Processes produce a lithium vanadium fluorophosphate or a carbon-containing lithium vanadium fluorophosphate. Such processes include forming a solution-suspension of precursors having V5+ that is to be reduced to V3+. The solution-suspension is heated in an inert environment to drive synthesis of LiVPO4F such that carbon-residue-forming material is also oxidized to precipitate in and on the LiVPO4F forming carbon-containing LiVPO4F or CLVPF. Liquids are separated from solids and a resulting dry powder is heated to a second higher temperature to drive crystallization of a product. The product includes carbon for conductivity, is created with low cost precursors, and retains a small particle size without need for milling or other processing to reduce the product to a particle size suitable for use in batteries. Furthermore, the process does not rely on addition of carbon black, graphite or other form of carbon to provide the conductivity required for use in batteries.