The Lost Mary OS5000 is a rechargeable disposable that leans hard on sweet, high-nic salt flavors in a compact body. I reviewed it because devices in the “~5000 puff” class often look similar on paper, yet they feel very different once you put one in daily rotation. The experience usually comes down to flavor steadiness, draw behavior, and how often you end up reaching for a cable.
What is the Lost Mary OS5000?
Lost Mary OS5000 is a draw-activated, non-refillable disposable that’s typically listed with ~5000 puffs, a mesh coil, and USB-C recharging. Most US listings also show 5% (50 mg) nicotine salt, 13 mL e-liquid, and a 650 mAh battery.
The main risks are practical and predictable: high nicotine strength can feel intense, sweeteners can run heavy over long sessions, and the usual disposable issues show up (waste, plus higher counterfeit risk if you buy from informal sources).
Why choose the Lost Mary OS5000?
This one fits adults who want a loose MTL to restricted-lung draw and prefer loud, candy-fruit flavor over subtle blends. It also fits people who like a clear cooling option, since several core flavors come in “ice” profiles.
It is not a good match for anyone chasing an ultra-tight MTL pull, or for people who get worn down by syrupy sweetness after repeated short sessions. It also misses the mark for users who want a low-nic routine without hunting for a specific lower-strength variant, since the OS5000 is most commonly listed as 5% nic salt.
Commuters who need truly “set it and forget it” battery may end up charging it more than they expect, especially with longer pulls.
How We Tested It
We ran the Lost Mary OS5000 for 3 days, rotating it through normal daily use at roughly 100–300 puffs per day. We tracked flavor accuracy, puff-to-puff consistency, airflow/draw behavior, throat hit feel, condensation/leak risk, and battery/charging behavior. Chris handled the core scoring and reliability notes, Marcus pushed longer chains and higher-frequency use, and Jamal focused on pocket carry and quick-hit sessions during commuting.
Performance Scores of the Vape
Verified baseline specs used for context: ~5000 puffs, 13 mL e-liquid, 5% (50 mg) nic salt, 650 mAh rechargeable battery, USB-C, mesh coil, draw-activation.
Test duration was 3 days at roughly 100–300 puffs/day. Scores use a 5-point scale; flavor and throat hit are more subjective, while leak behavior, build feel, and day-to-day reliability are based on repeat checks.
| Metric | Score | Remarks |
| Flavor | 4.4 | Strong “front note” on first pulls; sweetness stays consistent early, then flattens a bit with heavy use. |
| Throat Hit | 4.0 | Noticeable hit at 5% nic; stays mostly smooth with short pulls, gets sharper on longer chains. |
| Vapor Production | 4.1 | Above-average output for a loose MTL/restricted pull; vapor stays steady unless the battery is low. |
| Airflow/Draw | 4.0 | Easy draw with moderate resistance; not a tight MTL device, and it favors relaxed pulls. |
| Battery Life | 3.8 | 650 mAh is workable, but heavy sessions pushed us into top-ups; it fits better with lighter pacing. |
| Leak Resistance | 4.2 | No true leaking during the run; light condensation showed up and needed routine wipe-down. |
| Build Quality | 4.1 | Body feels solid in-hand; mouthpiece fit stayed stable and didn’t loosen during pocket carry. |
| Ease of Use | 4.6 | Draw-activation is consistent; no settings to manage, and day-to-day operation stays simple. |
| Portability | 4.4 | Compact for daily carry, though the flask-style shape can feel wider in a tight pocket. |
| Overall Score | 4.2 | Average of the metrics above, rounded to one decimal; strongest in flavor and simplicity. |
Our Testing Experience
I treated the OS5000 like a normal daily carry instead of a desk-only device. Marcus stressed it with longer chains that tend to reveal heat drift and flavor collapse. Jamal kept it in a pocket, then checked the mouthpiece and body for condensation patterns after repeated short sessions.
Our Testing Results
The OS5000 behaved like a typical mesh-coil disposable that’s tuned for sweetness and easy draw. In normal pacing, the device kept a stable pull with consistent activation, and it did not show random misfires. The flavor stayed bold early in the day, then it started to lose detail after extended repeat pulls, which matched what Marcus saw when he ran longer chains back-to-back. Battery behavior lined up with a 650 mAh rechargeable disposable: it worked fine for routine use, and it felt less comfortable for heavy sessions unless I had a USB-C cable nearby.
Condensation was the main hygiene chore. I saw a light film build up around the mouthpiece area after frequent short bursts, especially when the device went straight back into a pocket. Jamal’s notes matched that pattern. It never turned into a real leak, but it did push the leak-resistance score down from “nearly perfect” to “good with basic upkeep.”
Draw Experience
I stayed with three common OS5000 flavors: Blue Razz Ice, Miami Mint, and Strawberry Ice.
Blue Razz Ice opened like a blue-raspberry candy with a clear cooling finish. The cooling built up if I took repeated pulls, and the aftertaste leaned sweet rather than tart. Miami Mint was cleaner and less sticky on the tongue, with a mint note that felt steadier across the day. It did not hide the nicotine feel, though, especially on longer pulls. Strawberry Ice came off like a strawberry syrup note up front, then a cold finish that lingered. With higher puff counts, the strawberry note lost some texture and started reading more like “sweet red candy” than fruit.
Pros & Cons
| Pros | Cons |
| Mesh-coil flavor hits hard on the first pulls and stays consistent with normal pacing. | Sweetness can feel heavy over long sessions, especially on dessert-style blends. |
| Draw-activation stayed reliable; no settings to manage in daily carry. | Not a tight MTL draw; users who want cigarette-level restriction may not like it. |
| Vapor output is strong for loose MTL/restricted pulls without needing airflow controls. | Long chain pulls can sharpen the throat feel at 5% nicotine. |
| No leaking during the run; only light condensation that responded to quick wipe-down. | Condensation still shows up with pocket carry and frequent short bursts. |
| Rechargeable via USB-C, which keeps it usable after heavy stretches. | 650 mAh is not “all-day” for heavy users; top-ups become part of the routine. |
| Compact, flask-style body is easy to grip and does not feel flimsy. | Wider body can print in tight pockets compared with slim cylinders. |
| Widely available flavor lineup, including multiple ice and mint options. | Price swings across listings; it’s easy to overpay if you don’t compare. |
Key Specs
| Item | Detail |
| Device type | Disposable, non-refillable, rechargeable |
| Activation method | Draw-activated |
| Rated puff count | Approximately 5000 puffs |
| E-liquid capacity | 13 mL |
| Nicotine strength | 5% (50 mg) nicotine salt |
| Battery capacity | 650 mAh |
| Charging port | USB-C |
| Atomizer style | Integrated disposable-style atomizer |
| Coil type | Mesh coil |
| Coil resistance | - |
| Estimated charge time | - |
| Airflow control | - |
| Leak resistance | Good in use; light condensation in pocket carry |
| Mouthpiece comfort | Comfortable for short pulls; wipe needed after frequent bursts |
| Battery life in practice | Works best with normal pacing; heavy use pushed us into top-ups |
| Vapor output | Moderate-to-high for loose MTL/restricted pulls |
| Maintenance | No refilling; basic mouthpiece cleaning helps keep it tidy |
Lost Mary OS5000 Vs. Alternatives
Pick the OS5000 if you want a sweet-forward mesh flavor, a simple draw-activated routine, and the option to recharge via USB-C instead of tossing it early.
For a close same-class alternative, Elf Bar BC5000 targets a similar “5000 puffs / 13 mL / 650 mAh / USB-C” profile and can be a cleaner fit if you prefer that flavor catalog.
If you want something shorter-running and often simpler in feel, Flum Float 3000 sits around 3000 puffs with 8 mL and 50 mg nic salt, and it tends to suit people who rotate devices more often.
Pro Tips for Lost Mary OS5000
- Keep pulls shorter and more consistent. The flavor stays clearer, and the throat hit stays smoother at 5% nicotine.
- Wipe the mouthpiece once or twice a day if you pocket-carry it. Condensation shows up more with frequent short sessions.
- Recharge before it feels fully drained. Low battery can make the draw feel slightly weaker and less consistent.
- Use a standard USB-C cable you trust, and avoid forcing the plug. The port is small, and cable strain adds wear over time.
- If an “ice” flavor starts tasting flat, reset your palate with water and a short break. Cooling can dull fruit detail during long sessions.
- Store it upright when possible, especially in a warm car or a tight bag. It reduces mouthpiece mess and keeps the draw cleaner.
- If sweetness fatigue hits, switch to a mint flavor for a few hours. It’s an easy way to keep the device usable across a full day.
- Avoid chain hits when the device is already warm. Heat plus sweetness is when flavors start to blur and get syrupy.
- Buy from reputable retailers and compare listings. Prices and editions vary, and that’s where bad buys happen.
FAQs
Q: Is the Lost Mary OS5000 rechargeable, and what cable does it use?
A: It’s commonly listed as rechargeable with a USB-C charging port. A basic USB-C cable is the normal match.
Q: How many puffs does the OS5000 actually last?
A: Listings usually rate it around 5000 puffs. Real mileage shifts with puff length and pacing, and longer pulls burn through liquid faster.
Q: Can you refill a Lost Mary OS5000?
A: It’s typically described as non-refillable. The device is meant to be used as-is, then replaced.
Q: Why does the flavor start to feel flatter after heavy use?
A: With sweet, high-strength nic salt disposables, repeated long pulls tend to warm the coil area and push a “one-note” sweetness. Short breaks and shorter pulls usually keep the flavor clearer.
About the Author: Chris Miller
