Annual recharge time for my drawer of devices

Today I woke up and opened a drawer full of old devices from smartwatches to fitness trackers. Decided it was a good day to plug them in and recharge those tired batteries. Some hold a charge and others not much but I keep an eye on these old things. I don't need batteries exploding until the day I need to recycle them properly. I haven't found a local place that recycles these small devices…