LiPo batteries are lightweight and have high discharge capacity.
It is considered the best battery for model airplanes and helicopters. But if handled improperly, it can lead to accidents.
Although it is known that storing fully-charged (or almost) batteries is not a big issue, batteries may bulge and/or degrade its function when done frequently.
LiPo batteries with reduced function may not only work efficiently, it can also be dangerous. So, it's a good practice discharge to the storage voltage with a charger that has a discharging function. Yes, it may take time and could be troublesome, but it's always good to be safe.
The Tahmazo LiPo Saver discharges 1 to 4 cell LiPo battery packs that are fully-charged (or almost) and leaves only 3.85V in each cell. This product is very easy to use. Just by connecting the LiPo Saver to the SCV connector of the LiPo battery, it will discharge the cell down to 3.85V. The LED light goes off when it's done and it is then safe to keep.