🛠️ Troubleshooting
| Issue | Possible Cause | Suggested Solution |
|---|---|---|
| Not heating | Low battery | Fully charge before use |
| Power button unresponsive (while charging) | Device is connected to power | Unplug and try again |
| Power button unresponsive (damaged) | Power button failure | Contact customer support |
| Shuts down halfway during use | Battery not fully charged / battery aging | Charge fully or contact support@ocoopa.com |
| Shorter heating duration | Low ambient temperature | Wrap with cloth to keep warm; or battery life may be reduced |
| Charging takes too long | Extreme temperature environment | Charge in an environment of 32°F–104°F (0–40°C) |
| Cannot charge (LED not on) | Poor contact / unstable power supply / damaged cable | Check connection, replace cable or power source; if issue persists, contact support |
| Phone not charging | Loose connection or wrong port | Reconnect or switch USB port; note: heating stops when charging a phone |
📦 Orders & Shipping
When will my order be shipped?
When will my order be shipped?
Orders ship within 24–48 hours, delivery in 3–10 business days.
How can I track my order?
How can I track my order?
Track via 17TRACK or check "My Account" → Order Details.
Tracking shows delivered, but I can’t find my package.
Tracking shows delivered, but I can’t find my package.
Check mailbox, porch, neighbors, or local post office. If still missing, contact us at support@ocoopa.com.
🔥 Using Your Hand Warmer
How do I turn it on/off?
How do I turn it on/off?
Press and hold the power button for 5 seconds.
How do I change heat levels?
How do I change heat levels?
Press once to cycle through heat levels (low–high).
Can I charge my phone with it?
Can I charge my phone with it?
Yes, if your model includes a power output function (with USB-A/USB-C output). Simply connect your phone via the charging port. Please note: heating will pause while charging to ensure safety and efficiency.
🔋 Charging & Battery
How long does charging take?
How long does charging take?
About 3–4 hours with USB-C fast charging.
Can I use it while charging?
Can I use it while charging?
No. For safety, heating pauses while charging.
Battery life decreasing, is it normal?
Battery life decreasing, is it normal?
Yes, lithium batteries naturally degrade. Recharge every 2–3 months if unused.
🛡️ Safety & Maintenance
Will it overheat?
Will it overheat?
No. Built-in smart temperature control prevents overheating.
How to clean it?
How to clean it?
Wipe with a soft dry cloth. Do not wash or use solvents.
Storage tips?
Storage tips?
Keep in a dry, cool place. Avoid moisture and fire.
📧 Returns & Warranty
Can I cancel or return my order?
Can I cancel or return my order?
Yes. Contact support@ocoopa.com. If shipped, return must be sent back to our warehouse in original condition.
What if I received the wrong item or missing item?
What if I received the wrong item or missing item?
Please send us photos for confirmation. We will resend missing/wrong items free of charge.
Does it come with warranty?
Does it come with warranty?
Yes. Register your product at Warranty Registration.