CTEK D250SE Quick Start Guide

Date: 2020-10-01
Version: 1.0
Title: D250SE & SMARTPASS 120S
* Fuse recomended. Please verify directive for applicable installation regarding fuses
Alternator
Starter motor
Fuse*
Temperature sensor
Temperature sensor
RED = Smart Alternator cable
BLACK = Battery selector
Smart alternator cable (red)
• Not connected = Conventional alternator
• Connected to ignition = Smart alternator
Battery selector cable (black)
• Not connected = 14.4V charge voltage
• Connected to minus= 14.7V charge voltage
• Connected to +12V = LiFePO4
Fuse*

CTEK D250SE Specifications

General

Charging Current	20 A
Operating Temperature	-20°C to +50°C
Protection Class	IP65
Output Voltage	14.4V/14.7V
Battery Capacity	40–300 Ah
Battery Types	WET, MF, Ca, AGM, GEL
Dimensions	192 x 110 x 65 mm
Protection Features	Reverse polarity protection
Charging Stages	5-stage, Automatic