The 3C discharge rate 18650 is delivering excellent power for electric 2-wheelers.
In China, 2600mAh@18650 with 3C or 5C discharge is the most popular cell for 2W. 18650 is still the safest cell till now even some prismatic are taken.
For the battery chemistry, even LFP is used in many fields but it is mainly used in grid/stationary energy storage, for EV, LFP cannot support enough ride range. In contrast, NCM can support a long-range well.
A 18650 with NCM cathode chemistry should be the best cell for 2W and 3W. The NCM cathode active materials are with a high energy density which is delivering good energy to a cell. This ensures a long-range for a riding purpose.
Forever EV focusing on delivering quality high energy density lithium-ion cells for EV batteries, welcome to contact for more information and FOC sample.