ABSTRACT Briquettes is solid fuels made from waste biomass by the carbonization method. Coconut coir and palm shell are biomass wastes that are not used optimally. Coconut coir and palm shell contain a lot of lignin and cellulose which can be used as an energy source in the form of charcoal briquettes. The aims of this research were to get the best ratio of charcoal from a mixture of coconut c…