Renogy Battery Monitor

[mikefitz]

The monitor and the solar controller will be taking power, but less than your numbers. The specification for self consumption of the Renogy solar controller is 0.1 of an amp, about 1.2 watts. The monitor with back light on is a similar power, 1.2 watts

The Renogy monitor may have a significant error in measuring low value currents.

You have B2B charger and AC charger and camper DC loads, are all these disconnected?

 

[markjel]

I'll check first thing in the morning on that and let you know.

 

[markjel]

I'll check first thing in the morning on that and let you know.

 

[wme]

Looks good, a normal SLA battery at Float voltage.
Has the SCC and the battery monitor been calibrated?

 

[markjel]

Looks good, a normal SLA battery at Float voltage.
Has the SCC and the battery monitor been calibrated?

Battery monitor calibrated, not sure about the SCC, how do I do that?

 

[MisterB1959]

Mark, as your post is related to a motorhome in the UK, try the Motorhome Fun Forum. There's lots of good advice and possibly some members who have had similar experiences.
The downside is that it costs to be a member, unlike this brilliant forum, but you may find it's worth the subscription cost as motorhomes consist of more than just a leisure battery system !! You do get five free posts though, so take a read through previous posts before using them up, the answers (other than the layout which appears to have been answered) to your issues may have been raised and resolved previously?

 

[mikefitz]

An alternative UK forum you may wish to visit, SBMCC. Free 5 first posts then subscription . Unlike Motorhome Fun it entirely covers all aspects of self build. It's a forum I contribute to as technical moderator.

Whilst discussing the watts reading you have, note that with panels connected, under daylight conditions there will always be a small current into fully charged batteries.

Battery monitor calibrated, not sure about the SCC, how do I do that?

The monitor is set to the full, 100%, by entering the voltage of the full charge volts set up inthe Renogy solar charger, this will be around 14.4volts. See page 6 of the instructions, set Full V l to 14.4 and Zero V to 11.0. When the monitor 'sees' either the full or zero volts it sets 100% or 0 %, for new batteries set the capacity lower than specified by 10Ah per battery, that's 250Ah . With use the capacity will gradually reduce, light use may see 5 to10 % per year, heavy use much more.

With the solar charger set to the default for sealed batteries, see page 19 of the instructions. The default settings will be OK for your batteries. Disregard the battery state shown on the charger, its not very accurate.