Still confused on solar....

The Morningstar Sun Saver Controller specs identify a multi-stage charging process, so when the batteries have reached full charge, the controller will provide a maintenance charging process. (float mode)

Therefore, there is no need to remove the connection cables as the batteries will not be overcharged. The connections can be left in place indefinitely.

In practice, the batteries will become partially discharged overnight, assuming the fridge is left on, then during daylight hours, the solar panels will (hopefully) return the batteries to a full, or near full charge, depending on the amount of full sunlight available.

A 100 watt panel should be able to maintain the batteries running the MT45 "indefinitely" while stationary.

Hi,

this particular solar regulator doesn't offer multistage charging.
But your smallish solar panel won't come up with much spare energy so the amount of over-charge will be small, if any.
I'd be more worried about under-charging the batteries in this setup.
Therefore I recommend to connect a multimeter/voltmeter across the battery terminals to get an idea about their approximate state of charge.
You may have to find an alternative way of charging for those overcast days, or disconnect the fridge for a while if that's at all possible.

cheers, Peter

Hi Nootsa, Just leave it connected, the controller will regulate the power to the battery. I am not familiar with the Sun Saver brand, but with what your running, you will have to have sun all day to get them charged fully.

Hi nootsa,

We have a similar set up with a similar load. We leave it hooked up while we are in camp and we haven't had any problems.

Steve

Hi Nootsa, I think you need to specify EXACTLY which Sunsaver model you have. Some models go into trickle charge and some don't. Check the Sunsaver website for specifics and then believe what the official website says for your specific model. Cheers

Still confused on solar.... Me to nootsa..... regarding under charge.

A good friend has a primus 60L fridge & priums 80W solar panel and he tells me that it keeps battery fully charged .

Also if its got a regulator then that should be that surely !!!!

cheers