85 v 110v

[rfrancis]

Can anyone tell me the what this means, is it 1 amp drain for 110 hours? I have to replace my battery, it has only lasted two years(10 trips) will an 85 be sufficient. Any comments would be welcome.

 

[WatsonJohnG]

Its 85 amps not volts and put simply that is the power output of the battery

An 85 amp hour battery will in theory run 1 amp load for 85 hours and 110 amp hour battery for 110 hours

This means in practice that the 110 will last longer without charging for the same load

The CC do a table of loads taken by equipment which I will attempt to find and post below

 

[WatsonJohnG]

CC website is down but C & CC have this excellent factshett

http://www.campingandcaravanningclub.co.uk/Documents/Looking after your leisure battery.pdf

 

[xtrailman]

ron

Battery outputs are rated in ampere hours.

A 110 a/h will provide 1 amp for 110 hours, but only if fully charged.

It follows that if you use 10amps then the battery will last 11 hours if fully charged.

If you have a motor mover, and the battery compartment can hold one. Then the 110A/H version is the better choice.

 

[JTQ]

Picking up on your comment that your battery only lasted two years.

To protect yourself from a repeat of this it might be timely to consider, "why".

Unless it was a real budget one then that life is indicating a high probability something in its use is wrong.

The biggest killer's of batteries is low levels of discharge coupled with failure to quickly recharge.

Clearly we cant use our batteries as in a car; very minor levels of discharge followed by immediate recharging. But to get a reasonable life, predictably about 8 years from a mid priced unit, it would be prudent not to deplete below half and recharge at the earliest opportunity.

 

[rfrancis]

Its 85 amps not volts and put simply that is the power output of the battery

An 85 amp hour battery will in theory run 1 amp load for 85 hours and 110 amp hour battery for 110 hours

This means in practice that the 110 will last longer without charging for the same load

The CC do a table of loads taken by equipment which I will attempt to find and post below

thanks for the advice I'll check with the CC

ron

 

[rfrancis]

ron

Battery outputs are rated in ampere hours.

A 110 a/h will provide 1 amp for 110 hours, but only if fully charged.

It follows that if you use 10amps then the battery will last 11 hours if fully charged.

If you have a motor mover, and the battery compartment can hold one. Then the 110A/H version is the better choice.

many thanks ray particularly the motor mover

ron

 

[rfrancis]

Picking up on your comment that your battery only lasted two years.

To protect yourself from a repeat of this it might be timely to consider, "why".

Unless it was a real budget one then that life is indicating a high probability something in its use is wrong.

The biggest killer's of batteries is low levels of discharge coupled with failure to quickly recharge.

Clearly we cant use our batteries as in a car; very minor levels of discharge followed by immediate recharging. But to get a reasonable life, predictably about 8 years from a mid priced unit, it would be prudent not to deplete below half and recharge at the earliest opportunity.

JTQ, thanks, I am reviewing how we operate the electrics when on site, the handbook tells me that when I require the 12 volt circuit on I have to have the charger in the on position, can I overcharge?

ron