This electronic starter charger is suitable for 12V & 24V electrical systems The Sealey ECS400 Electronic Starter/Charger is suitable for EFB & AGM/GEL (stop/start), Lead Acid, Lead Calcium & Silver Calcium batteries. BSU mode provides support for the battery during prolonged electronic diagnostic checks. Features: Suitable for 12V & 24V electrical systems Fully electronic, microprocessor controlled Suitable for EFB & AGM/GEL (stop/start), Lead Acid, Lead Calcium & Silver Calcium batteries Up to 10 analysis and charge phases, including trickle/maintenance Stabilised charging current allows improved charging efficiency and reduced charging times using ECS (Electronic Control Systems) technology Surge and spike protection during charging and starting BSU mode provides support for the battery during prolonged electronic diagnostic checks Specification:  Nett Weight: 24.5kg Output: 12/24V Output Charge Peak (EN): 75A(50A) Output Start Peak (EN)*: 400A (300A) Battery Range: 4-550Ah Input Charge: 1.5kW - 6.5A Input Start: 10kW - 43A Charging Rates: 3 x Preset + 1 x Variable to Maximum Current Supply: 240V - 32A BSU Supply: 30A - 13.5V Polarity Protection: Fuse (2 x 100A) Fuse: 120/802131 (Pack of 10), 120/122452 (single) Note: *Performance dependent on connection to an adequate, good clean electric supply