The Whoop That Finally Got Enough Battery: BetaFPV Meteor Pro II O4 Wide Explained
Quick Answer
Choose the BETAFPV Meteor65 Pro II O4 Wide for tighter indoor lines and the Meteor75 Pro II O4 Wide for longer flights and calm outdoor use. BETAFPV lists 4:05 on a 480mAh pack for the 36.20g Meteor65, versus 5:00 to 6:00 on 580-680mAh packs for the 41.50g Meteor75.
Why BetaFPV Made Their Smallest Whoop Bigger
The original Meteor75 Pro O4 put DJI digital video on a 37.20g 1S whoop, but the smaller original Meteor65 Pro O4 was rated at only 2:40 on its 300mAh battery. The Pro II redesign is therefore more than a camera swap: BETAFPV enlarged the Meteor65 airframe specifically to carry a higher-capacity pack.
The Pro II line uses a counterintuitive fix for a tiny whoop: a larger battery platform. The Meteor65 Pro II grows from a 66mm to 70mm wheelbase, while the Meteor75 Pro II uses an 80mm frame and supports longer 580mAh and 680mAh packs. The two models also use different motors and propellers, so the decision is about airframe fit as well as battery capacity.
Meteor65 Pro II vs Meteor75 Pro II: Which Size?
Both share the same core upgrades: DJI O4 Wide Air Unit, Canopy II with four-ball vibration damping, Matrix 1S 3IN1 HD flight controller with onboard ELRS 2.4G, and BT2.0 battery connector. The difference is propeller size and indoor versus outdoor capability.
| Spec | Meteor65 Pro II O4 | Meteor75 Pro II O4 |
|---|---|---|
| Wheelbase | 70mm | 80mm |
| Weight (no battery) | 36.20g | 41.50g |
| Motors | 0802 Freestyle (2026) | 1102 Freestyle (2026) |
| Props | GF 1409 3-blade | GF 1811 3-blade |
| Flight time | ~4:05 (480mAh) | ~5:00 to 6:00 (580-680mAh) |
| Battery choice | LAVA II 1S 480mAh | LAVA II 1S 480, 580 or 680mAh |
| Best fit | Tight indoor rooms and smaller gates | Larger indoor spaces and calm outdoor flying |
| Camera | DJI O4 Wide (159-degree FOV) | DJI O4 Wide (159-degree FOV) |
| VTX | DJI O4 Air Unit | DJI O4 Air Unit |
The Meteor65 Case: Tighter Indoor Lines
The Meteor65 Pro II O4 is the smaller choice, but its model name can mislead: the Pro II has a 70mm wheelbase rather than 65mm. Its 0802 Freestyle motors and GF 1409 three-blade props keep the package compact, while the 16.1mm battery slot is designed around the LAVA II 1S 480mAh pack. We would choose it when doorway clearance and indoor agility matter more than maximum endurance.
If you already fly the analogue BetaFPV Air65, the Meteor65 Pro II O4 is the digital equivalent at roughly the same size, trading 19g of weight for full DJI O4 Wide video quality.
The Meteor75 Case: More Endurance
The Meteor75 Pro II O4 is our one-whoop choice for larger rooms and calm outdoor sessions. The 1102 Freestyle motors and GF 1811 props are paired with 580mAh or 680mAh packs for BETAFPV's claimed 5:00 or 6:00 flight time. Those are manufacturer figures, not a guarantee: hard freestyle, cold batteries and voltage sag shorten them.
For comparison, the Air75 II is a much lighter analogue 75mm option. The Meteor75 Pro II is the relevant choice when onboard 4K recording and DJI video matter more than minimum mass.
Canopy II and Vibration Damping
Both Pro II models ship with the redesigned Canopy II, which uses four shock-absorbing balls to isolate the O4 Air Unit from motor vibration. BETAFPV specifies camera tilt adjustment from 15 to 35 degrees, giving useful room to match indoor cruising or faster lines. Replacement Canopy II units are available separately.
The DJI O4 Wide Camera
The Pro II line uses the O4 Wide variant, not the standard O4 camera. It records up to 4K/60fps with a 159-degree field of view. DJI lists Goggles 3, Goggles N3, Goggles 2 and Goggles Integra as compatible; the similarly named DJI FPV Goggles V2 are not on the O4 compatibility list. Walksnail, HDZero and analogue goggles will not receive it. See our goggles compatibility guide before buying.
UK Rules: No Registration Needed
Both models remain below 100g with their recommended batteries. Under the current UK CAA registration rules, an aircraft below 100g does not require a Flyer ID or Operator ID, although the CAA recommends taking the Flyer ID test. Outdoors, the Drone Code still applies; when flying by goggles, use an observer who can maintain direct sight of the aircraft and surrounding airspace. Indoors, get the property owner's permission and consider people and privacy before recording.
What We Would Actually Buy
For pure indoor flying, the Meteor65 Pro II O4 is our pick. Its 70mm frame is designed around the 480mAh LAVA II pack; do not assume the longer 580mAh and 680mAh packs recommended for the Meteor75 are equally suitable.
For pilots who want a do-everything whoop, the Meteor75 Pro II O4 is worth the extra weight. Six minutes of flight time and enough motor punch for light outdoor conditions make it the more versatile option.
Either way, pair it with a RadioMaster Pocket Crush for ELRS control and a ViFly WhoopStor V3 charger. See our LiPo charging guide for safe 1S battery management.
FAQ
Q: Do I need DJI goggles to fly the Meteor Pro II O4?
A: Yes. DJI lists Goggles 3, Goggles N3, Goggles 2 and Goggles Integra for the O4 Air Unit series. DJI FPV Goggles V2, Walksnail, HDZero and analogue goggles are not compatible.
Q: Can I use the Meteor Pro II O4 outdoors?
A: The Meteor75 Pro II is the better choice for calm outdoor conditions. The Meteor65 Pro II is primarily an indoor aircraft. Neither is waterproof, and BETAFPV says not to fly in high winds, rain, snow, thunderstorms or heavy fog.
Q: Are spare frames and motors available?
A: Yes. We stock the Meteor65 Pro II frame, Meteor75 Pro II frame, and 1102 Freestyle motors separately. Browse our ready-to-fly collection for the full whoop range.
Q: How does the Pro II compare to the original Meteor Pro O4?
A: The Pro II upgrades to the wider 159-degree FOV O4 Wide camera, adds the Canopy II vibration damping system, uses redesigned 2026 Freestyle motors with 0.10mm stator cores, and accepts larger batteries for significantly longer flight times. See our original Meteor75 Pro O4 review for the full comparison.