ZKSCool CB03 Compact Medication Cooler — 250 ml, 0–18 °C
A smart self‑powered insulin/medication cooler with precise LCD temperature control from 32°F to 64.4°F. Holds up to 8 vials or 3 pens, cools in just 14 minutes*, and runs 4‑6 hours on battery — travel anywhere.
*Tested under laboratory conditions
CE Certified | FCC Certified | RoHS Certified | TSA Compliant for travel. Cold-chain engineering since 2015.
We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
1-year standard warranty included with every purchase. A 2-year warranty extension is also available — request it through our warranty form on the FAQ page for added peace of mind.
| Model | ZKS‑Cooler‑CB03 |
| Net weight (unit only, without battery) | 1.2 kg (2.65 lb) |
| Total weight (with built-in battery) | 2.1 kg (4.62 lb) |
| Capacity | 0.25 L (250 ml) |
| Temperature range | 0‑18 °C (32‑64.4 °F) |
| Battery capacity | 10600 mAh, swappable |
| Adapter input | 5V |
| Internal Dimensions | 24.89 x 175.01 x 57.91 mm |
| Product Dimensions | 100.08 x 210.06 x 104.90 mm. |
5V semiconductor cooling maintains set temperature even inside hot car cabins.
High & low temperature alarm. Set 0℃ temperature floor, get alert before medication gets damaged.
≤28dB(A) low‑noise operation, quieter than hotel mini‑fridge, perfect for bedside.
Wall power, car USB power supported, swappable 10600mAh battery. Extra battery sold separately for long‑haul trips.
The five numbers that matter.
*This product is designed to provide portable temperature-controlled storage under the test conditions stated on this page. Actual performance may vary with ambient temperature, load, use and power conditions. Always follow your medication label, manufacturer instructions and advice from a healthcare professional.
Three steps. Then forget about it.
Wall adapter, car USB, or run on the included swappable battery. Reaches target temperature within 18–22 minutes.
One touch of the auto button. Lock the controls with a 3-second long-press so a bag jostle doesn't change your setting.
A secure and reliable cooler anywhere you are. Make sure there is enough room for ventilation to ensure proper cooling.
*Performance varies with ambient temperature, load and power conditions. Always follow your medication label and the advice of a healthcare professional.
What it's built to hold.
Internal usable space accommodates standard injectors. Confirm fit against your specific medication on the full compatibility list.
Lantus · Tresiba · Toujeo · Levemir · NovoLog · Humalog · Apidra · Fiasp
Designed for on-the-go carry, holds several insulin pens.
Ozempic · Zepbound · Trulicity · Saxenda · Victoza
Fits 1-2 weekly-use injector pens for travel.
If we missed yours, send us a note.
Internal space fits standard‑size injection pens and medication vials. It works well with Lantus, Tresiba, NovoLog, Humalog, Ozempic, Wegovy, Mounjaro and other common injectable medications. Please check internal dimension data to confirm fit for your items.
4 - 6 hours on a full charge at typical room temperature. Extreme heat or cold will reduce runtime. Choose long haul for double batteries if you need an extended period of cooling. You can also run it plugged in.
Yes — TSA and most international authorities allow medical cooling devices in carry-on. The lithium battery is under the 100 Wh limit. Bring your prescription or doctor's note to be safe.
No — the thermostat holds 0–18 °C and will not drop below freezing. The app lets you set custom thresholds and will alert you if temperature drifts.
No — it works for any temperature‑sensitive medication: GLP‑1s, biologics, growth hormone, fertility meds, etc. Check your drug’s storage range and adjust the device setting accordingly.
1 year from purchase, covering defects in materials and workmanship. Accidental damage and normal wear are not covered. Extended plans available at checkout.
The unit is equipped with built‑in temperature sensor and front‑mounted LCD display. Real‑time temperature readings are shown directly on the screen. High and low temperature alarms are built‑in on the device. No app or Bluetooth connection required.
Yes, a USB‑C cable is included. The device can run and cool normally via USB‑C power supply.
Yes — the lid and the fan cover are both detachable and washable. No biofilm traps, no condensation pooling.
15‑25 minutes to reach target temperature from room temperature, depending on internal load. We recommend power it on 15 minutes before placing your medication inside.
Aviation‑grade aluminum and polyurethane insulation retains residual cold for 2‑4 hours. The built‑in device alarm will activate in advance, giving you time to connect power supply.
No — it's a precision instrument with a fan and electronics. Don't submerge it. The detachable lid is washable separately.
Yes. Many customers leave it on the bedside or kitchen counter for daily insulin storage and only run on battery when they travel.
Contact us through support@zkscool.com
