Charging the battery for 24 hours - a light is still red. Ella at SwiftPaws November 12, 2020 15:07 Updated It sounds like you might have a bad cell. Please contact Support@SwitfPaws.com and describe your troubleshooting efforts and the results so we can best determine your needs. Thank you! Related articles The charger popped, there's a bad odor, and is not charging. ✅ Troubleshoot Your Battery and Charger Here Can I leave the course set up? What are the Ideal Conditions for the Perfect Course? The Battery Pack Should Not be "Unwrapped"!!!