CTEK 20A Off Grid Charger Bundle

Rating: 5/5
Keep your batteries in top condition from any source. Don't get stuck because you don't have the right source. Total bundle to complete management of your electrical system charging. Includes in cab battery monitor control.
  • Manufacturer: CTEK
  • SKU: CTEK40-154
Your Price:
$ 401.74


CTEK charging system charges your battery bank from several sources, prioritizes connections, and looks after the battery so it will not become completely flat. It also optimizes charging while driving to give you more time off-grid. CTEK gives you full control with the battery monitor that shows you how many hours are left before the battery bank is empty. With this system, you can sit back and relax because you know how long your battery will last.


CTEK 20-Amp Off-Grid Charging system!

The CTEK 20A OFF-GRID charging system makes life easier and safer for anyone wanting to charge their batteries with energy generated from a range of sources, such as generators, solar panels, and wind power.

  • Charging Voltage : 14.4 Volts (Temperature Compensated)
  • Charging Current : 20 Amps
  • Charger Type : 5-step, fully automatic charging cycle
  • Battery Type : 12 volt lead-acid batteries (Wet, MF, GEL and AGM)
  • Battery Capacity : 40Ah to 300 Ah

  • Insulation : IP65 (Splash and Dust proof)
  • Warranty : 2 Year Manufacturer Warranty

CERTIFICATION : Meets ignition protection test requirements of the US Coast Guard stated in Title CFR 183.410

The CTEK 20A OFF-GRID charging system optimizes the charge generated during driving in order to provide you with even more battery capacity when you are off-grid. With the CTEK 20A OFF-GRID charging system, you can sit back and relax, safe in the knowledge that your batteries will continue to supply you with energy for a specific length of time.




Voltage regulator with Maximum PowerPoint Tracking (MPPT), synchronizes with other power sources such as alternator and/or wind generator!


The CTEK system is a premium battery isolator, a smart power relay, panel voltage controller with MPPT power management functionality and a temperature compensated 20 Amp smart battery charger, all combined into one multifunctional product!


This on-board charger, charges while you drive; it gathers energy from multiple DC power sources (the alternator(s), solar panels and/or wind power generators) and sensor 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 cutoffs, separate solar panel and wind generator voltage controls, etc.!


  • High Efficiency Power Management!
  • Simple to install and use!
  • Fully automatic, 5-step charging system!
  • Multistep charging from alternators and other DC sources such as solar panels!
  • Automatic starter/service battery separation!
  • Maintenance charge of starter battery via solar panel!
  • High vibration resistant design!



"CTEK battery chargers are the best chargers I have used. They are compact and attractive in design when compared to many other chargers in the marketplace. It is the only battery charger I use to charge my personal vehicles ('71 Dodge Challenger and 2013 Victory Vegas 8-Ball Motorcycle) they also have the pigtails for easy connections. They are easy to use and give you a visual lighted display of where they are in the charging process. I have also used the Battery Sense device in my new 2017 Dodge Ram 1500 truck to keep an eye on the health of the battery while traveling or any time that I want or feel the need to check it. I have also used them in my classroom with high school auto tech students to keep the shop vehicles fully charged. My students used the 7002 model and the 25000 model. They are so easy to use, that my students never had to worry about settings or hooking up the charger incorrectly. These are amazing chargers that work and give you visual indicators of what is going on. What more can you ask for out of a charger? Thank you CTEK for making a great product!"

"I received two replacement pig-tail covers for my battery charger today. Thank you for such prompt attention to my need for a replacement cover.
It is unusual in today’s world to find a company that responds to customer needs as quickly and considerately as you and your company did.
Any future needs I have will be directed toward your products."

"Sorry, I missed your email. I do appreciate the follow-up and that your company stands behind its products; especially products that work as advertised. I will definitely recommend your company and products to my friends. Thanks again."

"Best Charger Ever! My old charger would always boil over the battery. No problem with CTEK !!!"
Gary D

"Great charger by the way. I upgraded from a Battery Tender and your product is far superior."
Douglas L


Friday, 10 January 2020
Fair price and super easy to install. Keeps my battery charged even after 5 days off-roading, using the winch, etc... nice.
Derek King