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Your cart is empty.The C35 and C60 are field configurable for 12 V and 24 V operation. The C40 may be configured for 12 V, 24 V, or 48 V operation. C35, C40 and C60 charge controllers can be used as a charge, diversion, or load controller and come with a standard multi-color charge status LED face plate. Quick and simple installation/operation.
Bruce
Reviewed in Canada on July 11, 2023
Exactly like the last one I bought thirty years ago, and easy to install and operate. I am very happy with the new charge controller and it apparently has a load controller feature too, impressive.
Doug A.
Reviewed in the United States on April 28, 2023
I bought this to use with a LiFePO4 battery, knowing that its design predates those batteries but it is fully adjustable and thought it would be no problem to set it for LiFePO4 parameters. I liked that this product has been in production and use for many years and is a reliable, rugged design, especially after reading several reviews of MPPT controllers failing and destroying battery arrays. But, it turns out that its operation isn't compatible with LiFePO4, causing the battery to briefly go overvoltage (regardless of the C40's settings) which results in the battery's internal BMS shutting down the battery, placing full solar array voltage on the rest of the system, which of course isn't good.Also, I purchased this unit used and the description said that its condition was "slight dent in the box." Reality: It was shipped in a thin padded envelope (!), the cover was completely missing (which would be a code violation to operate it without the cover) and one of the wire terminal screws was jammed and can't be used, and no manual or other documentation was included. Fortunately manuals are readily available online. I bought this about a month before the battery so I didn't discover the wire terminal or be able to evaluate its operation until after the return window closed, so I am stuck. For lead-acid, this is the unit for you but forget trying to use it with anything else.
DWBeau
Reviewed in Canada on July 31, 2022
This model has been operating at our camp for 25 years. We live there 7 months of the year and this product has served us well.
BARRY MALLOY
Reviewed in Canada on June 12, 2022
Regulate power to batteries
peter
Reviewed in Canada on August 4, 2018
Fast delivery good quality
G.A.M. E.
Reviewed in the United States on February 24, 2017
Arrived promptly in good condition.Would not work on off-grid flat batteries.Worked once a fully charged battery was connected after which the remaining 3 batteries could be connected.Red led flashing in charge control mode, should be green! Needs led pulling out, turning 180 degrees and plugging back in. Does not affect charging just gives misleading colour.Connected to PV panels.
PR
Reviewed in the United States on November 11, 2015
With adequate current available from our charger, the C40 maintains battery charge to within a few tenths of a volt. The application is a battery back-up system on a remote ham radio repeater. We have two 200 AH batteries with charge current supplied by a 70 Amp DC supply. The D-Star repeater system is connected directly to the batteries. AC power for the computer and accessories is developed by a Xantrex sine-wave inverter, also connected to the batteries.The C40 is set to bring the battery charge to 14.5 Volts and then allow it to float down to 13.5 Volts. These are the levels recommended by the battery manufacturer. As the manual says it should, the green LED indicator on the C40 flashes when battery voltage falls below the float level. The number of flashes in the sequence tells us where the C40 is in its charge sequence. When charging is complete, the LED is constantly on.
Kemire
Reviewed in the United States on October 30, 2015
Well made with metal case so you can use cable connectors in the box knock outs. The electronic board looks to be very robust and the heat sinks look like they will last a long time. So far I am very satisfied with this unit and price was great. I am running 30 amps or so at 24 volts the unit gets slightly warm as to be expected. Power in and power out are very close not a lot of wattage lost in the controller. I am very satisfied and will order another for a spare.
Ben Fowers
Reviewed in the United States on October 13, 2015
Great device. It's not state of the art right now, but after researching the MPPT controllers I learned that they really don't work unless your PV array is made of very well matched panels. My panels were all differing sizes, not at all matched so I went with this controller to replace the older one that was no longer adequate. Now my batteries reach float almost every day by 2 PM. I'm also looking into a water heater that can be used as a diversion load and this controller can be easily converted to work in that mode. Highly recommended.
Rohan
Reviewed in the United States on July 10, 2013
I have been using this for about 3 weeks now and it is going good so far. It is ideal for a small startup. Later I will move to a MPPT but this is good for me now as I have only two 280 watt panels and charging 8 batteries from my 3KVA UPS.
Alien Male
Reviewed in the United States on May 24, 2013
I bought this for my PV system which is 5, 100W panels, a 1500W sine inverter, and 250AH battery bank. The controller comes default settings for a 12V charge controller (although it can be configured for 12,24,48 and a load controller, and more). It comes with a thick detailed manual in real English, and has internal adjustments for bulk charge and float charge levels. It took less than 15 minutes to install (4 connections plus mounting) and it works really well. With the 500W panel source, the heat sink doesn't even get warm, and it seems to cycle the batteries between bulk (14.5V) and float (13.8V) with great efficiency. I set the bulk and float charge levels based on my batteries with easy to read potentiometers in the unit. I would certainly buy this controller again if the need arises. Feel free to comment with any questions. There are no dumb questions, only dumb answers, so no promises... ;-)
Nomadic_Wolf1
Reviewed in the United States on September 20, 2012
This is a rugged, durable product that does what it say it will.Install was super easy, the instructions where very clear, and the product's built quality was very high.Mine is installed in a converted cargo trailer, and is being feed by 4x85w mono crystalline panels.It in turn feeds 8x125AH deep cycle batteries.The whole system is subject to the rigors of a mobile environment, including some off road adventures.The charge controller has worked flawlessly for over a year now and is holding up very well.My only Crits are having to open the case to access the hook ups, and that the punch outs can be sharp, and can cut youif your not careful.I also wish it wasn't so expensive but, compared to other controllers it's a steal!I am happy with this product and would recommend it to anyone in need of an inexpensive durable charge controller.
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