![[eBay Plus] Victron Smartsolar MPPT 75/15 Bluetooth Solar Controller $74.09 Delivered @ Micktron eBay](https://files.ozbargain.com.au/n/42/851842.jpg?h=5836369c)
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While searching for an MPPT for https://www.ozbargain.com.au/node/850518, came across this which seems to be well regarded and has a lifepo4 charging profile which is important if you have a lithium battery
[eBay Plus] Victron Smartsolar MPPT 75/15 Bluetooth Solar Controller $74.09 Delivered @ Micktron eBay
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No Child Support on 18/06/2024 - 09:47 ebay.com.au (661 clicks)
Last edited 18/06/2024 - 15:41 by 1 other user
Last edited 18/06/2024 - 15:41 by 1 other user
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Agreed but for my use case, its just to trickle charge the battery with the fridge connected to it
Yes and these have direct DC output so you could run the fridge and charge the battery separately if you wanted
If it’s agm that’s only 50ah flat to refill, at 15a items only 3.33hrs needed
True but many people are going LiFepo4 now and you can run them right down to 20%, so more recharge need under those conditions
Let’s hope they’re not doing 80ah/day on a 100a battery then haha
@Lolitsjoel: In my case it is more of an emergency back up if (when) we get the next blackout. I bought one of those Gentrax 100Ah ones.
I read its OK to run them right down 80, even 90%. Haven't tried yet but it is supposed to be OK
Id consider lithium users to be the exception rather than the rule, they are still prohibitively expensive to anyone that doesn't rough it every second weekend.
@doobey1231: There have been a few LiFePo4 deals for 100Ah around $200 and a cracker of a deal: 200Ah for $350 a few months back
here https://www.ozbargain.com.au/node/839717
Note you can over panel these a LOT. With the price of panels these days this makes a lot of sense. If you put 400W of solar on this it should sit on a flat 15A on a half decent day.
And 400W isn't what I would describe as a lot of over panelling. I'm not sure the exact limit but it would be a lot higher.
Spec sheet on link above. 220W @ 12v, and 440W @ 24v.
Assuming 12v, 400w is a fair bit to be punching into it on a bright sunny day!
I looked it up, max is about 600W depending on the panels. Other Victron controllers allow greater over panelling. You just need to keep the max Isc of the combined panels below 15A
Is this only suitable for 12V solar panels used in camping applications, or will it also work with a house-type panel ~40V?
It will work with a house panel up to 75V
In fact it will work better with house panels. You can generally not series up the house panels though as that will exceed 75V. You can come exceed the rating wattage though and it will just limit the current to 15A
My project is to power a remote 4G PTZ camera using a single ~300W house solar panel, this MPPT solar controller and a 100Ah LiFePO4 battery. The camera only draws about 5W under normal operation, but has a lot of shading in a valley amongst trees, and needs to run in extended periods of poor weather so I'm trying to overkill the panel and battery (plus I can get house panels for free) to prevent any outages.
Does that sound like a sensible arrangement? Would a cheaper AGM or lead-acid battery be a better idea?
Probably be ok but I'd prefer a higher voltage panel.
I have those exact two and planning to use this MPPT to charge the battery.
The solar mat has a built in controller that outputs 18v DC (unregulated) that I will connect to the MPPT and from the MPPT connect to the battery via my battery box's Anderson inputs
I've just started looking into solar for LED lights for my driveway and most recommend 2x the wattage of the battery. So for a 100Ah battery you should get 200W panel(s).
And for that size battery/panels you could save some money and get the $15 solar controllers.
One example:
https://www.amazon.com.au/Upgraded-Controller-Intelligent-Mu…
What's the streetfunction do? I ordered one for the streetlight function (and for MPPT) thinking it would turn the load on/off but now that I've looked further into it, it sounds like it only supports their relays through their 4pin connector?
https://community.victronenergy.com/questions/16448/what-is-…
Can someone with one confirm this?
From my understanding, whatever is connected to the Load terminals is controlled by the streetlight function.
Only the smaller MPPT's like the one listed have the Load terminals, so function without the additional relay.
Thats PWM not MPPT; pay the extra.
But you can find cheaper MPPT controllers, just make sure you youtube for some actual tests, because most sellers are lying.
For example the brand "MPPT Solar" isn't an MPPT controller.
$73.05 at Springers Solar with the code EOFY24 - https://www.springers.com.au/shop/scc075015060r-victron-smar…
Free delivery in QLD.
https://files.ozbargain.com.au/upload/240432/113465/springer…
$54.52 for me at springers solar with the automatic code…. plus $14.95 delivery to regional SA.
dunno what's different from the frugal ferret's link…. I'm looking at the checkout price
or just google it, and see this price… something weird going on!
There's a "Bluesolar" and a "Smartsolar". You have selected Bluesolar.
ahhh…that explains my confusion. I selected the model quoted in this deal… the ferret selected a different model.
the difference is the "smart solar" has bluetooth connectivity.correction… the model quoted in this deal is described as "bluetooth solar controller". I was wrong….
bottom line, $55 plus shipping (if applicable) from springers if you don't need/ want to pay for bluetooth
Anyone has good tips on dual battery chargers - what's the best way to set it up?
I have a single source from solar, and two separate batteries that I want to charge in priority order.
There are only very few dual battery chargers, so I was thinking maybe use a DC-DC charger?
Tips? Experiences?$75.20 at Power Products Direct (Springers Solar) on ebay with 20% off code "NONFY20"
https://www.ebay.com.au/itm/282649091056?epid=19032580447&it…
Not bad but you would probably need at least 20 amps if you want to be able to charge a 100aH battery in a single day