Storing a battery fully charged or completely depleted can reduce its lifespan. It is typically recommended to store batteries at a charge level of around 40-60%.
How do you store batteries?
Regardless of type, there are some general rules for storing batteries. Store batteries on their ends to prevent fire risk and maximize shelf life. Got a bunch of batteries hanging out in a drawer? This is a very bad way to store batteries because their ends can touch each other.
How long do batteries last?
Good options include a locking case, or a shelf or cabinet that is out of sight and out of reach. When stored properly, batteries will last a long time, but not forever. Over the course of many years, batteries will start to lose their charge, even if you store them perfectly.
If you plan to store a battery for several months or more, avoid keeping it at 100% charge. Fully discharged (0%): Storing a battery at a very low charge is equally harmful. A completely drained battery can lead to voltage instability, which could result in permanent damage and a reduction in capacity.
Are lithium-ion batteries good for long-term storage?
Lithium-ion batteries are great for electronics or devices with high energy requirements that get used daily. However, Li-ion batteries are not suited for long-term storage. They quickly lose their charges and can go beyond the recoverable level. If you do need to store lithium-ion rechargeable batteries, make sure to follow these guidelines.
Humidity: Keep the batteries in a dry environment. High humidity can cause moisture to enter the battery cells, leading to corrosion and electrical shorts. Ideally, store your lithium batteries in a sealed, dry container to protect them from environmental factors. How Long Can Lithium Batteries Be Stored Safely?
Step-by-step storage procedure During storage, monitor the specific gravity (flooded) or voltage. Batteries in storage should be given a boost charge when they show a charge of less than 75% or approximately 12.40 volts for a 12-volt battery.