Clearly, this question is only going to be of importance to those of you who invest in a battery-operated model. If you go corded, you can simply skip right over this question, to be perfectly honest. But, if you do have to deal with batteries, you need to understand how to properly store them. For this question, we are going to look at what you do with lithium-ion batteries (as they are very popular and common).
Firstly, there is a certain battery level that you need to store them at. While you may want to store them when fully charged, it is not good for them to fully discharge. So, manufacturers will typically recommend them being stored at around 40 percent capacity. Also, avoid storing them in wet or hot conditions. Ideally, keep it away from moisture and store it in around 60-degree conditions.