I have a OneWheel electric skateboard with a 58V LiFePO4 battery 130Wh (I believe 14s1p configuration).
There is a method in practice where owners wire EGO LION battery packs (56v 2.5Ah=14s1p, 5Ah=14s2p, 7.5Ah=14s3p) in parallel to their OneWheel onboard battery. Due to their internal parallel configurations, I believe the EGO batteries can flow AMPS as follows: 2.5Ah=20A, 5Ah=40A, 7.5Ah=60A.
I have measured the AMP flow @ 5.5A spike then ramp down to 3A within about 30 seconds when connecting a full 5.0AH EGO to a 85% charged OneWheel (voltage differences of roughly 58V connecting to 54V).
I do not know the internal resistance of the onewheel battery other than my observation above.
My questions are, what is a practical safe voltage difference to connect a full EGO battery to a slightly discharged Onewheel for use in the real world?
Is there a way to graph initial expected amperage currents given onboard battery voltages of the onewheel? (58v=100% - 48v=0%)