If your Ooze Tanker extract battery is flashing red, it could be indicating a few different things. Here are a few possible causes and solutions to consider:

1. Low battery: A red flashing light on the Ooze Tanker may indicate that the battery is running low on power. In this case, you'll need to charge the battery before you can use it again. Make sure to use the appropriate charger (either a USB-C port or an eGo 510 charger) and follow the manufacturer's instructions for charging.
2. Overheating protection: The Ooze Tanker is equipped with overheating protection to prevent the battery from getting too hot. If the battery is overheating, the red flashing light may be a warning signal to let you know to stop using the device and let it cool down.
3. Short circuit protection: The Ooze Tanker is also equipped with short circuit protection to prevent damage to the device. If the battery detects a short circuit, it may flash red as a warning signal. In this case, you'll need to check the connections and make sure that everything is properly seated and functioning as it should.
4. If the red flashing light persists after you've tried the above solutions, it may be a sign of a more serious issue with the battery. In this case, it's a good idea to contact the manufacturer or customer support for further assistance.

Overall, a red flashing light on the Ooze Tanker extract battery could be caused by a variety of factors, but with a little troubleshooting and care, you should be able to get your device working properly again.