Agm or lead acid (1 Viewer)

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Apr 21, 2021
18
19
Funster No
80,585
MH
Dethleff
Time for new batteries. Looked at lithium but too expensive so do I go for agm or the original lead acid. Advice appreciated
 
Feb 16, 2020
2,635
3,648
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
How do you use you're van? Significant of grid will be easier with Lithium.
If you're on EHU generally, AGM will work fine, but need more care not to drain them off to deeply.
50/50 mix, you may consider GEL, but the van needs to support GEL charging profile, which from you're Avatar it looks likely to be an Electroblok, so probably will. Other's will be along to add more detailed advice.
Mike.
 
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Aug 19, 2013
3,112
4,581
Wells, Somerset
Funster No
27,611
MH
Elddis 115
Exp
since 2004
Mike's got an AGM. Too new to make any comment, but it's been parked outside for 6 months without moving, seems Ok, fed only by a 100watt solar. Did have the frost setting on the heating some of the time, plus very occasional mains when it got too cold, but that doesn't charge the LB.
 
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Stealaway

Free Member
Jan 8, 2013
8,496
11,547
Dronfield - Derbyshire
Funster No
24,202
MH
Burstner Lyseo 690G
Exp
Happy FLT since 2011
Lead acid - plain and simply and cheap - ish.
But only buy quality and a factory name that needs to protect their reputation.

Do you need them for off grid or on sites?

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Feb 16, 2020
2,635
3,648
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
Mike's got an AGM . Too new to make any comment, but it's been parked outside for 6 months without moving, seems Ok, fed only by a 100watt solar. Did have the frost setting on the heating some of the time, plus very occasional mains when it got too cold, but that doesn't charge the LB.
How did you know?, :giggle:
Mike
 
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OP
OP
Kerrone
Apr 21, 2021
18
19
Funster No
80,585
MH
Dethleff
Lead acid - plain and simply and cheap - ish.
But only buy quality and a factory name that needs to protect their reputation.

Do you need them for off grid or on sites?
A mixture of both really, but going forward I can see these sites charging separately for electric so would be nice to be self sufficient? Looking into lithium but way too expensive
 
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Oct 29, 2016
4,683
57,869
Surrey
Funster No
45,842
MH
Carthago C Tourer
Exp
Motor Homing 5 years, caravan previously
our German Van came with Exide Gels, lower amp hour (80) , but then you can take them down to 80% rather than just 50% like lead acids. If looked after they last many years longer than AGM's, ours are 6 years old and still doing fine.🤞I have heard the same from other German van owners, so for me it would either have to be Gels again, or these days Lithium, with the correct mains charger, so many more life charge cycles, plus a very long warranty. They are coming down in price all the time, plus keep your eye open for 15% discounts such as Fogstar had recently.
LES
 
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Feb 9, 2008
8,968
18,777
Corby, Northants
Funster No
1,455
MH
Coach Built
Exp
Since 2007
These appear to be the dogs Bo**ocks. Pure Lead Carbon AGM batteries from Leoch. Charged on a standard Lead Acid battery profile. Thousands of cycles and can be charged from full discharge to 90% in 90 minutes. Ignore old timers who slag off AGM as this is recent technology that prevents sulphating.
 
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Lenny HB

LIFE MEMBER
Oct 18, 2007
56,015
163,779
On the coast in West Sussex
Funster No
658
MH
Carthago Compactline
Exp
Since 2008 & many years tugging
If you are planning keeping the van a few years Gels would be well worth the investment providing your charger has the correct profile.
I take it you have an Elektroblock so depending in age it will have setting for LA & Gel or Gel & AGM.
I would give AGM house room rubbish for use as a leisure battery.
 
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Aug 19, 2013
3,112
4,581
Wells, Somerset
Funster No
27,611
MH
Elddis 115
Exp
since 2004
I was quite happy coz the last van's LB was the same make but lead acid. The two previous LBs had been Platinum, they each died at 3 years, so replaced them with Yasa standard. Unfortunately the van was quickly stolen, so I never got to see the results.
 
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Aug 19, 2013
3,112
4,581
Wells, Somerset
Funster No
27,611
MH
Elddis 115
Exp
since 2004
If you are planning keeping the van a few years Gels would be well worth the investment providing your charger has the correct profile.
I take it you have an Elektroblock so depending in age it will have setting for LA & Gel or Gel & AGM.
I would give AGM house room rubbish for use as a leisure battery.
Somebody said you might say that 😏. Yuasa should beat Platinum anyway. Besides, the van came with them. We'll see!

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Apr 20, 2012
438
477
derbyshire
Funster No
20,653
MH
Camper van
Exp
1year 10 times
These appear to be the dogs Bo**ocks. Pure Lead Carbon AGM batteries from Leoch. Charged on a standard Lead Acid battery profile. Thousands of cycles and can be charged from full discharge to 90% in 90 minutes. Ignore old timers who slag off AGM as this is recent technology that prevents sulphating.

Anyone got these doesn’t say leisure use?
 
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Feb 18, 2022
607
758
Bedfordshire, UK
Funster No
86,954
MH
RT Pergaso 740
Time for new batteries. Looked at lithium but too expensive so do I go for agm or the original lead acid. Advice appreciated
Deep Cycle Lead Acid is the way to go, if your not going for Lithium, they have had problems with AGM at such a degree, Manufactures are phasing them out, GEL only last half the life of Deep Cycle Lead Acid, and both AGM & GEL are expensive, You get Deep Cycle Lead Acid very cheap, only draw back is weight, they are heavy, has the plates are twice as thick, just make sure they are Deep Cycle, as there are a lot sellers claiming they are Deep Cycle when they are not.

Done quick search, £98.99 delivered to your door from this site: https://solarforboats.co.uk/product/dc12-120dt-sml/ You find them cheaper else where, even if they last five years, still cheap for that, good luck

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Apr 26, 2015
3,288
7,960
Ottershaw
Funster No
36,067
MH
Hymer S820
Exp
First motorhome May 2021
Upvote 0
Feb 18, 2022
607
758
Bedfordshire, UK
Funster No
86,954
MH
RT Pergaso 740
These appear to be the dogs Bo**ocks. Pure Lead Carbon AGM batteries from Leoch. Charged on a standard Lead Acid battery profile. Thousands of cycles and can be charged from full discharge to 90% in 90 minutes. Ignore old timers who slag off AGM as this is recent technology that prevents sulphating.

Are you kidding? Do you know the price and the weight of those things?
 
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Feb 14, 2021
4,166
9,421
Milton Keynes, UK
Funster No
79,219
MH
Burstner Lyseo 727G
Exp
3 years 30,000 miles UK and Europe.. Campsites and off Grid.
My motorhome has AGM's. That's what they tend to come with nowadays but....

My 2010 Renault Mégane is still on it's original battery. It has gone flat many times. It was left unused for 3 years. But still it works well. Its currently parked up at an airport carpark for 11 days but I have confidence it will start when I get back.

So, a lot to be said for old fashioned lead acid.

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Feb 9, 2008
8,968
18,777
Corby, Northants
Funster No
1,455
MH
Coach Built
Exp
Since 2007
Deep Cycle Lead Acid is the way to go, if your not going for Lithium, they have had problems with AGM at such a degree, Manufactures are phasing them out, GEL only last half the life of Deep Cycle Lead Acid, and both AGM & GEL are expensive, You get Deep Cycle Lead Acid very cheap, only draw back is weight, they are heavy, has the plates are twice as thick, just make sure they are Deep Cycle, as there are a lot sellers claiming they are Deep Cycle when they are not.

Done quick search, £98.99 delivered to your door from this site: https://solarforboats.co.uk/product/dc12-120dt-sml/ You find them cheaper else where, even if they last five years, still cheap for that, good luck
Absolute crap ! 23.5 kg and no information on number of cycles and DOD. This explains why they are only £98.0.
 
Upvote 1
Jan 23, 2023
228
225
Bedford, UK
Funster No
93,573
MH
Burstner Travel Van
Exp
Newbie - bought first MH 11/03/2023
I'll take the opportunity to ask my own question on this thread.

Ref: Interim electrical power upgrade - on new to me 1st MH

Vehicle has one Halfords HLB681 115Ah leisure battery - Halfords rate it as Class C - "use with EHU with minimal off grid usage"

My original thought was to add one or two similar lead acid batteries (new or s/h) to give me enough power to travel entirely off grid - while I gain experience/knowledge to decide whether I need to invest in powerful Lithium tech.

However - it seems I should only consider Class A rated lead batteries - "for frequent off grid usage without EHU"

On that basis - should I regard the existing battery as not useful & scrap it?

(NB: Vehicle has no solar or B2B charging and no inverter)
_________________________

There's a whole raft of sub questions of course regarding - Solar panels - B2B charger - Inverter.

The main one being - If I fit these items can I "Dual Spec" them to work now with lead batteries - but be sure they would be fine to work with big, expensive lithium batteries at a later date?
 
Upvote 0
Feb 18, 2022
607
758
Bedfordshire, UK
Funster No
86,954
MH
RT Pergaso 740
Absolute crap ! 23.5 kg and no information on number of cycles and DOD. This explains why they are only £98.0.
Just normal car batteries weigh in at around 20kgs or more for just 98ah, The thing is they are not crap, the series 200 have proven to last more then 5 years on boats, even if they last five years, still cheap for that, compared to what you suggested, the price two & a half times more and weigh a third more again.
My the two batteries are doing just fine, I'm very happy to buy another two when these are knackered if I don't have Lithium by then, Happy Days
 
Upvote 0
Feb 18, 2022
607
758
Bedfordshire, UK
Funster No
86,954
MH
RT Pergaso 740
I'll take the opportunity to ask my own question on this thread.

Ref: Interim electrical power upgrade - on new to me 1st MH

Vehicle has one Halfords HLB681 115Ah leisure battery - Halfords rate it as Class C - "use with EHU with minimal off grid usage"

My original thought was to add one or two similar lead acid batteries (new or s/h) to give me enough power to travel entirely off grid - while I gain experience/knowledge to decide whether I need to invest in powerful Lithium tech.

However - it seems I should only consider Class A rated lead batteries - "for frequent off grid usage without EHU"

On that basis - should I regard the existing battery as not useful & scrap it?

(NB: Vehicle has no solar or B2B charging and no inverter)
_________________________

There's a whole raft of sub questions of course regarding - Solar panels - B2B charger - Inverter.

The main one being - If I fit these items can I "Dual Spec" them to work now with lead batteries - but be sure they would be fine to work with big, expensive lithium batteries at a later date?
It would be the B2B charge Controller which would be important, get a all in one with Lithium profile, cant go wrong if it handle 50 amps output.
 
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