Pricing & Availability
Olight sent me these lights in exchange for an honest review. Here is the official product page, Baton 4 Pro Amazon US page, and the Baton Ultra Amazon US page where you can see current pricing. That’s a tracked link so they know I sent you, but I’ve chosen not to earn any affiliate sales commissions. At the time of writing, Baton 4 Pro is $70 USD and Baton Ultra is $USD, but both are on sale for 10% off through April 24th, 2026.
What comes in the box?
Baton 4 Pro comes in a standard white Olight box. Baton Ultra comes in the fancier black Ultra box. The contents are identical. Inside each box is:
- The light itself
- Battery (inside the light)
- User manual
- MCC magnetic USB charging cable
- Magnetic mounting bracket
Design & Construction
Baton 4 Pro and Baton Ultra are similar to the outgoing Warrior Mini 3, with a few incremental updates to the clip, tailswitch, battery indicator, and USB-C charging. The only difference between Baton 4 Pro and Baton Ultra are some minor aesthetic changes, the LED, and beam. The Ultra is also slightly longer, though I don’t know why.
Build quality is great on both lights. They feels dense, solid, and well-made in a way you don’t get from cheaper lights. The Ultra is made of OAL, which is supposed to be tougher than standard 6061 aluminum. They both feel equally high quality to me and are both IPX8 water resistant.
Size & Measurements
Surefire G2X Pro | Zebra SC65c HI | Baton Ultra | Baton Pro 4 | Mini Maglite
| Measurement | Measured (mm) |
|---|---|
| Bezel Diameter | 23.1 |
| Maximum Width (from clip to side switch, 4 Pro) | 31.4 |
| Maximum Width (from clip to side switch, Ultra) | 32.3 |
| Length (4 Pro) | 111.3 |
| Length (Ultra) | 113.5 |
| LED Footprint | 5050 |
| Body Tube Diameter | 22.5 |
| Pocket Clip Slot Width | 10.1 |
| Pocket Clip Slot Diameter | 21.0 |
| Tailcap Diameter (4 Pro) | 23.0 |
| Tailcap Diameter (Ultra) | 23.5 |
| Included Battery Length | 69.0 |
| Weight with included battery (4 Pro) | 114g |
| Weight with included battery (Ultra) | 116g |
Switch & User Interface
The switches & UI on theses lights are pretty great overall. They both have a side switch with near industry-standard UI, plus an independent tail switch for quick access to High and Turbo modes.
Side switch: Basic E-switch UI Checklist: 9/12
- 1C on/off✅
- 1H to change brightness✅
- Stepped levels✅
- Main rotation is Low-Med-High✅
- Moonlight shortcut: 1H from off✅
- Low shortcut: 1H from Moonlight✅
- Turbo shortcut: 2C from anywhere✅
- Strobe shortcut: 3C from anywhere✅
- Mode memory for Low, Medium, and High❌
- High mode doesn’t stay memorized. If you turn the light off in High mode, it will memorize High mode but only for a minute or two after you turn the light off. Then, mode memory will revert to Medium mode. That’s inconsistent, confusing, and inconvenient.
- No mode memory for Moonlight, Turbo, and Strobe❌
- Moonlight is memorized, and Turbo is memorized as High mode. They shouldn’t be memorized because they each have their own dedicated shortcut for quick access. Ironically, the previous issue actually helps fix this Turbo memorizing issue, because mode memory reverts to Medium mode after 1 minute anyway.
- 4C or separate switch to lock/unlock❌
- Lockout is a long hold. That’s too easy to do by accident.
- Does something when you click the switch in Lockout mode✅
- There’s a dedicated lock symbol near the switch that glows when the switch is pressed in lockout mode.
Side switch notes:
- Timers: On the side switch, a click-release-click-hold will activate a 3-minute timer. A click-release-click-release-click-hold will activate a 9-minute timer. After the timer expires, the light will turn off. I like to use this feature when I’m going to bed and want the light to turn off automatically.
- Soft on/off: When using the side switch, there’s a soft fade-on and fade-off. It makes it a bit less jarring at high brightness levels, but I also find it makes the light feel a little slow and less responsive. I don’t care for it but it’s not a big deal.
Tail Switch: This switch works differently than previous Olight models that had a two-stage tailswitch. This one is a single-stage, but you still get similar functionality (two modes, constant or momentary). It’s totally independent from the side switch.
- Press-and-release: Turn on High mode. Press again to turn off.
- Press-and-hold: Turn on momentary High mode as long as you hold it. Release the switch to turn off.
- Double-press-and-release: Turn on Turbo mode. Press again to turn off.
- Press-and-hold: Turn on momentary High mode as long as you hold it. Release the switch to turn off.
- No strobe: Strobe is only accessible via the side switch, not the tail switch. This is different than previous Olight models with a tail switch.
- Use with the side switch: If the light is already turned on via the side switch, you can still use the tailswitch for quick access to High or Turbo. If you turn the light on with the tail switch, you can hold the side switch to cycle into the normal mode rotation.
One criticism: The tailswitch should be Medium and Turbo, not High and Turbo. High and Turbo are too close in brightness. Medium and Turbo would be more versatile and save battery.
Emitter & Beam
Baton 4 Pro has an unspecified, domed, cool white LED. Baton Ultra has an Olight EIP 1 LED that provides a narrower, cleaner beam.
Baton 4 Pro has a floodier beam and Baton Ultra is throwier, though neither is a dedicated flooder or thrower. Baton Ultra has a crisper hotspot and I strongly prefer it over the floodier Baton 4 Pro beam.
In the beamshots below, camera settings are fixed and the wall is 2.8M away.
In the beamshots below, camera settings are as similar as possible, the basketball goal to the right of the hotspot is 39M away, and the power pole in the center is 185M away.
Mode Chart
Disclaimer: All of my measurements are taken at turn-on. Lumen measurements were taken on a Texas Ace 3.5″ Lumen Tube. A candela measurement was taken at 10 meters with an Opple Light Master III on the highest brightness, and other candela figures were calculated relative to that. CRI, CCT, & DUV data were taken for each mode from a few feet away at the center of the hotspot with the Opple Light Master and Waveform DUV Calculator. Runtime tests were performed with the Ceilingbounce app on my smartphone. These tests were performed with a fully charged included battery unless otherwise specified. I cannot measure moonlight directly, so moonlight readings are calculated based on the brightness relative to the next-lowest mode. None of this is professional equipment, so take these measurements with a grain of salt.
The official specs are above, followed by my own measurements below.
| Level | Lumens | Candela | Throw (Meters) | CRI (Ra) | Color Temp. (K) | DUV (Tint) |
| Turbo | 1600 | 13000 | 230 | 64 | 5660 | 0.0087 |
| High | 550 | 4500 | 130 | 63 | 5580 | 0.0102 |
| Medium | 110 | 890 | 60 | 62 | 5430 | 0.0121 |
| Low | 12 | 98 | 20 | 62 | 5310 | 0.0144 |
| Moonlight | 0.04 | 00 | 01 | 62 | 5370 | 0.0133 |
| Level | Lumens | Candela | Throw (Meters) | CRI (Ra) | Color Temp. (K) | DUV (Tint) |
| Turbo | 1800 | 27000 | 330 | 67 | 6290 | 0.0042 |
| High | 580 | 8700 | 190 | 67 | 5840 | 0.0045 |
| Medium | 120 | 1800 | 85 | 64 | 5750 | 0.0082 |
| Low | 12 | 180 | 27 | 63 | 5621 | 0.0100 |
| Moonlight | 0.03 | 00 | 01 | 65 | 5530 | 0.0080 |
Runtime
Performance is good and similar for both lights. Turbo time is a bit more than 1 minute and sustained output is 600 lumens. Not only is 600 lumens respectable, the light does not get too hot to hold while running at that brightness. Total runtime is excellent.
Thermal Management: Turbo lasts a bit longer before stepping down with active fan cooling, but that’s the only effect. Sustained output appears to be a fixed value regardless of ambient temperature.
LVP (Low Voltage Protection): When the battery is virtually empty, the light will shut off. The last battery indicator glows red and it may lower the main LED brightness to warn you ahead of time. Once it shuts off, it can’t be reactivated unless you plug it in or remove and reinstall the battery for temporary emergency use.
Driver
The driver isn’t specified. My guess is both lights use a Buck driver.
Voltage immunity is fair. It maintains most of the Turbo brightness down to ~25-50% charge, and all the other modes are flat down to 25% charge or less. That’s better than some other Olight models I’ve tested that block Turbo mode below ~2/3 charge.
PWM: No PWM is visible to my eyes, nor audible to my ears. My Opple and phone camera could detect some faint flickering on some modes.
Parasitic Drain: I can’t measure parasitic drain because of the proprietary battery contacts.
Batteries & Charging
The battery included is a 3500mAh, protected, proprietary 18650 cell. Standard 18650s do not work, but Olight has been making this cell for years so future availability shouldn’t be an issue.
Charging is facilitated by MCC magnetic contacts on the tail or a hidden USB-C port on the tail. That’s a first for the Baton series and it’s a huge improvement! Just twist the tail as though you’re removing a tailcap and it will reveal the USB-C port. Charging takes a little under three hours via that USB-C port. It can be used while charging (except Turbo) and there’s no powerbank function, which is fine on a light this small.
The battery indicator is four discrete LEDs to the right of the switch. It’s intuitive, glanceable, and my favorite kind of indicator. There’s also a brightness indicator; four discrete LEDs on the left side of the switch. Its unnecessary, but it looks nice and doesn’t get in the way. There’s also a helpful lockout indicator at 12 o’clock that only appears in lockout mode.
Carry & Ergonomics
Ergonomics are good. Each light is comfortable in forward, reverse, and cigar grips. They naturally end up in a reverse grip when drawing the lights from my pocket because they carry bezel-down. That works surprisingly well and is a unique feature. Usually tailswitch lights or bezel-up lights require me to flip them around in my hand before I can use them.
Clip score: 5/7
- Attachment doesn’t pop off or rotate accidentally✅
- The clip goes into an indexed slot on the head so it literally can’t rotate and will always be directly opposite the button. That’s pretty cool.
- Can be removed and bent back into shape if needed✅
- Carry height is at a reasonable depth✅
- It’s designed for bezel-up deep-carry and that works surprisingly well. The light naturally ends up in a reverse grip when I draw it from my pocket for use.
- Bezel-down is not worth considering because it leaves about 1/3 of the light sticking out of the pocket. It would be better to have a bezel-up-only clip.
- Landing location is smooth, not on the charging port, and away from the bezel❌
- The clip lands directly on the fairly rough texturing. I imagine it will wear a hole in your pocket over time.
- Mouth/ramp and loop(s) are wide enough for pants material✅
- Finish is durable✅
- No bidirectional clips without reason❌
- There’s no reason for this clip to be bidirectional because it leaves so much of the light sticking out in the bezel-down orientation. The clip is much more likely to snag on a seatbelt for no good reason.
Magnet: There’s a magnet in the tailcap that’s plenty strong to hold the light up on a vertical surface. It also facilitates magnetic charging with the included MCC cable.
Competition
Here are some lights in the same class and how they compare.
Wurkkos FC12: Budget Alternative
- less than half the price
- similar brightness and throw to ArkPro Ultra
- reflector instead of TIR
- traditional dual-switch UI (tail on/off, side for mode changes)
- larger
- slightly lower price
- not as bright, doesn’t throw as far
- the smallest and lightest 18650 light available
- accepts unprotected flat top 18650 batteries instead of proprietary 18650 batteries
- no tailswitch
- no magnet
- no integrated charging
- worse UI and battery indicator
- nice LED (4000K high-CRI 719A)
- better clip
This section is not comprehensive. If I didn’t include a particular light here, it doesn’t mean it’s bad or doesn’t deserve to be here. I simply cannot list every possible competitor.
Conclusion
These are great do-everything EDC-size lights. The build quality, dual switches, UI, USB-C, charging, and performance are great. The proprietary battery comes with the territory but it is user-replaceable. The clip could use some improvement but it does provide unique bezel-up carry. I recommend getting the Ultra version because it has a much better beam than the 4 Pro version.
Thanks to Olight for sending me this light for review!
