![]() ![]() Without temperature compensation, the charger will just keep putting the 14.4 volts in. If a battery wants, say, 14.4 volts at 77º F, then the "equivalent" of that in cold temperatures will be closer to 15 volts (there is a chart). Different batteries want different voltages.Ģ) Remote (on-battery) temperature compensation. Note that this is for lead-acid (flooded or AGM):īTW, this basically applies to solar chargers as well.ġ) User adjustable voltage parameters for absorb and float stage (in other words, not just three stage, but you can SET the voltage value of the stages). But if you want to set up a robust system for boondocking and/or long battery life, then here is what I'd look for: I could see putting in one of those if you are in the mode of buying cheap flooded cell batteries and then just replacing them annually or maybe semi-annually. "Three stage" is an improvement over no stages, but you can do better. The reason is that I believe both you and the charger should be able to control what's going on. Unless they have made some big changes since 2015, I wouldn't recommend one of the "drop in" replacement converter type chargers. Isn't the Freedom inverter different than the Controller/charger? If so, I must have inverter tucked away somewhere, I cannot find it. What solar charger did you replace? I have the Mark 15 from Speciality Concepts and wasn't sure if this needed to be upgraded as well. Below is pic of the 7345, it seems still in-place. The kits are designed to fit in the original housing, so you have to look inside the brown box to see what is actually installed.Ĭaconcourse wrote: ↑ December 1st, 2018, 11:20 pmĮxcellent info on blog, exactly what I was looking for. Since you have manuals for the Freedom 458, it is possible the previous owner already swapped out the Magnatek 7345 for that unit. You can save a lot of money if those items happen to be in returned stock. My refrigerator Dinosaur card replacement was also a used-like new purchase. These are generally units that are returns, so have to be sold as used, but are usually unused. I noticed they happen to have a "used-like new" one available for $170. Here is a link to my blog describing the upgrades and installation instructions: I also replaced the solar controller/charger which had the same problems. I got a "used-like new" Progressive Dynamics 4645 upgrade kit from Amazon, and the batteries have been perfectly maintained for the last four years. I left the new-to-me Chinook plugged in for a week, thinking it would keep the (new) batteries in good shape, and the fluid had already started boiling out of the batteries due to overcharging. ![]() I replaced the Magnatek converter/charger as one of my first and most important upgrades.
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