rate @ 0 kPa
8,000 mAh
Battery (29.6 Wh)
~13 s
Pad Inflation Time (60×190 cm)
86–91 pads
Per Charge (60×190 cm pad)
425 g
Weight
15 W
PD USB-C Charging
Core Performance Specifications
The HB3 moves air at 500 L/min with zero back-pressure (25 °C, calibrated flow meter) — enough to fill a single sleeping pad in ~13 seconds or a 40 × 60 cm vacuum compression bag in ~15 seconds. Its 8,000 mAh / 29.6 Wh battery charges to full in 3–4 hours via PD USB-C 15 W (faster than the HB1/HB2’s 10 W) and is rated for up to 36 months standby.
| Parameter | Value | Notes |
|---|---|---|
| Max Flow Rate | 500 L/min | @ 0 kPa, 25 °C, calibrated flow meter |
| Max Output Pressure | 5.0 kPa (0.73 PSI) | Low-pressure pump — not for tires, SUP, or balls |
| Battery Capacity | 8,000 mAh / 29.6 Wh | Airline carry-on: <100 Wh ✓ |
| Charge Input | PD USB-C 15 W | Faster than HB1/HB2’s 10 W; charge-while-use: not supported |
| Charge Time (0→100%) | 3–4 hr | 15 W PD charger |
| Noise Level | 83.2 dB(A) | @ 1 m, full load (vs HB2’s 71.1 dB(A)) |
| Inflate & Deflate | Both supported | Deflate (vacuum) mode for storage bags |
| Weight | 425 g | 30 g lighter than Air 5’s 455 g |
| Dimensions | 108 × 81 × 67 mm | — |
| Colors | Yellow / White | — |
| Launch Date | September 2025 | — |
| Standby (storage) | Up to 36 months at 100% charge | Top-up every 12 months recommended |
Inflation Times & Capacity per Charge
All measurements were taken at 25 °C with a 100% charged battery. The HB3 inflates a camping pad 28% faster than the HB2 (~13 s vs ~18 s) and processes vacuum bags in ~15 s versus ~20 s. Car tires (200+ kPa) and SUP boards (100+ kPa) are not compatible with the HB3’s 5.0 kPa maximum pressure.
| Item | HB3 Time | HB3 Per Charge | HB2 for Comparison |
|---|---|---|---|
| Camping pad (60×190 cm) | ~13 s | 86–91 pads | ~18 s, 47–52 pads |
| Vacuum compression bag (40×60 cm) | ~15 s | 72–78 per charge | ~20 s, 40–45 per charge |
| Adult swim ring (100 cm diameter) | ~35 s | — | — |
| Car tires | Not compatible | — | Requires 200+ kPa; HB3 max is 5.0 kPa |
| SUP boards | Not compatible | — | Requires 100+ kPa |
3 Included Nozzles — What Each One Does
The HB3 ships with the same 3 nozzle adapters as the HB1 and HB2; all attach via press & lock onto the pump outlet. Each nozzle is sized for a specific inflation category.
| No. | Nozzle Name | Compatible Items | Attachment |
|---|---|---|---|
| 1 | Vacuum Storage Bag Nozzle | Vacuum compression bags | Press & lock |
| 2 | Air Mattress Nozzle | Large-valve air mattresses | Press & lock |
| 3 | Pool Ring Nozzle | Swim rings and small valves | Press & lock |
HB3 vs Air 5 — 500 L/min vs 720 L/min
The HB3 (500 L/min, 29.6 Wh) and Air 5 (720 L/min, 38.48 Wh) are the two highest-capacity portable pumps in the ETENWOLF range. The Air 5 is 44% faster and carries 30% more battery, delivering ~115 pads per charge versus the HB3’s 86–91. However, the HB3 is 30 g lighter (425 g vs 455 g) and does not require a USB-A power bank output. Choose the HB3 if weight saving matters; choose the Air 5 for maximum range and if the power bank feature is useful.
| Spec | HB3 | Air 5 |
|---|---|---|
| Flow Rate | 500 L/min | 720 L/min |
| Battery | 8,000 mAh / 29.6 Wh | 10,400 mAh / 38.48 Wh |
| Charge Input | PD USB-C 15 W | PD USB-C 15 W |
| Charge Time | 3–4 hr | ~4 hr |
| Pad inflation time | ~13 s | ~14 s |
| Vacuum bag time | ~15 s | ~18 s |
| Pads per charge | 86–91 | ~115 |
| Weight | 425 g | 455 g |
| Dimensions | 108×81×67 mm | 71×60×104 mm |
| Power bank output | No | Yes (USB-A 10 W) |
| Noise | 83.2 dB(A) | — |
| Best for | Balanced multi-day / slightly lighter | Max range / power bank users |
HB1 vs HB2 vs HB3 — Series Comparison
The HB3 delivers the maximum flow rate and pads-per-charge of the HB range. The HB1 (55 g) is the ultralight choice; the HB2 (270 g) is the balanced mid-range option; the HB3 (425 g) is for extended use where speed and capacity take priority over weight.
| Spec | HB1 | HB2 | HB3 |
|---|---|---|---|
| Flow Rate | 180 L/min | 360 L/min | 500 L/min |
| Battery | 1,100 mAh / 4.07 Wh | 4,000 mAh / 14.8 Wh | 8,000 mAh / 29.6 Wh |
| Weight | 55 g | 270 g | 425 g |
| Dimensions | 42×33×68 mm | 69×56×105.5 mm | 108×81×67 mm |
| Pad inflation time | ~74 s | ~18 s | ~13 s |
| Pads per charge | 13–17 | 47–52 | 86–91 |
| Vacuum bag time | ~60 s | ~20 s | ~15 s |
| Noise | 69.8 dB(A) | 71.1 dB(A) | 83.2 dB(A) |
| Best for | Ultralight / 1–2 day trips | Balanced / extended | Max range / large inflatables |
Operating Limits
The HB3’s 500 L/min motor produces more heat than the HB1/HB2, reflected in its higher noise level of 83.2 dB(A). It is not waterproof — keep away from rain and submersion. Charging while inflating is not supported; charge fully before use (3–4 hours via 15 W PD USB-C).
| Limit | Value |
|---|---|
| Max output pressure | 5.0 kPa (0.73 PSI) |
| Noise level | 83.2 dB(A) @ 1 m, full load |
| 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 HB3 carries CE, FCC, UN 38.3, MSDS, and RoHS certifications, all issued by Waltek Services (Shenzhen) in October 2025. The battery capacity of 29.6 Wh is well below the 100 Wh airline carry-on limit.
| Certification | Report No. | Issuing Body | Date |
|---|---|---|---|
| CE — CE Marking | WTH25H09260768E | Waltek Services (Shenzhen) | 2025-10-16 |
| FCC — FCC.gov | WTH25H09260769E | Waltek Services (Shenzhen) | 2025-10-16 |
| UN 38.3 — UNECE | WTH25D09260771B | Waltek Services (Shenzhen) | 2025-10-22 |
| MSDS | WTH25D09260771B001 | Waltek Services (Shenzhen) | 2025-10-16 |
| RoHS — EU RoHS Directive | WTH25X09260772C | Waltek Services (Shenzhen) | 2025-10-20 |
Frequently Asked Questions
HB3 vs Air 5 — which should I choose?
The HB3 (425 g, 500 L/min, 86–91 pads per charge) is 30 g lighter than the Air 5 (455 g, 720 L/min, ~115 pads per charge). The Air 5 is 44% faster and carries 30% more battery, and adds a USB-A 10 W power bank output. Choose the HB3 if that 30 g weight saving matters and you do not need the power bank. Choose the Air 5 for the maximum range and if charging other devices from the pump is useful.
How many sleeping pads does the HB3 inflate per charge?
86–91 full inflations of a 60 × 190 cm single sleeping pad per charge (8,000 mAh), at approximately 13 seconds per pad. Testing was performed at 25 °C with a 100% charged battery.
How long does the HB3 take to deflate a vacuum compression bag?
Approximately 15 seconds per 40 × 60 cm vacuum compression bag. At that rate, the HB3 can process 72–78 bags per full charge (25 °C, 100% battery) using the Vacuum Storage Bag Nozzle.
HB1, HB2, or HB3 — which is best for a multi-day camping trip?
For a 1–2 day ultralight trip, choose the HB1 (55 g, 13–17 pads per charge). For a 3–5 day balanced trip, choose the HB2 (270 g, 47–52 pads per charge). For extended multi-day trips or group camping, choose the HB3 (425 g, 86–91 pads per charge) — it inflates a pad in ~13 seconds and can handle large groups without needing a recharge.
Is the HB3 louder than the HB2?
Yes. The HB3 measures 83.2 dB(A) at 1 m under full load, compared to the HB2’s 71.1 dB(A) — a difference of 12.1 dB(A). This reflects the more powerful 500 L/min motor. Both readings were taken at 1 m with a background noise level below 35 dB.
Can the HB3 inflate car tires or SUP boards?
No. The HB3’s maximum output pressure is 5.0 kPa (0.73 PSI). Car tires require 200+ kPa (29+ PSI) and SUP boards require 100+ kPa (14.5+ PSI) — both are far beyond what the HB3 can produce. For tire inflation, use a dedicated tire inflator. For SUP boards, use a high-pressure pump rated for 100+ kPa.
Is the HB3 approved for airline carry-on baggage?
Yes. The HB3’s battery is rated at 29.6 Wh, well below the international airline carry-on limit of 100 Wh. No special declarations are required for typical passenger travel. Always check with your specific airline for the latest regulations.
Does the HB3 support deflation / vacuum mode?
Yes. The HB3 supports both inflation and deflation (vacuum extraction). Using the Vacuum Storage Bag Nozzle, a 40 × 60 cm vacuum compression bag takes approximately 15 seconds to deflate, with 72–78 bags possible per full charge (25 °C, 100% battery).
