Complete 140A Off-Grid Power System

CTEK D250SE + Smartpass 120 + System Monitor 100A Ultimate 140A Power Solution — Combines 20A DC/DC charging with 120A alternator power for ultra-fast charging of your service batteries while driving D250SE Dual Input 20A Charger — Smart alternator compatible with MPPT solar input, supports lead-acid & lithium batteries (40–300Ah), temperature compensated charging Smartpass 120 Power Manager — Delivers up to 120A from your alternator, automatically separates starter & service batteries, prioritizes critical loads (fridge, lights, navigation), and includes start-assist function System Monitor 100A — Real-time battery monitoring with State of Charge (%), voltage, charge/discharge current, and estimated time remaining — perfect for keeping track of your power system Ideal for 4x4s, Overland, Motorhomes Vehicles & Off-Grid Setups Fully Compatible with CTEK D250SE, Smartpass 120, and most 12V dual battery systems Professional Grade — IP65 dust & splash proof, reliable Swedish engineering with 2-year warranty on all components