150 amps usable power

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headlight

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At present I have 2 x 100AH lead acid leisure batteries, giving me roughly 100 amps usable power with no charging input.
I want to have 150 amps usable power for 3 night stays in winter (3 days at a max of 50 amps per day) without EHU, negligible solar input and not having to go for a drive for the B2B to recharge my batteries.
My Victron MPPT and Sterling B2B have lead acid, gel, AGM and lithium charge profiles.
As I don't need the heavy drain capabilities of lithium, my inverter is only 300 watts and it is only used for my 40 watt mains TV, I am leaning towards a pair of Leoch Xtreme 110AH AGM's.
They are the right size for my space, the posts are the correct orientation for my wiring so no wiring modifications required and are only £150 each.
I believe that these batteries can be safely discharged to 20-25% SOC which will give me my 150 usable amps.
I know some members don't rate/like AGM's, such as LennyHB :ROFLMAO: but from what I've read if your charging systems have the correct charging profile for them they are ok.
Opinions wanted on my proposal as to why I should or should not do this or other battery chemistry suggestions that would be better for my usage ?
 
Lenny HB said:
I'm out. :rofl:
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I thought you might be lol however I do value your opinion, so fire away I can take it :rofl:
The AGM's I suggested are certainly the easiest and cheapest option as they will just drop in with no modifications and all I have to do is alter the charge profiles on the MPPT and B2B.
What would be your suggestions as to what would be the best batteries for my usage Lenny and why please.
 
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Just don't mess about get 1 fogstar 300amp battery and you'll have well over 150amps to use, and save weight. You have the required settings. It's a no brainer IMO
 
Yes that will do what I want but I don't need 300 amps of usable power and its £850.
Outdoors Dad said:
Just don't mess about get 1 fogstar 300amp battery and you'll have well over 150amps to use, and save weight. You have the required settings. It's a no brainer IMO
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my son has 2 x Leoch pure lead carbon 100ah batteries for sale at £300 the pair

i think they retail at nearly £280 each

www.alpha-batteries.co.uk

12v 100AH Leoch Pure AGM Lead Carbon PLH+ C100 Deep Cycle Leisure Battery NCC Class A - Alpha Batteries

12V 100Ah Ultra Deep Cycle battery for multiple applications – from Leoch’s Pure Lead Carbon series. Features • Pure Lead […]
www.alpha-batteries.co.uk www.alpha-batteries.co.uk

mint condition and just a few months old but only used for 6 weeks as he bought my Lithiums if your interested
 
Al n Val said:
my son has 2 x Leoch pure lead carbon 100ah batteries for sale at £300 the pair

i think they retail at nearly £300 each

mint condition and just a few months old but only used for 6 weeks as he bought my Lithiums if your interested
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They are to high for the available space unfortunately as lead carbon was my first thought until I saw the dimensions.
 
headlight said:
They are to high for the available space unfortunately.
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okidoki no probs

tbh I had the same batteries when I had the Comanche and they were brilliant and very fast charging as well so I can recommend them 👍

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The AGM are £300 for another 300 or so you can get a 230a lithium, seems a no brainer to me. You have lithium profiles on your set up and you have to change anyway plus you'll get over 200a usable and a battery that will last a lifetime.
 
Al n Val said:
okidoki no probs

tbh I had the same batteries when I had the Comanche and they were brilliant and very fast charging as well so I can recommend them 👍
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If I could fit lead carbons in I would alter the wiring (post orientation is opposite to what I have now) and fit them as I think they would be ideal.
 
MichaelT said:
The AGM are £300 for another 300 or so you can get a 230a lithium, seems a no brainer to me. You have lithium profiles on your set up and you have to change anyway plus you'll get over 200a usable and a battery that will last a lifetime.
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What height are the 230AH lithiums you refer to ?
 
If you plan on motorhoming for any more than 2 years - and not even in the same van - go lithium.

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MichaelT said:
245mm but remember you can put them on the side if needed.
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Unfortunately on their side I would just get away with the height but they would then be to wide for the space.
 
My batteries are in a locker under a bench seat.
Length wise there is plenty of room but I'm limited to a max of 200mm high and 180mm wide.
I really don't need lithium for my usage as the only mains voltage item I use is a 40 watt mains TV from a little 300 watt inverter.
I have no intention of using any other mains powered items.
 
MichaelT said:
The AGM are £300 for another 300 or so you can get a 230a lithium, seems a no brainer to me. You have lithium profiles on your set up and you have to change anyway plus you'll get over 200a usable and a battery that will last a lifetime.
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Plus if you got AGM's and their f_#cked up, we would all have to endure Lenny's told you so posts:LOL:.
 
headlight said:
My batteries are in a locker under a bench seat.
Length wise there is plenty of room but I'm limited to a max of 200mm high and 180mm wide.
I really don't need lithium for my usage as the only mains voltage item I use is a 40 watt mains TV from a little 300 watt inverter.
I have no intention of using any other mains powered items.
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Better to get a 22v TV then?

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No way will you convince me about AGM's the carbon ones have not been about long enough for a track record.
One couple of Funsters I know fitted a couple of expensive spiral AGM's last time I saw them I asked how the AGM's were going the answer I got "I wish we had listened to you".

If you went the Lithium route if you change vans take them with you, A 230 ah Lithium will give you over a 180 ah of power and will recharge quicker.

How old are your existing batteries if less than a couple of years just fit a 3rd.

What would be your suggestions as to what would be the best batteries for my usage Lenny and why please.
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My preference would be for Gels if not going Lithium 3x 80 ah Gels would do the job that would be £450.
 
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Lenny HB said:
No way will you convince me about AGM's the carbon ones have not been about long enough for a track record.
One couple of Funsters I know fitted a couple of expensive spiral AGM's last time I saw them I asked how the AGM's were going the answer I got "I wish we had listened to you".

If you went the Lithium route if you change vans take them with you, A 230 ah Lithium will give you over a 180 ah of power and will recharge quicker.

How old are your existing batteries if less than a couple of years just fit a 3rd.
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Lithiums all appear to high.
On their sides they are to wide.
I do not have the space for a third lead acid.
 
headlight said:
I know some members don't rate/like AGM's, such as LennyHB :ROFLMAO: but from what I've read if your charging systems have the correct charging profile for them they are ok.
Opinions wanted on my proposal as to why I should or should not do this or other battery chemistry suggestions that would be better for my usage ?
Click to expand...
I agree with Lenny and others about AGM's having had a couple of fairly big banks go crook very quickly (i.e. 18months 6*180AH Mastervolt), however I think with Solar topping them up when they are not being used regularly, and the correct charge profile when they are they should not sulphate, which I think is the normal Achilles heal of AGM batteries (even better if they have the carbon layer).

But if ease of install (biggy for me), cost and storage space are an issue then I think the Leochs are a good option, especially as you are happy to live within their capabilities and I think I would sooner go with a quality LA option than cheaper lithium......
 
headlight said:
Why ?
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You are running an Inverter off a 12v battery to power a 230v TV, inverters are generally not very efficient so why waste energy powering something that could just work off the 12v?

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MichaelT said:
You are running an Inverter off a 12v battery to power a 230v TV, inverters are generally not very efficient so why waste energy powering something that could just work off the 12v?
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My Victron smart shunt shows me that my 240v TV running from my 300 watt inverter takes 2.6amps.
I doubt I would save much electric by changing to a 12v TV.
 
Lenny HB said:
No way will you convince me about AGM's the carbon ones have not been about long enough for a track record.
One couple of Funsters I know fitted a couple of expensive spiral AGM's last time I saw them I asked how the AGM's were going the answer I got "I wish we had listened to you".

If you went the Lithium route if you change vans take them with you, A 230 ah Lithium will give you over a 180 ah of power and will recharge quicker.

How old are your existing batteries if less than a couple of years just fit a 3rd.


My preference would be for Gels if not going Lithium 3x 80 ah Gels would do the job that would be £450.
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Yeah First Carbon AGM's I came across was about 2013(ish) from Firefly a US company - initially hailed as an alternative to expensive lithium (as it was then) I saw some bad reports emerging on the US forums after a year or two, but then times have moved on a bit I guess - Had one set of Spirals needed for a very high CCA requirement (big 12v thruster 650amps, stupid install should have been 24v) Certainly wouldn't choose them for Leisure use though.

On most of the long distance boats I got involved with up until about 5 years ago large Gel banks were the domestic battery most chose (even 2v types) - lasted very well indeed but more recently every client wanted Lithium, they just do a better job.

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