To start with, Lithium Ion batteries are fairly low maintenance while being long lasting. When it comes to battery maintenance, firstly - charging your battery regularly has proven to extend the battery’s lifespan, or get the most out of it. Secondly, avoid storing the battery in extreme environments - either too hot or too cold, for an extended period of time. Thirdly, avoid keeping the battery plugged into the socket for long after it is fully charged. And lastly, ensure that your battery is fully charged before you unplug it - removing it before it is at 100% could reduce its lifespan.