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@Gordon
Wow, the JST connector is pretty solid - I think you're the first to have any troubles with that :( The through-hole ones (specifically like the ones on the Olimexino) were a total disaster as they had no support at the front, but a vertical one would be better.
You can connect to the small SMD transistor on the opposite side of the board, or there's actually an unpopulated part next to it and you can connect to the pin on that nearest the diode (see the image). The other side of the JST is just ground.
Having said that, if you don't plan on connecting a battery while you're using USB, or if your battery is >5V then you can just connect to the 0.1" holes for Bat and GND.
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