Hi !
My project is on the way and I should receive my ubitx maybe tomorrow.
Anyway, I've built the battery pack :

It's finally a 3S4P battery pack, from lithium 18650 cells. I didn't receive yet the BMS so the bare wires are "normal" for now.
All has been soldered with my DIY soldering unit for batteries. You can find more informations about that here :?
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73's
Adrien F4IJA