JFM Engineering has been providing battery testing solutions to the aviation industry for more than 30 years. It provides development and manufacturing of precision test equipment for aviation and industrial batteries. Products include battery charger-analyzers for mainship batteries and small battery packs, Trickle chargers, data acquisition system for battery test data and test equipment for the verification and calibration of charger-analyzers. Services include modification, repair, and calibration of charger-analyzers and battery testing consulting support. For more information call (305) 592-2272 or visit www.jfmeng.com.