Solar help... Mppt or PWM
Hi.. I recently got a new solar panel from somewhere... fell off truck... lol I know mppt is the way to go im mysituation but am asking for advice... panel 250 watts volts 30v. Wh...
Forum Discussion
lawrosa wrote:
Im going to set it up on a stand and move it around to follow the sun..
If you are glutton for punishment. 250W panel weighs ~45 lbs and the size is awkward, 65" x 40". I have 2 of them on the roof. I would imagine it on a stand near shore cabin, but not carrying it in a truck and setting up every day.
lawrosa wrote:
The morningstar looks nice but is only a 15 amp model while that chinese unit is 20 amps..
As mentioned by many here, Morningstar has plenty of features, most of them I consider necessary for proper charging. Eco is very basic. You get what you pay for. 15A Morningstar model will exceed the limit occasionally , though unlikely will go up in smoke unless you are at high elevations. It might, but not likely.
lawrosa wrote:
Are there any other models to consider?
I am looking to do this on the cheap.
Go with Eco then. I doubt you'll find anything cheaper that also wouldn't be worse.
About 14.8V mentioned earlier - refer to YOUR battery manual to set voltages, including 14-something Absorption point. There can't be any "consensus" in these matters, every battery is different.
Eco is missing on this Abs stage, you can set it 14,8 (or whatever it says in battery manual), but it lasts mere seconds unless you are watching it and changing settings on the controller manually. This is one of the things that I don't like about it, and there are few others. But you won't find anything both cheaper and better.
