Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

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Ally

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Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 04.01.2020 · #1

Purchased one of these "Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp" I have it fitted but not wired yet. Hopefully in the next few days.
It seems to be a quality product and is a lot bigger than I imagined. I'll do a little review with the very limited knowledge I have on electrics and watt's and amps and volts and headaches

It has a LCD display so I shall photograph what its doing, but if anyone has any technical queries then just ask how to perform them and I will do it.

I purchased it for £170 locally, I see here it can be bought for £160: https://www.splitcharge.co.uk/…ontroller/

More soon.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 05.01.2020 · #2

What’s it for?

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 05.01.2020 · #3

Quote by the fat controller

What’s it for?

My guess John is that it is for his new van,to automatically charge his habitation batteries when he is on hook up.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 05.01.2020 · #4

I thought his van would do that anyway, is it to charge his vehicle battery?

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 05.01.2020 · #5

Quote by the fat controller

What’s it for?

An intelligent split charge relay. Charges the leisure batteries better when you are driving as it uses the engine battery, reducing its charge and making the alternator work harder therefore putting more charge into your leisures. Its is also an MPPT solar regulator and it decides which is best to input your batteries.

It charges on a 3 stage charge for a better charge so should prolong the life of leisures.

Alternators are not good at charging leisure batteries, you would need to drive a long long time. The sterling one that @baguette has I would say is a lot better but its twice the price.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 05.01.2020 · #6

Quote by Ally

Quote by the fat controller

What’s it for?

That Ring unit is very interesting though. I like the way it's a dual function unit which would appear to do a good enough job for a lot of people and also simplify the installation wiring.

On an associated issue. all those chargers and solar charge controllers we have which may have cost several hundred Euro (Pounds) would become scrap if a person was to change to LiFePO4 leisure batteries as they require a totally different charging regime. I wonder does anybody make a unit similar to the Ring one which is set up specifically for looking after LiFePO4 batteries.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 19.01.2020 · #7

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 19.01.2020 · #8

Amazing difference!

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #9

Does it only work with Lithium batteries.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #10

Any batteries.

I think that video is a bit misleading, but correct all the same.

The fridge would carry on getting the power from the alternator. The batteries would be getting their power from the engine battery, so after it was installed, the fridge wouldn't make a difference.

But as you can see, it's a hell of a better job at charging the leisures.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #11

That video they use 16mm Cable. The Ring manual says use 4.0mm2(minimum), I bought 6mm2. Now I'm thinking its not big enough.

Experts?

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #12

Are you seeing a difference over an ordinary split charge ally? Faster charge? Shorter time to fill ? Better solar control?

Ally

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #13

Quote by JJF

Are you seeing a difference over an ordinary split charge ally? Faster charge? Shorter time to fill ? Better solar control?

Haven't wired it up yet!! too damn busy, hopefully doing it today.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #14

Min 16mm, but go higher if you don’t want excessive voltage drop on the cable. I pulled out the existing wimpy cable on my split charge circuit and put in 35mm.

My alternator voltage, 14.35 Volts is about 14.2 Volts when it reaches the leisure battery which is situated the opposite end of the van. That will never be enough to charge my battery to 100%. A battery 2 battery charger is the way to go. It will do the bulk, absorption and float stages that a dumb alternator will not.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #15

I'm not even sure the 16mm will fit the Ring terminals, I'll check. of course I will be looking for the maximum return that I can get. They then go messing with mm2

I looked at the package again - I bought what was sold as 6mm, is that 6mm2 still? The I am seeing something like AEG sizing as well.

This article has some links to cables: http://www.aandncaravanservice…argers.php

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #16

When I see mm I assume it is mm2 as that is how people abbreviate. But be careful. Technically, 6mm2 refers to the cross sectional area. Where as just 6mm would refer to the diameter. That’s a huge difference. 6mm diameter is a cross sectional area of about 30mm2, which is heavy duty. But 6mm2 is not heavy duty, it is very light duty.

Can you measure the diameter of you cable conductor? If it is 6mm your good. If it is less than half that you could be running to light.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #17

Ahh, is that how it works. I'll measure

Daffysparks

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #18

I have never seen a cable measured in mm. Always sq mm. Awg stands for American wire guage. It’s there way of measuring cable sizes. The lower the number the bigger the cable. Go figure

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #19

4mm to 6mm is enough 16mm would be ok if you where operating a starter or inverter .

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #20

The cable I bought did say it takes 50amps.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 20.01.2020 · #21

We’ll stick it in and see how it goes. You can always check to see if there is a significant voltage drop across your cable once in operation. Chances are it will be fine.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 24.01.2020 · #22

It's now wired up and after a hesitant start, working. Only a small test as it was dark and dinner was ready

Varying amps input, but it went as high as 37 amps into the leisure batteries..

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 24.01.2020 · #23

Quote by Ally

Varying amps input, but it went as high as 37 amps into the leisure batteries..

Great stuff. Em,.. maybe keep a fire extinguisher nearby while testing Ally. Always handy to have one nearby eh.

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ntg

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 24.01.2020 · #24

Quote by Ally

It's now wired up and after a hesitant start, working. Only a small test as it was dark and dinner was ready

Varying amps input, but it went as high as 37 amps into the leisure batteries..

Hi sir you will be selling to the grid with results like that.

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Daffysparks

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 24.01.2020 · #25

Quote by The Rambler

Just to put things in perspective...
6mm sq cable is normally used to wire cookers in a house. I wouldn’t necessarily call it light guage. Obviously in a 12 volt system the current is almost 20 times higher than at 240 volts

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 24.01.2020 · #26

I used 6mm2, the manual said 4mm2 minimum and I purchased 6. After investigation the terminals would take more, but not 16!

Daffysparks

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 24.01.2020 · #27

I’m fairly confident that 6 mm will be fine for your purpose. I would, though keep the cable run as short as practical. 6mm will run 40 amps continuously, with a short run.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 24.01.2020 · #28

It says it's 30amp to DC and PV, not sure why I was seeing 37 today.

More investigation needed.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 24.01.2020 · #29

Quote by Ally

It says it's 30amp to DC and PV, not sure why I was seeing 37 today.

More investigation needed.

Perhaps you need an optician not an electrician

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 24.01.2020 · #30

That could well be it

it was also dark and I was hungry

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 25.01.2020 · #31

Quote by Daffysparks

Yeah, fair enough. I’m just making the point that there is a big difference between 6mm diameter and 6mm2 cross sectional area . I have found it confusing at times, because when the squared term is omitted it might lead you to think that it is referring to the diameter. A 6mm diameter, is the equivalent of about a 30mm2 cross sectional area. So a 6mm2 is a much lighter duty than a 30mm2 cable, is all I’m saying.

I’m a little surprised though, the manufacturers recommend 4mm2. I mean, split charge kits will supply 25mm2 and above, such as welding cable. At 12 volts, the conductor thickness is typically big. Bigger than cooker wire.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 25.01.2020 · #32

12v systems will suffer drastic voltage drop (especially in a high current application) if the cross section of the wire is too small. This is especially prevalent in a charge circuit where the current demands can be very high.

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Daffysparks

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 25.01.2020 · #33

6 sq cable at 30 amps with a 5 metre cable run will have between 0.425 and 0.474 volt drop. Depending on your calculation formula. This 5 metre cable run includes both positive and negative cables, so in essence a 2.5 metres distance from point a to point b.
If you are happy with that loss, you are fine, if you’re not ,

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 25.01.2020 · #34

That loss would be acceptable David, especially when voltages peak at 14v+, the current loss would be acceptable and the risk of loss due to thermal overload would be low on 6sq.
Another factor people neglect to think about is joints, loss at joints on cables can be high.
As with everything electrical it’s best to perform to best practices with proper materials.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 25.01.2020 · #35

Jon, it must be noted too, that it won’t be drawing 30 amps continuously. It will be lower on a lot of occasions. I’d be satisfied with it anyway. Regarding joints, terminations, etc. I would just assume it would be done correctly, using proprietary fittings, if not, well you shouldn’t really be at it, at all.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 25.01.2020 · #36

Well the way this ring unit can deliver current, the only thing I’d be keeping an eye on is the fuel gauge

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 25.01.2020 · #37

Quote by The Rambler

Well the way this ring unit can deliver current, the only thing I’d be keeping an eye on is the fuel gauge

Cheap Ring battery to battery for sale. Any takers?

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 25.01.2020 · #38

I’ve been in the automotive industry along time the ring charger is an inverter from 14.7 v to 220v AC down to 14.7 V DC peak 30amp regulated? battery sensing 10 amps dropping poss 6amp

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 28.02.2020 · #39

Last week I never charged the batteries before heading away. First night they were fine as I obviously drove there, but thought I would start the engine.

A quick 15-20 minutes putting in 27 - 32 amps and they were back up again and they stayed that way all day.

Very happy with it so far.

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Re: Ring RSCDC30 DC To DC Smart Battery Charger 12v 30amp

· Posted: 31.05.2020 · #40

Due to lock down not much further with this review, hopefully update it soon

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