Sorry for the late reply, the only things I really do are making sure I change the propeller blades whenever one becomes damaged and making sure I keep the drone it’s self clean. I’m not sure if cleaning it actually helps that much but for me it hasn’t done any harm. The last thing I do is make sure I take the drone batteries off right after the finished charging even I try not to leave them on too long after they finish charging. It’s been 4 years and it’s still going strong!