I executed the recharging of Kidde ProLine Pro 5 MP fire extinguishers, focusing on refilling with monoammonium phosphate dry chemical. The procedure involved safely depressurizing units, thoroughly cleaning to remove any residue, refilling to specified weights, and re-pressurizing to operational standards. Post-service, I conducted leak and pressure tests to ensure they were ready for immediate use, marking each with a service date sticker.