Personally, the impact should not be very large, if your widgets are not full of phones. Widgets are generally brought by the phone, the memory is not very large, the background usage is not large, and the power consumption is generally not very large. However, I think that the group should be used reasonably, and can not rely on it for everything. Perhaps you can use more software such as the note that comes with the phone
power consumption
Some third-party components, 8 hours a night off 8-9 cells without cells, 8 hours a night off 1 grid.
Before waking up in the morning, I felt a lot less electricity, deliberately turned off the network and Bluetooth, woke up or 8-9 grid less electricity, and then deleted all the components, turned off the network and Bluetooth at night, and woke up in the morning only lost 1 grid. So the universal widget consumes power.