Taking care of your batteries? Excuse me? Yes, I’m not kidding. Batteries need to be taken care of. And even more so if they cost 120USD or more. I learnt my lesson when I tried to shoot with my Canon 5D2 after leaving it in a bag for months. I had to recharge the battery, but it didn’t work like it used to work. And when I bought my Leica M240 I knew my M9’s would get less action too. I bought sticky labels, cut them into tiny pieces and gave each battery a number. When I use one of the M9 cameras, I make sure all the batteries get as much use as I can. And after using, I charge them to full capacity, after which I let them ‘drain’ to 60% capacity. This is the best percentage to store your batteries for a longer time. It’s a very simple trick, but it will keep your batteries in condition.