There has been
evidence that the purple Efest 35 amp 2600mAh battery is a re-wrapped LG18650HE2 battery. LG (the manufacturer of that battery cell) says it is only a 20 amp continuous discharge rate. Efest has been known to overstate their mAh and amp ratings in the past.
1.0 ohm = 4.2 amp draw
0.9 ohm = 4.6 amp draw
0.8 ohm = 5.2 amp draw
0.7 ohms = 6 amp draw
0.6 ohms = 7 amp draw
0.5 ohms = 8.4 amp draw
0.4 ohms = 10.5 amp draw
0.3 ohms = 14.0 amp draw
0.2 ohms = 21.0 amp draw
0.1 ohms = 42.0 amp draw
You could use the Efest/LG battery down to 0.3 ohms. However, know that if you routinely push a battery above 80% it will degrade the battery faster than what is considered "under normal use". Routine daily use at 0.3 ohms will age the battery so that it will no longer have the same specs as when it was new.
Both
batteries should do fine at 0.5 ohms
Thank again that really help