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If you are concerned about the actual size of the battery there are quite a few 100amp hour batteries on the market which are almost the same size as the 85amp hour.

David

When we has a mover put on our last van, I rang Powertouch for advice & the man there told me to save my money & stick with the 85ah battery which was on the van. I did & we had no problem at all.

When we bought this new van we had a mover fitted by the dealer before delivery, when we collected the van I questioned why they'd fitted a 110ah battery & they said it was the only one they fitted when a van had a mover. Probably should have said because it was dearer than the 85ah they had on the shelf. The 110ah is a right pain because it only just fits in the battery box. Our van is a Pageant Provene series7.

I think the replies above answer the question very well but if you have doubts, why not call the mover people and ask them.

BB

Quote: Originally posted by millermicm on 25/3/2012

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Our 85amp didn't really do the business when we fitted a mover. Depends how much you plan to use the mover I guess For the sake of another £75 odd you will be covered for pretty much any situation.

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Quote: Originally posted by tango55 on 24/3/2012

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Firstly both batteries are powered by 12 volts so a 110ah battery is no more powerful than an 85ah battery. The difference is that the bigger battery stores more energy so the power actually lasts longer. Basically it's like having two aquariums, one that holds 2 gallons and one that holds 3. If you pour the water down the same size pipe, although the flow would be identical it would take longer to empty the bigger one. Going back the battery, I would buy an electrical tester and check the voltage of your existing battery first as fully charged it should be no less than 12.7 volts. If it is 12.6 volts it's half charged and 12.5 volts the battery is fully discharged. After checking, if it is found that the battery is not holding a charge then it may pay you to buy a 110ah battery but you would have to check the battery box first as some have a smaller access and are too small to accommodate anything bigger than an 85ah battery.

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The explanation by tango55 is a slight over simplification of the facts. One of the main reasons for a battery failing to adequately power a motor mover is that it's voltage will fall when required to deliver a large amount of current to the motors. The ability of a battery to maintain it's voltage when under load is yet another parameter of of a battery. It is true, however that larger capacity batteries also generally have better performance under load than their smaller (lower capacity ) counterparts although small capacity batteries can be selected to offer good load performance (but you need to shop around). As batteries age, their capacity and load performance degrade, also a battery in a poor state of charge will exhibit very poor load performance, so it's critical to keep the battery well charged.

 

Richard

 

Quote: Originally posted by tango55 on 24/3/2012

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Firstly both batteries are powered by 12 volts so a 110ah battery is no more powerful than an 85ah battery. The difference is that the bigger battery stores more energy so the power actually lasts longer. Basically it's like having two aquariums, one that holds 2 gallons and one that holds 3. If you pour the water down the same size pipe, although the flow would be identical it would take longer to empty the bigger one. Going back the battery, I would buy an electrical tester and check the voltage of your existing battery first as fully charged it should be no less than 12.7 volts. If it is 12.6 volts it's half charged and 12.5 volts the battery is fully discharged. After checking, if it is found that the battery is not holding a charge then it may pay you to buy a 110ah battery but you would have to check the battery box first as some have a smaller access and are too small to accommodate anything bigger than an 85ah battery.

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Quote: Originally posted by David Klyne on 24/3/2012

If you are concerned about the actual size of the battery there are quite a few 100amp hour batteries on the market which are almost the same size as the 85amp hour.

David