Marty,
Do a search for XCSOURCE 9.6 V batteries, search for the ones that? include? a USB charger.
I do not want to provide direct sourcing since some may get a bit huffy as no "marketing" on the group.hi hi
As far as connectors? you will need to do a bit of solder work, the battery comes with a connector to hobby car toys,I removed that and converted to deans micro plug 2Rs and then to a salvaged? connector from a dead FT-817 battery. makes swapping out so much easier
Easy work and when you do the first all the other batteries will only need 1/2 of the plugs,the whole package fits nicely inside the battery well with plenty of room. ?
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Best Regards.
Steve AB2ET/4