The CTEK D250S is a Premium Battery Isolator, a Smart Power Relay, Solar Panel Voltage Controller with MPPT solar power management functionality and a temperature compensated 20 Ampere smart battery charger all combined into one multi-functional product. The DUAL on-board charger, charges while you drive; it gathers energy from multiple DC power sources (the alternator(s), solar panels and wind power generators) and optimizes power to properly charge your service battery bank with microprocessor controlled smart charging algorithms and provides temperature controlled charging to meet the charge requirements of your service battery bank in any weather. It increases simplicity and reliability by eliminating the clutter of many individual components including battery switches, secondary battery isolators, relays, load managers, low voltage alarms and cutoff’s, separate solar panel and wind generator voltage controllers, and more.

Type: Automatic
Voltage Rating: 11.5 To 23 Volt Input/ 14.4 Volt Maximum Output
Ampere Rating: 25 Amp Input/ 20 Amp Output
Solar Powered: Yes
Length (IN): 192 Millimeter
Width (IN): 110 Millimeter
Height (IN): 65 Millimeter

Features
High Efficiency Power Management
Suitable For All 12 Volt Lead Acid Batteries
Multi-Step Charging From Alternators And Other DC Sources Such As Solar Panels
Automatic Starter Or Service Battery Separation
Solar Panel Voltage Regulator With Maximum PowerPoint Tracking (MPPT), Synchronizes With Other Power Sources Such As Alternator Or Wind Generator
Maintenance Charge Of Starter Battery Via Solar Panel
High Vibration Resistant Design
Limited 2 Year Warranty