A cordless car diffuser with a 4000 mAh cell and a 70 mL tank — four hours continuous, eight intermittent, and no cable across the dashboard.
The 4000 mAh cell is the specification that matters here. Cordless car diffusers usually carry 1200–2000 mAh, which gives a couple of hours and then a cable; the DT-2521 runs four hours continuously or eight on the intermittent cycle, which covers a week of commutes between charges.
At Ø68 × 149 mm it fits a cupholder or a door pocket. Output is 10–20 ml/h from a 70 mL tank at 2.4 MHz, and the mist runs continuous or 30 seconds on and 30 off. Noise is held at or below 35 dB, which is largely masked by road noise at speed but audible when parked.
Figures come from the current sheet for this model. Dimensions are nominal; finished weight and surface tone vary slightly by batch.
| Model | DT-2521 |
|---|---|
| Type | Ultrasonic, water-based · rechargeable |
| Dimensions | Ø68 × 149 mm |
| Tank capacity | 70 mL (max) |
| Mist output | 10–20 ml/h |
| Working mode | Continuous / intermittent (30 s on · 30 s off) |
| Runtime | Approx. 4 h continuous · 8 h intermittent |
| Battery | 4000 mAh built-in lithium |
| Charging | DC 5 V / 1 A · approx. 5 hours |
| Noise | ≤ 35 dB |
| Frequency | 2.4 MHz |
| Net weight | 250 g |
| Light | 3 warm LEDs · long-press off |
| Controls | One physical button |
| Body colours | Beige stripe / wood grain |
| Compliance | RoHS / EMC |
Certification files are issued per destination market — tell us the country of sale and the correct set is quoted with the unit. Batteries are shipped with the transport documentation required by the chosen freight method.
Four hours continuous covers a shift; eight hours intermittent covers a week of commuting on one charge.
Cordless means no wiring in a vehicle that changes hands. Warm light doubles as a cabin night light.
A 70 mL tank sits under most cabin-liquid limits for a single unit, and the body colour options suit gift packaging.
Every model in this range is built to order. These three are the levers buyers pull most often.
Two standard body finishes (beige stripe and wood grain) plus custom colour. Buyers in hot markets generally move away from dark finishes for dashboard placement.
Logo on the front face or the base, with carton artwork and market-specific warning text typeset to the destination regulation — vehicle accessories carry different labelling rules to home appliances.
USB cable, 12 V car adapter or both. Blister, gift box or plain carton, with the battery declaration prepared for the shipping method you actually use.
Yes, it works on a 5 V car adapter while charging, so a long drive is not limited by battery. A standard 5 V / 1 A output is enough; higher-current fast chargers are not required and do not speed up the unit.
The cell is a built-in lithium type with protection, but leaving any rechargeable unit on a dashboard in direct summer sun shortens its life and is not recommended. Buyers in hot markets should specify the beige body over the dark wood-grain finish for interior placement.
RoHS and EMC are documented for the unit. Battery transport documentation is issued separately for shipments that move cells by air, so tell us the shipping method when you request the quote.
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Stock units ship within three to five working days. Send us the market, the quantity and the finish you have in mind, and you get a quote with the correct certification set attached.
