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Yes you can, if you have VenusOS it can be connected to VRM and you can enable two way communication over the internet, which allows you can make changes to any supported hardware that is connected. Have a look at this...

The redarc will do the job and is comparable to the Renogy, both can only use 12V panels as most 24V panels will exceed the max voltage of both units. this shouldn’t be an issue in your setup, as long as you use two 12V panels in parallel. The main advantage of Renogy over Redarc is the...

Yes, do them separately then use those values in your other calculator to get the combined output at -1C. But -1C isn’t too bad, you are looking at about 10% increase in voltage so as long as you leave yourself a 20% buffer you should be fine. So you shouldn’t put more than 2 panels in series...

Good point. it would be interesting to see what the output of the current system is on a good day, if it rarely goes over 1500W then you really don’t lose much to the over-panelling at all.

Happy to help. Is the 250/60 for all 6 panels? If what you have works I wouldn’t replace it unless you don’t have room for two chargers. It is ok to have two chargers on one battery and redundancy can be handy if one fails. Temperature coefficient shouldn’t be more than 1.25x voltage unless...

Everything sunshine said is correct, he just missed you are also adding 2 more 455W panels. I agree with him that you leave the existing system as it looks good. Now you just need to work out how to get the most out of the new 2x 455W + 2x175W. Mixing panels can be done but you need to be...

Looking good! I’d put a breaker between panels and MPPT rather than fuse so you can disconnect easily, also fuse not required as long as wires can handle max solar current. Is there a reason you step from 8 to 12 gage wire on the panels? Should there be a small fuse between shunt and positive...

As Tom said, it’s going to take a long time to fully charge 200Ah at 15A. 200Ah / 15A = 13.3h, that’s 2 good days of sun in summer and maybe 4-5 days in winter, depending where you are. And that’s not using any of your power to power loads while charging. You might be better off with a Victron...

The DC loads will need to be connected to negative on battery, either via chassis or negative cable. You also need to make sure there is an appropriate fuse between positive terminal and dc loads. As FilterGuy said, a diagram is the best way for us to see what you have and what you plan.

I have also noticed the DIRECT charging mode, I have a feeling this is when your starter battery/alternator is at a lower voltage?? I tested my Renogy DC-DC 30A earlier. when I starting the engine the charger started in BOOST mode with a starter voltage of around 14.1V, then moved into DIRECT...

If you are limited on space there are a few dc to dc chargers that also have inbuilt MPPT, allowing you to also connect solar. The brands I’m currently looking at are Evedrive, Renogly and Kisae. I’m still in the process of deciding if I go with two dedicated chargers or a single combined...

@carl2591 how are you finding the JBD DP04S007? I'm looking at one for a small 100ah pack but can't find much info on them. I have been trying to make sense of the manual and it looks to me like it is saying the over voltage protection is 3.7-3.8v, which feels a little high for Lifepo4.. Do you...

There is an English translation of the B2A8S20P user manual, done by Energiepanda.com, but I can’t find the link.. From JK/J.JK-B2A8S20P.01 Ver: V1.1 5.2 BMS powerup After confirming the above operation is correct, you can power on the BMS, which has no power-on control switch and is designed...