Mabu will give you a low battery warning when her battery is at 75% or lower. If you see this warning, check Mabu’s power cord connection. Make sure the power cord’s plug is fully inserted into a power outlet, and that the other end of the cord is securely inserted into Mabu. You can also avoid a low battery warning by always keeping her plugged in, or powering her off correctly when she is disconnected from her power cord.