1. Normal circumstance: When the battery is lower than 30% electricity, then it will give a warning like "Low Battery" or "Weak Battery", then please try to charge it 2 hours or so.

2. Abnormal circumstance: When the battery is more than 50% electricity, however, it still gives a warning like "Low Battery" or "Weak Battery", then please try to update it by firmware if there is:https://www.Univapo.com
If the problem still exists, please try to contact us here:https://www.Univapo.com