Profile: C & D Technologies, Inc. specializes in supplying products in reserve power systems and electronic power supplies. Our products include batteries, power systems and discontinued products. 4LCY lead-calcium is used for telecommunications applications and is available from 290 to 660 ampere-hour capacities. Its four-cell design offers reduced length for optimum space utilization. Its flame-retardant covers enhance battery plant safety and its suspended positive plate permits free growth without pressure on jar & cover. The ARR-M is a SCR-controlled charger. It is a three-phase, high-power charger. Its electrical and mechanical design features make it ideal for a wide variety of utility, industrial, and other standby power supply applications.