Urgent : Leisure Battery Question

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Sep 21, 2021
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Silverstream, Tyholland, County Monaghan, Ireland
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HI

In a bit stressed out situation but I need to replace the 2 leisure batteries I placed under the passenger chair in my transit

They were a reuse of the standard batteries under the driver seat which gor replacxed by new..... they did so far

I do not have the funds to go fully deep cycle right now

And I am getting confused withhg my Amps vs AH and C10 C20 ratings

Do I go C10 or C20

Any links to Belfast shops would be apreciated.

I am out in the iddle of nowhere buit am in Belfast this afternoon ... Any advise hugely apreciated
 
HI

In a bit stressed out situation but I need to replace the 2 leisure batteries I placed under the passenger chair in my transit

They were a reuse of the standard batteries under the driver seat which gor replacxed by new..... they did so far

I do not have the funds to go fully deep cycle right now

And I am getting confused withhg my Amps vs AH and C10 C20 ratings

Do I go C10 or C20

Any links to Belfast shops would be apreciated.

I am out in the iddle of nowhere buit am in Belfast this afternoon ... Any advise hugely apreciated
You need to look at AH rating (amp hour) and physical size. C is just the charge/discharge rate so ignore that 👍
 
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The advice given in the link below may help:

 
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HI

In a bit stressed out situation but I need to replace the 2 leisure batteries I placed under the passenger chair in my transit

They were a reuse of the standard batteries under the driver seat which gor replacxed by new..... they did so far

I do not have the funds to go fully deep cycle right now

And I am getting confused withhg my Amps vs AH and C10 C20 ratings

Do I go C10 or C20

Any links to Belfast shops would be apreciated.

I am out in the iddle of nowhere buit am in Belfast this afternoon ... Any advise hugely apreciated
I would have gone for something like this https://www.tayna.co.uk/leisure-batteries/numax/dc31mf/
As we had a 90ah numax fitted to ours from new and it lasted really well. If you're buying off the shelf you could be limited to what's available and possibly at a bit more cost than usual. You need to know what physical size battery you're looking for it's probably going to be a low profile to fit under the seat and it's going to be easier if you get one with the same terminal type and layout as your electrics are set up for.
 
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I just added a second leisure battery to my recently acquired MH, as looked like it had 2 a some point, everything there but battery, did a search for a matching battery and found Euro car parts were doing special offer of 45% off the one I needed - bargain, now fitted along with a 3000W inverter to allow a bit of off grid life, they lots of sizes but this was mine,

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If you discharge a battery quickly you will get less total capacity than if you discharge it slowly. Because of this, when stating the battery capacity it is common to state the rate that this refers to. So for example a battery might be specified as 100Ah at the C20 rate, which means it was discharged over 20 hours. A faster discharge, for example over 5 hours, would give a different capacity, so the same battery might for example be specified as 80Ah at the C5 rate.

If the rate isn't stated, it is usually the 20-hour rate (C20), that's what most people use to compare different batteries from different manufacturers.

If a battery can supply 5A for 20 hours then its capacity is 5 x 20 = 100 amp-hours (Ah).

The other figure on some batteries is the Cold Cranking Amps (CCA), which is relevant for using it as a starter battery, but not important for leisure batteries.
 
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The other figure on some batteries is the Cold Cranking Amps (CCA), which is relevant for using it as a starter battery, but not important for leisure batteries.
Also, if the battery states a CCA figure it's a starter battery in a leisure battery disguise.
A starter battery is designed for short bursts of very high amps whereas a leisure battery is designed for a long, slow discharge.
 
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Also, if the battery states a CCA figure it's a starter battery in a leisure battery disguise.
A starter battery is designed for short bursts of very high amps whereas a leisure battery is designed for a long, slow discharge.
Which sort of suggests that people with an inverter could have a better optimum design for batteries than those without
 
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