Ctek Smartpass 120s

Smartpass 120S is a 120 A energy management system that distributes, controls, and maximizes the energy supplied by the alternator for the service batteries and devices. Smartpass 120S is suitable for all 12 V batteries between 28 Ah and 800 Ah. The battery guard function of the Smartpass 120S prioritizes essential devices such as radios, emergency lighting, and navigation systems by supplying them with power first, while non-critical consumers are switched off when the service battery voltage is low. The device's battery guard protects your service battery from deep discharge, and the integrated over-temperature protection reduces the charging current before the battery temperature rises too high. Smartpass 120S is compatible with the D250SA and D250SE on-board chargers.

Battery types: Wet, Ca/Ca, AGM, EFB (Start/Stop), and Gel batteries; Lithium batteries: LiFePO4. Battery capacity for lead batteries: 28-800 Ah. Input voltage: 11.5-23 V, max. 120 A (350 A for a short duration of 10 seconds). Output voltage: max. 120 A (350 A for a short duration of 10 seconds). Start voltage minimum voltage for detecting a connected battery: 0.8 V. Back discharge current: less than 7 Ah/month. Current ripple: less than 4%. Voltage ripple: less than 4%. Temperature range: -20 °C to +50 °C (-4 °F to +122 °F). Self-learning mode: Automatically detects battery size and sets the option with the most efficient charging process. Protection class: IP65 (for indoor use). Weight: Gross: 0.9 kg / Net: 0.7 kg. Dimensions in mm (LxWxH): 192 x 110 x 65 mm.