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Happy Jack

Battery Class A or Class B

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Time for a new battery. 

I have a motor mover which I have to use to get on and off my short but steep drive and 120 watts of Solar. I always go off grid but can charge batteries from home or from my car.

I have been offered a 95AH Category A AGM battery or 110AH category B  sealed both are Yuasa Halfords.  110AH is £20 cheaper

Any opinions on what I would be better going for?

 

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20 minutes ago, Happy Jack said:

Time for a new battery. 

I have a motor mover which I have to use to get on and off my short but steep drive and 120 watts of Solar. I always go off grid but can charge batteries from home or from my car.

I have been offered a 95AH Category A AGM battery or 110AH category B  sealed both are Yuasa Halfords.  110AH is £20 cheaper

Any opinions on what I would be better going for?

 

It will depend on whether your charging system is suitable for AGM>

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Posted (edited)

Despite going off grid, with that 120 Watts of solar system you are not needing the very deep cycling ability that was commonly the goal of off grid campers.

So possibly paying the premium for that is not cost effective?

The  AGM technology brings a somewhat lighter battery, good at taking a fast charge, but needs the right AGM charging equipment, and quite good at tolerating deep cycling. Here, I suspect its primary advantage will be deep cycling, though as hinted, you will not be asking that of it, unless, you go off in challenging weather, eg  as met  camping in the late and early season.

 

The demands of the mover are in reality a doddle, whilst the mover pulls lots of amps it does so typically for only minutes, so the drained Amp Hours is trivial  and almost any healthy battery anywhere near the capacity under discussion will eat that job. Important, though is being "healthy", the movers high current ask will find a sick one out readily, a different issue to battery capacity.

 

I would do some more research instead of tramrailing to a Halfords offering, preferring to buy batteries from  a dedicated battery specialists.

Edited by JTQ
Fighting auto editing!

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4 minutes ago, JTQ said:

Despite going off grid, with that 120 Watts of solar system you are not needing the very deep cycling ability that was commonly the goal of off grid campers.

So possibly paying the premium for that is not cost effective?

The  AGM technology brings a somewhat lighter battery, good at taking a fast charge, but needs the right AGM charging equipment, and quite good at tolerating deep cycling. Here, I suspect its primary advantage will be deep cycling, though as hinted, you will not be asking that of it, unless, you go off in challenging weather, eg  as met  camping in the late and early season.

 

The demands of the mover are in reality a doddle, whilst the mover pulls lots of amps it does so typically for only minutes, so the drained Amp Hours is trivial  and almost any healthy battery anywhere near the capacity under discussion will eat that job. Important, though is being "healthy", the movers high current ask will find a sick one out readily, a different issue to battery capacity.

 

I would do some more research instead of tramrailing to a Halfords offering, preferring to buy batteries from  a dedicated battery specialists.

 

I get a crazy discount at Halfords!

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When I was looking for a new battery, I asked the cc club for advice. Basically they advised to go for a cat B due to the mover. Apparently a cat A can not provide the current for a mover without damaging the plates in the battery 

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1 hour ago, Lost in the wilderness said:

When I was looking for a new battery, I asked the cc club for advice. Basically they advised to go for a cat B due to the mover. Apparently a cat A can not provide the current for a mover without damaging the plates in the battery 

 

NCC Verified Leisure Battery Scheme

 

• Category A is for batteries with a higher storage capacity for people who frequently use their touring caravan or motorhome away from an electrical hook-up:

• Category B batteries are aimed at those who frequently use sites with hook-up facilities, but require a greater battery capacity to operate devices such as motor movers: 

• Category C batteries are for users that require a lower capacity battery to cover basic operation of their habitation equipment for short periods away from an electrical hook-up:

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10 hours ago, ReggiePerrin said:

Apparently a cat A can not provide the current for a mover without damaging the plates in the battery 

That was poor advice.  The Class A battery is perfectly suited to use with a mover.  See the symbols for each.

 

https://www.outandaboutlive.co.uk/motorhomes/articles/practical-advice/choosing-a-ncc-verified-battery

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1 hour ago, kelper said:

That was poor advice.  The Class A battery is perfectly suited to use with a mover.  See the symbols for each.

 

https://www.outandaboutlive.co.uk/motorhomes/articles/practical-advice/choosing-a-ncc-verified-battery

You'd probably do better to point that out to the NCC, it being the author of that advice rather than I.  :)

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I did not mean to imply that you gave poor advice.  I meant whoever told you.  My apologies.

1 hour ago, ReggiePerrin said:

You'd probably do better to point that out to the NCC, it being the author of that advice rather than I.  :)

I thought it was CCC who told you?

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8 minutes ago, kelper said:

I did not mean to imply that you gave poor advice.  I meant whoever told you.  My apologies.

I thought it was CCC who told you?

No apology necessary though why you may think that it was CCC advice is quite beyond me...  the link I included in my post refers to the NCC Verified Leisure Battery Scheme and leads to this page...

https://www.thencc.org.uk/Our_Schemes/ncc_verified_leisure_battery_scheme.aspx

 

760B6E4D-8E1A-4A60-A381-21042AE97C1C.thumb.png.bab15ddc56b26f9627d53bff9c88118b.png

 

It appears that the NCC advice and labelling system may be a little at odds with each other.

 

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"When I was looking for a new battery, I asked the cc club for advice." was in your post, bit I see you were, yourself, quoting Lost In the Wilderness.  Such advice does not appear in CCC's leisure battery advice sheet.

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