My 40amp mppt epever(TRACER 4210A) starts charging as soon as cells (a 12v 350w and a 200w in parallel) are producing higher than battery voltage (12 volt system, or up to 14.2 fully charged), can be sure because are recent purchases that i have been watching a lot, (unless display on controller and remote display tell lies). As all my outside lights are on system, i know it is charging as soon as it is barely light outside, as lights are set to turn off based on voltage from panels.
intrade,
Jul 2, 4:48am
yea maybe tell him . i was thinking he got some crap from the onehanglow districst and maybe fake tracer brand as tracer is a good brand but i seen it branded on wish and as you say he checks for real . i think he is going to start modding onhanglow ones next
gpg58,
Jul 8, 5:12am
I bought a fake mppt on here first, total junk, was only pwm. The best give away is the weight of the unit(but some lie about that too), which i now compare on various sites, the copper chokes in mppt ones add a lot of weight to them. Can confirm mine charges in all weather, all be it not a lot on a dark rainy day. Yes quality tends to cost a lot more. Now looking at changing to a combo 80amp charger, 5kw pure sign wave inverter and mppt cotroller, along with a set of 10 x 410 watt panels, just waiting for stock to arrive(already have batteries - 12v at 2000 amp hours = 24kw hours, or 12kwh of usable at 50%). It definitely is putting out what display says it is too, and it has to be really dark before it is doing nothing at all(when panels drop below battery voltage) and when above current to battery's is higher than panel output, so definitely mppt. Now have the wifi adapter on it, so i can monitor on cellphone, but disappointed it is only a local connection, and very short range (you have to connect to it from cellphone, which means disconnects wifi for other stuff while using, until you change back.
I did note him go on about not having a booster in them, but can see no point in that, as my panels produce enough voltage in any daylight, for controller to work, and when its getting dark, voltage drops very quickly, so very little or no energy to be gained by boosting that last gasp voltage to a charging level.
intrade,
Jul 8, 5:19am
i have a good pure sine wave inverter from burnsco my pome mate got it first and i trusted the specs and they are 100% accurate . if i get another higher power one i may make it the same brand dometic msi412] i tested it with my 3500\$ automotive picoscope its definet pure sine wave and the amp draw stand-by all meet spec or better.
gpg58,
Jul 13, 11:44pm
Me too, i have a huge heavy 10 year old one(forgot brand), which is only 1kw, and 1.3 peak, but does do it's 1kw non stop. The 3kw wavetech i bought seems ok, but was advised that although it is 3kw rated (6kw peak), not to load it to more than 75% for more than 15 minutes, disappointing, hence looking at upgrade.
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