FTJ series, VRLA GEL battery uses German technology with narrow structure design. It has good heat dissipation performance and the floating standby performance, specially designed for gas gathering and exhaust system, effectively ensuring the security of the system. FTJ series is designed especially for 19’ and 23’ power supply cabinets for communication systems, mainly applicable for small outdoor base stations. It is more suitable for harsh environment of high-low temperature and poor backup power supply conditions.