The ETENWOLF P300 is a smart cordless electric ball pump with a 2,600 mAh / 9.62 Wh (Tianpeng) battery, 6.5 L/min airflow, and four preset inflation modes: Basketball (8 PSI), Soccer (10 PSI), Football (13 PSI), and Custom. It inflates a size-7 basketball from 0 to 8 PSI in 50 seconds and delivers 95 full basketball inflations per charge. The dual-port design separates the inflation inlet (INF) from the deflation outlet (DEF), preventing accidental reverse airflow. Auto-shutoff accuracy is ±0.5 PSI across the full 2–17 PSI range.
50 s
Basketball 0→8 PSI
95 balls
Per Charge (Basketball)
4 Modes
Preset Inflation Modes
±0.5 PSI
Auto-Shutoff Accuracy
2,600 mAh
Battery (9.62 Wh, Tianpeng)
244 g
Weight
Core Performance Specifications
The P300 operates at 6.5 L/min with a 2–17 PSI pressure range and auto-stops within ±0.5 PSI of any target pressure. The 2,600 mAh Tianpeng cell (9.62 Wh) charges in approximately 82 minutes via PD USB-C 10 W; accuracy is unaffected at battery levels below 20%. Dual INF/DEF ports both use the 8V1 standard interface; inserting the needle into the wrong port triggers an error rather than damaging the ball.
| Parameter | Value | Notes |
|---|---|---|
| Flow Rate | 6.5 L/min | @ 0 PSI, 25 °C |
| Pressure Range | 2–17 PSI | E22 error triggers above 17 PSI |
| Auto-Shutoff Accuracy | ±0.5 PSI | Full range, all modes; unaffected below 20% battery |
| Battery | 2,600 mAh / 9.62 Wh | Tianpeng brand cell |
| Charge Input | PD USB-C 10 W | Charge-while-use: not supported |
| Charge Time | ~82 min | 0→100%, 10 W charger |
| Ports | INF (inflate) + DEF (deflate) | Both 8V1 interface; mis-insert triggers error, no damage |
| Weight | 244 g | — |
| Launch Date | January 2023 | — |
| Storage standby | Up to 36 months | Store at 100%; top-up as needed |
4 Preset Inflation Modes
The P300’s four preset modes auto-stop at sport-specific target pressures; Custom mode accepts any value in the 2–17 PSI range. Volleyball is supported via Custom mode set to 4.5 PSI.
| Mode | Default Target | Ball | Time (0→target, 25 °C) | Balls per charge |
|---|---|---|---|---|
| Basketball | 8 PSI | Size-7 NBA basketball | 50 s | 95 balls |
| Soccer | 10 PSI | FIFA size-5 soccer ball | 1 min 8 s | 68 balls |
| Football | 13 PSI | NFL size-9 football | 1 min 0 s | 88 balls |
| Custom | User-defined (2–17 PSI) | Any ball (e.g., volleyball at 4.5 PSI) | Varies | Varies |
Dual-Port Design — INF & DEF
The P300 features dedicated INF (inflate) and DEF (deflate) ports, both using the 8V1 standard needle interface. Inserting the needle into the wrong port causes the pump to enter inflate mode when deflation was intended, and triggers an error alert — the ball is not damaged. Text labelling on the body indicates which port is which.
| Port | Function | Interface | Mis-insert consequence |
|---|---|---|---|
| INF | Inflate (air in → ball) | 8V1 standard | Normal inflation if DEF needle inserted |
| DEF | Deflate (air out ← ball) | 8V1 standard | Error alert; no ball damage |
P200 vs P300 vs P300 Plus
The P300 has a larger 2,600 mAh battery than the P200 (2,000 mAh), enabling 95 basketball inflations per charge vs 68. The P300 Plus (3,200 mAh) extends this further. Flow rate, accuracy, and weight are identical across all three models.
| Spec | P200 | P300 | P300 Plus |
|---|---|---|---|
| Battery | 2,000 mAh | 2,600 mAh / 9.62 Wh | 3,200 mAh |
| Flow Rate | 6.5 L/min | 6.5 L/min | 6.5 L/min |
| Accuracy | ±0.5 PSI | ±0.5 PSI | ±0.5 PSI |
| Basketball inflations/charge | 68 | 95 | Higher |
| Weight | 245 g | 244 g | 245 g |
| Preset modes | — | 4 (Basketball/Soccer/Football/Custom) | 4 |
Certifications & Compliance
The P300 carries CE (Waltek), FCC (Waltek), UN 38.3 (Lixun), and RoHS (Waltek) certifications.
| Certification | Report No. | Issuing Body | Date | Standard |
|---|---|---|---|---|
| CE — CE Marking | WTH25H09255939E | Waltek Services (Shenzhen) | 2025-09-29 | EMC + LVD Directives |
| FCC — FCC.gov | WTH25H09255940E | Waltek Services (Shenzhen) | 2025-09-29 | FCC Equipment Authorization |
| UN 38.3 — UNECE | LCSA02255227SA | Lixun Testing (Shenzhen) | 2025-03-01 | UN Manual of Tests & Criteria |
| RoHS — EU RoHS Directive | WTH25X09255941C | Waltek Services (Shenzhen) | 2025-10-20 | RoHS 2.0 / 3.0 |
Frequently Asked Questions
How long does the P300 take to inflate a basketball to 8 PSI?
50 seconds from 0 PSI to 8 PSI using the Basketball preset mode (tested at 25 °C, 100% battery). The pump auto-stops within ±0.5 PSI of the 8 PSI target. Per charge, the P300 can inflate 95 basketballs (0→8 PSI).
Can the P300 inflate a volleyball? Which mode?
Yes. Use Custom mode and set the target to 4.5 PSI (standard volleyball pressure range: 4.3–4.6 PSI). The pump will auto-stop within ±0.5 PSI of 4.5 PSI.
What is the difference between the INF port and the DEF port?
The INF port is for inflation (air flows into the ball). The DEF port is for deflation (air flows out of the ball). Both use the standard 8V1 needle. If you insert the needle into the wrong port, the pump will either inflate when you wanted to deflate, or trigger an error alert — no ball damage occurs.
How many soccer balls can the P300 inflate per charge?
68 soccer balls (size 5, 0→9 PSI) per full charge (2,600 mAh, 25 °C). Each inflation takes 1 minute 8 seconds. For American footballs (0→12 PSI), the count is 88 per charge.
P300 vs P200 — what is the actual difference?
The P300 has a 2,600 mAh battery (vs P200’s 2,000 mAh), giving 95 basketball inflations per charge vs 68. The P300 also includes 4 preset modes (Basketball, Soccer, Football, Custom) and a labeled dual INF/DEF port design. Flow rate (6.5 L/min), accuracy (±0.5 PSI), and weight are essentially identical.
Can the P300 inflate car tires?
No. Car tires require 29–51 PSI (200–350 kPa). The P300 tops out at 17 PSI and triggers an E22 over-pressure error above that. It is a sports ball pump only.
