Running a fridge from solar power requires a storage battery to keep your food cold during those shady moments. This lithium battery is lightweight, yet powerful. It is designed to fit directly inside your Rovin fridge and simply snaps into place.
Lithium Battery for Rovin Portable Fridge: 12.8V 15.5Ah $49 (RRP $199) + $15 Delivery ($0 C&C) @ Mitre 10
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Virus-7 on 25/12/2023 - 02:07 mitre10.com.au (2894 clicks)
Last edited 27/12/2023 - 19:51 by 1 other user
Last edited 27/12/2023 - 19:51 by 1 other user
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Yes, with many of them.
With the 2038? This looks like a gen 2 battery.
This supports the 50L Rovin Portable Fridge or Freezer with Solar Charger Board plus Handles + Wheels that was posted here last year.This link confirms it works with this 50L single zone model ~ GH2238.
can you edit your post to remove the trailing comma to make the link work?
Work with the brass monkey 2038?
you bought 75l and got 95 ltr because they over book the orders. NOW YOU WANT A DISCOUNTED BATTERY??
How mean….:)
Thanks OP, got one for my 30L rovin :)!
This is the ORIGINAL battery that doesn't fit the newer brass monkey fridges. The new one has an X shape across the top
like this.
https://www.roadtechmarine.com.au/5-2ah-removable-lithium-ba…
That is just a style change and different external charging connector
Seems to only have a 27mm difference in the length. Not sure if it will still fit securely in this battery compartment though.
Rovin GH2206 (item in this post)
Length: 103mm
Width: 90mm
Height: 75mmBrass monkey GH2053 (https://www.jaycar.com.au/15-6ah-removable-lithium-battery-v…):
Length: 130mm
Width: 90mm
Height: 75mmI think that's a typo - supposed to be 130mm - have both fridges
Could these be shucked and used for other electronics? Anyone know what the max amp draw is?
I'd like to know if I could join 3 together for my sonsn36v quad bike too. Seems cheap at the price
No reason you can't run them in series to get the 36V. May require hacking them apart.
Pretty sure these are LiFePo4 batteries. They have a max discharge rate of 1c. So max discharge of 15.5amps. Unless you put them in a 3S2P configuration (6 batteries total) you likely wouldn't have enough current. It could also be as low as 0.5c or 7.75 amps per battery.
Their freezers seem to only draw 5amps at 12.8 nominal. I wonder how much more they designed the batteries for?
These are a bad idea, fridges are normally in hot cars and lithium ion batteries don’t go well in hot places. If you are using it in a car much better to buy one of jaycars lithium ion phosphate 12v batteries, I’ve had one for years in my boot and its been flawless.
Correct me if I'm wrong, but 12.8V nominal voltage suggests it is a LiFePo battery.
Potentially, I have contacted jaycar before to ask whether they were lithium ion or lithium ion phosphate and was told lithium ion. But the voltage may indicate they are indeed lithium ion phosphate.
Lithium iron phosphate.
Just fot interests sake, lithium iron phosphate (LiFePO4) batteries are lithium ion batteries. They just use lithium iron phosphate as the cathode.
Other cathode materials can be used in lithium ion batteries. Such as lithium cobalt oxide, or lithium nickel manganese cobalt oxide, or lithium nickel manganese cobalt oxide.
But they all use the reversible transfer of lithium ions between the cathode and anode.
The cathode material used is part of what determines the voltage. In this case, 12.8V indicates 4x 3.2V lithium iron phosphate batteries, because the other common lithium ion batteries have higher cell voltages. And as you note, lithium iron phosphate batteries tend to have fewer issues with high temperatures.
@Prong: Thanks for the overview, from what I can see, the typical cell batteries which don’t fair to well in the heat are NCR. Unfortunately on the Jaycar website they don’t mention voltage.
https://www.jaycar.com.au/15-6ah-removable-lithium-battery-v…
@Ozbfan: The battery in that Jaycar link (GH2053) lists 15.6Ah, and 196.56Wh, which means that rating is at 12.6V.
Which could just be LiFePO4 but using lower voltage to calculate the Wh rating.
Or it could be something silly like using the 4.2V per cell peak charge voltage on 3x 3.7V cells.
The now discontinued GH2019 (15.6Ah Brass Monkey battery that appears the same/very similar to the GH2206) has a 15.6Ah, 199.68Wh rating, so 12.8V.
It remains to be seen what these GH2206 batteries actually are when they turn up!
Or it could be something silly like using the 4.2V per cell peak charge voltage on 3x 3.7V cells.
Turns out it was this. So 11.1V packs, using 3x 3.7V cells. And dodgy Wh ratings. Oh well, still a great deal.
Thanks OP, these are compatible with this deal for a fair while ago now
https://www.ozbargain.com.au/node/715006Great bargain, thanks OP.
15Ah won’t last you very long without a hi watt panel and strong daylight. Better spend a bit more and go 50Ah
I don't think you understand how these work. They fit into the side of the fridge, they aren't external. They definitely have a purpose.
I think you'd still get a solid 5 hours or so out of one of these, unless the fridge is in direct sun.solid 5 hours
So won't last overnight
Nice one OP - these should work with all the Brass Monkey and Rovin fridges. The Versions don't make a difference - they just slightly changed the case style and size of the power brick external jack (no one uses this as the fridge can charge the battery)
Do you think it works with GH2068? I already bought the 15.6ah new version with the X for about $150 after cashback but for $49 this would be a great backup. 15.6ah gives around 6 hours battery life.
I think so - at this price you could flip it up on eBay if there is any incompatibility (but I don't think there is)
I missed this deal but do you know if any of the ones on Aliexpress would fit e.g. this one? I have a Brass monkey 2038 https://www.aliexpress.com/item/1005005077053631.html?pvid=1…
also not sure if they're LiFePo4 or not.@sav11: There is a comment "Works perfectly on my brass monkey portable fridge" in the listing.
With ALiexpress, I wouldnt necessarily trust I would be getting the real cells inside. and not so easy to return if anything goes wrong
I would definitely be buying a battery like this locally with B&M support if at all possible
Ugh had in cart and sold out from under me…
Looks like back in stock?
Depends on location. Sold out around me and no delivery to my post code
Me too and I really need one. Brisbane stores nothing. Does anyone know if there is a stock checker website for mitre 10 like bunnings?
Ah too bad. Hopefully you can get 1 some where else
Yep appears to be all out of stock in Melbourne
@goingDHfast: Nothing in Brisbane but I’m still trying different postcodes. I wish they had a stock locator website
@J B S: Are available at Home Hardware too - they are the same group but you might get lucky at your local
All sold out…
Has anyone been contacted to pick theirs up yet?
not yet
Nope
Got mine today. Got the call a week ago but had covid
Mine is ready for pickup today in Adelaide. Does anyone know if this fits the 50L rovin that was on sale earlier this year linked below? Have just read a comment on that page that suggests that is it sadly probably a no - https://www.ozbargain.com.au/node/758445
If no, I might just not pick it up and try and get a refund. Or are these actually genuinely normally $199? If so I'll try and sell it online.
Does your fridge have a slot for the battery?
What specific model is it? The Mitre 10 page (now gone) didn't specify, and IIRC the exact model code was not confirmed in the thread.
The batteries usually sell for much more than $50, so you should be able to sell it ok. Probably not for $200 though, as they were often in the $100 - $150 range.
Thanks for the response. It’s a GH2264. I can’t access the fridge at the moment to look re slot. The box doesn’t mention anything about battery.
I don't think the GH2264 has a slot for a battery. The similar GH2238 does.
So this battery likely won't work for your fridge. But double check it just in case.
There is probably not an easy way to rig up this battery to run your fridge externally either.
My GH 2206 just got delivered.
11.1V, 15.6Ah. So not the same as what was advertised, but seemingly the same as GH2019 from Jaycar.
So it should work as expected in the compatible fridges. But isn't going to be a LiFePO4 version as some of us hoped.
My fridge is elsewhere atm, so I can't actually test it till tomorrow. In the meantime I will charge the battery, as it arrived with no charge. I will hold off opening it for now, since it appears to be glued shut.
Both Rovin and Brass Monkey are manufactured in the same factories by Alpicool.
Was 99.98% sure they wouldn't retool batteries and fridges with no advantage in doing so.
Good news though - means this battery will fit all our fridgesYeah it was not much of a hope, and certainly too trusting of the listed spec!
One interesting/annoying thing is that for the other similar batteries, assuming 11.1V as well, they list the Wh rating at 12.6V - so at 4.2V per cell.
I had been thinking the advantage of a potential switch to LiFePO4 would be because of cost, as many of the larger capacity LiFePO4 cells are getting very cheap, due to increased mass production for ebikes.
EG, 4x 3.2V, 15.5Ah cells - though in hindsight, that probable needs something like 33140 cells, which would not actually fit. Or use pouch cells.
I have not actually investigated how the fridges do the charging in terms of battery BMS and what input voltage they get from the fridge. I went as far as thinking the 14.5V from the wall charger is fine for charging 12.8V LiFePO4, and the 12.6V input would probably be omitted or for the few amps needed, need a boost module that would cost in the tens of cents range.
Just picked up this 12.6v 2A charger on sale for $20. Make sure you get the right one, not for the new version 3 battery as the connecter is a different size.
https://www.jaycar.com.au/12-6-volt-power-supply-for-chargin…
Got the call from Mitre 10 today, sorry but your order cannot be supplied and you will be refunded!
I also got a call today, but luckily my order was ready for pickup.
Mine arrived today. I was expecting a cancellation after this long so it was a nice surprise.
Finally received an email to come collect mine today.
For reference, inside pack is a 3s7p 18650 with cells marked "CMICR18650F8 ZAD 3.7V 2600mAh 8C" and a BMS marked "AK02 T500-2". Can't see any ratings for max current.
Interesting! So definitely 7p, so 21 cells total?
That puts it at 18.2Ah, so better than rated. Perhaps they use conservative discharge / charge voltages to extend longevity.
Is it compatible with Brass Monkey?