HB250 12v Battery Powered Energiser. Brand New although maybe slight damage to box due to being stored on workshop for 12+ months. LED Status Indicator. Performance. Output volts – 8.3KV. Max output joules – 2.5. Stored joules – 2.771. 1 pulse per 3 seconds. 1 pulse per second daylight. 1 pulse per 3 seconds night. Day/ night Mode 2. 1 pulse per second night. 1 pulse per 3 second daylight. Battery life high – 1.5 weeks. Low – 3.5 weeks.