Generally all these kinds of chargers work in parallel just fine.
What Solar Panel/controller Dc-dc Leisure Battery - Have You Got ?
- Thread starter Dellmassive
- Start date
Generally all these kinds of chargers work in parallel just fine.
I’ve got the 120w panel,that my converter fitted along with a Ctek!.......the panel popped the mppt!.....the replacement victron mppt has recorded 23.64V C/W cable losses over the last year!....
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Thanks for the info! you've definetely made my mind up now i will be purchasing a victron mppt to work alongside the rest of my hardware.
I have 2 brand new decent semi flexible 100W panels which I have knocking about and want to makes use of.
They measure 960mm x 660mm.
I know that the pop-top in question will have structural ridges running fore and aft and I wondered if anyone could measure the maximum dimension between the two most outer ridges for me?
I'd like to install the two panels on a single roof. The question is will they fit side by side (IE 660mm + 660mm in width) without looking shocking, as I am pretty confident that orientating them in this way will lead to some overhang of the last inch or so of each panel. (Outboard of the reinforcement ridges.)
I want to orientate the panels like this, as this fill give space forward should I want to install additional solar in the future.. (Picture I ripped off from Lensen's website):
My planned install will obviously look terrible compared to this as the picture above in on a nice flat pop-top which i wont have! The question is how terrible!
The cable exit points would look neatest if I could accommodate the panels as described, but I could fit them so that they are orientated with the 960mm dimension running transversely. The problem is then that the cable glands will exit on one side of the van. This messes with the symmetry and I'm not sure I can deal with that!
They measure 960mm x 660mm.
I know that the pop-top in question will have structural ridges running fore and aft and I wondered if anyone could measure the maximum dimension between the two most outer ridges for me?
I'd like to install the two panels on a single roof. The question is will they fit side by side (IE 660mm + 660mm in width) without looking shocking, as I am pretty confident that orientating them in this way will lead to some overhang of the last inch or so of each panel. (Outboard of the reinforcement ridges.)
I want to orientate the panels like this, as this fill give space forward should I want to install additional solar in the future.. (Picture I ripped off from Lensen's website):
My planned install will obviously look terrible compared to this as the picture above in on a nice flat pop-top which i wont have! The question is how terrible!
The cable exit points would look neatest if I could accommodate the panels as described, but I could fit them so that they are orientated with the 960mm dimension running transversely. The problem is then that the cable glands will exit on one side of the van. This messes with the symmetry and I'm not sure I can deal with that!
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OK People . . . its 2021
Lets see those solar updates and new systems.
just copy/edit/paste the list below and show us your setup. . . . . . And dont forget the pics.
***************************************
Copy & Paste the below to add your setup:
Solar Panel :
Mobile Panel :
Solar charge controller :
DC-DC charger :
EHU Charger :
battery bank :
Battery Monitor :
Inverter :
other :
***************************************
we also now have a similar thread about "show us your seat base" . . . . . .
www.t6forum.com
.
Lets see those solar updates and new systems.
just copy/edit/paste the list below and show us your setup. . . . . . And dont forget the pics.
***************************************
Copy & Paste the below to add your setup:
Solar Panel :
Mobile Panel :
Solar charge controller :
DC-DC charger :
EHU Charger :
battery bank :
Battery Monitor :
Inverter :
other :
***************************************
we also now have a similar thread about "show us your seat base" . . . . . .
Seat Base Electric + EHU + Solar Install + Charger + DC-DC -- How We Done it --
Seat Base Electric + EHU + Solar Install + Charger + DC-DC -- How We Done it -- id like to build a thread showing what's possible as regards to seat base builds. lets post a collection of our electrical installs, be it in the seat base or rear conversion. just EHU or SCR/VSR, charger, DC-DC...
.
A fixed Redarc 150w on roof
150w Redarc solar blanket
200w korr solar blanket
Redarc BCDC 1225d with mppt
Amptron lithium 240v 15a charger
150ah Amptron Lifepo4 175amp battery
Victron bmv712 monitor
No inverter
Have finally got a setup that copes with off grid camping in hot weather due to fridge cycling a lot more when van interior heats up and parked for more than 2 or 3 days.
150w Redarc solar blanket
200w korr solar blanket
Redarc BCDC 1225d with mppt
Amptron lithium 240v 15a charger
150ah Amptron Lifepo4 175amp battery
Victron bmv712 monitor
No inverter
Have finally got a setup that copes with off grid camping in hot weather due to fridge cycling a lot more when van interior heats up and parked for more than 2 or 3 days.
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Sounds awesome... got any pics?
The fixed panel has a 1 inch air gap underneath to allow ventilation. This is best practice in hot climates as flexible panels stuck directly on the roof can cook themselves and fail. Panel is a 150w Redarc. 
Solar Panel: Sunstore 195w semi flexible
Solar charge controller: Victron 75/15 smart solar + battery sense for low temp disconnect
EHU Charger: Victron 12/15 blues smart
battery bank: Valence 138ah lifepo4
Battery Monitor: Renogy copy 350 amp
other: Renogy 2000w pure sinewave inverter with ac passthrough
Solar charge controller: Victron 75/15 smart solar + battery sense for low temp disconnect
EHU Charger: Victron 12/15 blues smart
battery bank: Valence 138ah lifepo4
Battery Monitor: Renogy copy 350 amp
other: Renogy 2000w pure sinewave inverter with ac passthrough
Hi all, i am new here, so sorry for potential off-topic question:
I have OEM dual battery system. So there is original relay which can be replaced by DC-DC battery charger. If i will have 100Ah aux battery, it makes sense to have something like 20A charger. But, the question is: All car systems which are available when engine is switched are connected to aux battery, which means that they will be powered by charger, is it right? Then i can imagine much higher power consumption than 20A, so theoretically even if the engine will be running and all accessories will consume 30A, battery will be discharged by 10A? But choosing more powerful charger will damage battery if there will be minimum extra load...
Thanks a lot
MarF
I have OEM dual battery system. So there is original relay which can be replaced by DC-DC battery charger. If i will have 100Ah aux battery, it makes sense to have something like 20A charger. But, the question is: All car systems which are available when engine is switched are connected to aux battery, which means that they will be powered by charger, is it right? Then i can imagine much higher power consumption than 20A, so theoretically even if the engine will be running and all accessories will consume 30A, battery will be discharged by 10A? But choosing more powerful charger will damage battery if there will be minimum extra load...
Thanks a lot
MarF
Yes you can get Bigger DC-DC charger. . . to charge battery and run the extra loads . . . 20A for battery and 10A for loads, get a 30A DC-DC charger.
No extra power wont damage battery as battery Amp draw will reduce as battery charges up.
more info here:
Dellmassive’s "How I Done It" blogs.
-- Dellmassive`s -- "How I Done It" -- thread -- ************************************************** Dellmassive`s -- "how I Done It" -- Thread ************************************************** Kit List And Stuff -- How I Done It & What I Use --...
.
@Davidh
what controller? Victron MPPT 75/15? , so 15A max output?
the fuse needs to be at the battery end, to protect the cable from a short circuit etc. (so fused for the cable size)
depending on the length of the run . . . i would use a thicker 6-10mm2 feed cable with 30A midi fuse.
www.t6forum.com
have a look here as an example:
www.t6forum.com
what controller? Victron MPPT 75/15? , so 15A max output?
the fuse needs to be at the battery end, to protect the cable from a short circuit etc. (so fused for the cable size)
depending on the length of the run . . . i would use a thicker 6-10mm2 feed cable with 30A midi fuse.
Diagrams, Schematics & Wires -- How I Done It --
Diagrams, Schematics & Wires -- How I Done It -- ************************************************** Dellmassive`s -- "how I Done It" -- Thread ************************************************** Kit List And Stuff -- How I Done It & What I Use --...
have a look here as an example:
Diagrams, Schematics & Wires -- How I Done It --
Diagrams, Schematics & Wires -- How I Done It -- ************************************************** Dellmassive`s -- "how I Done It" -- Thread ************************************************** Kit List And Stuff -- How I Done It & What I Use --...
Yes it's the 75/15 as I'm sure the max output of the panel I've got is about 8A.
I was actually going to attach it to either my victron bp65 or a distribution post which I was told should be fine as I only really have space for the mppt under the driver seat and the battery is under the passengers. So it will be a very short cable run, probably no more than 50cm max.
Thanks I will check out that link you attached!
I was actually going to attach it to either my victron bp65 or a distribution post which I was told should be fine as I only really have space for the mppt under the driver seat and the battery is under the passengers. So it will be a very short cable run, probably no more than 50cm max.
Thanks I will check out that link you attached!
Solar Panel : Lensun 120w
Mobile Panel : unbranded 120w
Solar charge controller : CTEK 250SE
DC-DC charger : as above
EHU Charger : victron 12/10 blue smart
battery bank : Valence 138ah
Battery Monitor : BM2
Inverter : Flamezum 2000/4000w
other : Victron 500amp Shunt, Anderson connector for mobile solar panel under drivers seat.
drivers Seat has the following
2000w Pure sine inverter,
ehu 240v socket for
battery charger
diesel heat outlet
passenger
Battery
battery to battery/solar charger
battery monitor
victron Shunt Bluetooth
Vw fuses
Vw relays
Mobile Panel : unbranded 120w
Solar charge controller : CTEK 250SE
DC-DC charger : as above
EHU Charger : victron 12/10 blue smart
battery bank : Valence 138ah
Battery Monitor : BM2
Inverter : Flamezum 2000/4000w
other : Victron 500amp Shunt, Anderson connector for mobile solar panel under drivers seat.
drivers Seat has the following
2000w Pure sine inverter,
ehu 240v socket for
battery charger
diesel heat outlet
passenger
Battery
battery to battery/solar charger
battery monitor
victron Shunt Bluetooth
Vw fuses
Vw relays
The W/ Wh and solar output you get from a system depends on the state of the battery and the loads that you are running at the time.
if your battery is fully charged and you have no loads switched on then you will have no w/wh shown.
where as if you have a low battery and have all your loads switched on, there will be a demand for power so the MPPT should run in BULK mode show a large wh haul.
so if you want to max out your solar to see what you can achieve (max watts with miday sun etc ) . . . you need to load up your leisure battery with everything you have.
i normally use a 100w inverter and 240v heat gun or a 40A Tyre inflator . . . start this running then watch you watts go up to max.
as an example here is the readout from the solar shed . . . . the batterys are fully charged every day and only drain down 10% over night from the LED lighting.
the system is fully charge again by 7am . . . . so i show a low system yeild / w /wh.
450w of panels on a 100/20 MPPT.
....
same data from VRM cloud . . . but just today.
.
Thanks dell I understand how it all works etc just wondered what other camper set ups pull in over a full day in bulk?
gotch, . . .
what was the setup then the other day to get the 510wh . . .? running the hairdryer all day?
also why no previous days data? - newly connected panel?
and i see that the battery volts ranged from 13.2v - 13.5v - so a very good battery voltage (so not a flat battery then?)
so i was assuming you was drawing a large load all day to log the 510wh worth of solar?
ah . . . . just remembered you have a LIFEPO4 setup & a 75/15 MPPT . .
Van wasn't being used for a few weeks so turned the solar off when battery was at 95% then put the fridge on night before we were away so soc dropped again and solar was on catch up all day
