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Hi squowse, in the end I went with Victron SCCs, even though they cost about twice as much as the EPevers. Perhaps useful to know, on the Victrons, the on/off functionality requires a 20$ cable for each SCC and the SCC defaults to 'on' when the cable gets disconnected from the SCC.

https://marinehowto.com/ https://marinehowto.com/lifepo4-batteries-on-boats/ https://nordkyndesign.com/category/marine-engineering/electrical/lithium-battery-systems/ Nigel Calder's "Boatowner's Mechanical and Electrical Manual" is also worth a read for anyone diving in boat electrics.

If you can get it to fit: a Leece-Neville 'firetruck' alternator on a serpentine belt. Lots of amps, quite efficient and affordable yet large and heavy. A nice regulator, one of the better ones on the market because it can limit current effectively. No, but thinking about which BMS for lithium...

Are you sure that the X2 BMS has CANbus?

The only place where 'continuous current' is mentioned is in 'Max. continuous load current'. This refers to the load output current and not the battery output current. The maximum continuous battery current is given by 'Rated charge current'. This 'Rated charge current' is what gets used in the...

Not sure whether this has been discussed already. As far as I'm aware: 'load current' = current drawn through the SCC 'load' output and 'charge current' = current drawn through the SCC 'battery' output. The 'load' output is usually only used where you want the SCC to be the BMS like in solar...

Something that you might want to add in your calculations is the inverter efficiency. They tend to waste at least 10 % in heat. Be aware that inverters draw quite a bit of power just by being turned on.

That will be around 60 hours runtime indeed, well done! Though do take care of the units: electrical energy is expressed in Wh and electrical power is expressed in W. Interesting question and well spotted. As you noted earlier, a consumption of 345 kWh/year translates to an average power of 39...

Not sure where you get from that the 100/20-48 can only handle 1 A charge current. In the datasheet I read one entry that says "1 A" but it assume it relates to the 'load' output. I don't think you need the 'load' output in your motorhome application, do you? For inverters it is standard in the...

The Torqeedo batteries are rather poor value in my opinion as they use NMC and not LFP chemistry. The NMC chemistry is a bit lighter but is nowhere as robust as LFP. They price them around 1 euro/kWh. Top quality LFP cells (Winston) go around 0.4 euro/kWh, including VAT (from gwl.eu). Bulk cells...

This makes it even weirder. If you don't mind more questions: does the issue occur only in bulk, only in float or in both? I've the impression it occurs only in the bulk phase (and not in float) in the case of tim0shel?

So, to wrap up: - there is plenty of sun and the panels are not shaded whatsoever - the battery voltage measured by the SCC is lower than the float voltage minus the re-bulk voltage - the above is continuously true for several minutes (the SCC decision making algorithms have some strong low pass...

In the Victron SCC settings in the Bluetooth app, at what voltage do you have set the "Re-bulk voltage offset" (enable "Expert Mode")? The default value for the Victron LFP profile is 0.2 V per 12 V, so in your case 0.8 V. This more or less matches with your observation that the SCC restarts the...

If you install the main fuse at the battery and the shunt after the main fuse, then the Electrodacus BMS may indeed be damaged if the main fuse blows due to high common mode voltages on the shunt. Ensuring that the shunt always stays connected to the battery results in the shunt common mode...

I think the cable between the battery and the main fuse should be as short as possible and therefore would not put the main fuse at the Lynx. The idea behind this is that if you put the fuse at the Lynx then the positive cable from the battery to the Lynx remains unprotected. Suppose that you...

The 150/60 should have a fuse between 70 and 80 A according to the manual. For the 24/3000/70 Victron specifies a single 50 mm^2 cable for runs up to 15 ft (at least according to the 230 V version manual, but the DC current is the same for the 110 and 230 V version). 2/0 AWG is about 70 mm^2...

Elaborate post and tidy layour, nice! I remember the Multiplus manual giving specific recommendations about cable and fuse size. I don't immediately see reasons to deviate from those? FYI Victron also wrote a rather decent guide about wiring...

Found the following in a datasheet of the EVE LF280 (file LF280-73103, version B). As far as I understand, it confirms that the cells do not like fast charging at low SOCs, even at normal temperature (25 °C). Regarding their 3500 cycles, those appear to be for 0.5 C charge, 1 C discharge. This...

Appreciate your thoughts. The Tracer series indeed allows setting voltages, yet it cannot measure the total battery charge current. For charge termination we would prefer to take both voltage and current into account, as explained in the Nordkyn article mentioned earlier. However, this is...

Hi all, I need a set of good MPPTs and was looking at the EPever range as they appear good quality and rather affordable (compared to Victron ones). I would really like them to have an input that allows to enable/disable them, as is described in the Nordkyn articles (TLDR: enable/disable...

You will have a great time, enjoy it. May I ask, what do you mean exactly with 0.012 A? A current of 12 mA sounds quite low to me in such a large system. I assume you mean 'opens' and not 'closes'? I understand that the LA battery always remains in the circuit whatever the BMS does, so the...

(reply to own question) Found a previous thread: https://diysolarforum.com/threads/lishen-272ah-thread.12871/page-14. Apparently this is rather common, and the cells appear to be perfectly fine.

You're right, the 30 % is indeed more of a guess based on the voltage I measured. My multimeter showed 3.25 V.

First of, I hope I'm posting in the correct category. If not, sorry for the inconvenience. First post on this forum :) I did some searching but couldn't find a similar topic. I got some Eve 280 Ah cells from Alibaba from a seller with a good reputation. These cells were sold as "new" and "grade...