Still the same problem with power tool batteries. Should be standardized like flashlight batteries.I think it's way better today, than it has been for nearly 40 years. There were a few common 110 volt appliance connectors used for everything from coffee pots to toasters back in the 1960's - 1980's, but ever since then our households have been filled with a hodge podge of random different connectors, voltages, and polarities for every device we own.
Now, with USB-C, it seems like nearly all manufacturers are jumping on-board this new standard, heck... even Apple! It seems basically every new device I've bought in the last year uses a USB-C adapter for charging, even my latest iPad. We now have one charging station that holds a small fleet of tablets and smart phones, all charging off the same voltage, and only using a few different connectors. Nice! Only took 40 years to get here.
Bruce