Thought I saw it posted somewhere, can't locate - that you can charge a 801 on a 510 charger, I was able to make a connection, using a rubber band to hold the batt in place, but was concerned about the difference if any in charge/battery type. Is this something that I can do and not have a problem with? These are all auto's and I've got many 510 chargers, only 1 801. Thanks, Vicki