Your battery heated blanket should be cared for much the same way you would care for any other blanket. It is important to keep it clean and free of dirt and dust. You should also avoid exposing it to direct sunlight or heat sources.Be sure to fully charge your battery heated blanket before its first use. Following this, you will only need to charge it every few months, as long as you use it on a regular basis. Be sure not to let the battery completely discharge, as this can shorten the life of the blanket.If you find that your battery heated blanket isn2019t heating up properly, there are a few things you can do to troubleshoot the issue:-Check that the power switch is in the 201con201d position-Check that the battery is properly inserted into the charging port-Make sure that the blankets isn2019t covered in too many layers or else it will not heat up properly