Running twin 110 spare batteries.

On Mon, 31 Mar 2008 10:41:22 +0100, "Tony Brooks"
<Tony.DeleteThis@TB-Training.co.uk> wrote:

>Darren
>
>Look on my website in the electrical notes. The split charge relay section
>should tell you all you need to know and come back if you want anything
>clarified.

Sorry Tim looks like I need it all clarified.

Van has a starter battery and an 85amp leisure battery which both
charge when the van is running, however if I flatten the leisure
battery it doesn't flatten the starter battery so I presume it has a
relay already.

I have changed my idea slightly in that I'd now like to add 2x110amp
batteries to the system so that they are also charged when running (I
think I have a 70amp alternator). This setup I presume is fine and as
it already has a mains charging circuit built in that also would be
fine?

I presume I would just extend the cable from the existing leisure
batteries to the additional 2x110?

Would it be ok in principal?

What about cable? I did hear the bigger the cable the quicker it would
charge, bit like water through a straw or a tap principle! So what
size cable for the UK?

Anything I have missed?

Thanks.
 >> Stay informed about: Running twin 110 spare batteries. 

2 x 110 amp hour batteries plus one 85 amp hour battery is just one big 305
amp hour battery as long as you connect positive to positive and negative to
negative. Try connecting positive to negative and I think it will be smoky
and expensive

Voltdrop on charging circuits is a problem so the various batteries in a
bank are usually connected by starter cable. however in this case the
distances are greater than normal in marine use. Ideally connect the
positive charging cable (the one from the relay ) the closest battery
positive (probably already is) and then take the negative cable off that
battery, extend it and connect it to the negative of the furthest battery.
Then when you make all the pos to pos & neg to neg link cable the circuit
will be complete. This ensures the voltdrop to each battery is as close to
the same as possible so all batteries get a similar charge. If you just ran
the pos & neg from the existing battery and linked to the others in turn the
one at the end of the links would never be a swell charged as the original
one.

I know starter or welding cable would cost a bit for this project, but
thicker really is better as semi-charged batteries sulphate and destroy
themselves.

Tony Brooks

www.TB-Training.co.uk
Support & training for ordinary boaters
"Darren B" <darrenb.DeleteThis@NOMAILeclipse.net> wrote in message
news:mcp3v3p1v5am44r475vmdbp9bqrphc9kjm@4ax.com...
> On Mon, 31 Mar 2008 10:41:22 +0100, "Tony Brooks"
> <Tony.DeleteThis@TB-Training.co.uk> wrote:
>
>>Darren
>>
>>Look on my website in the electrical notes. The split charge relay section
>>should tell you all you need to know and come back if you want anything
>>clarified.
>
> Sorry Tim looks like I need it all clarified.
>
> Van has a starter battery and an 85amp leisure battery which both
> charge when the van is running, however if I flatten the leisure
> battery it doesn't flatten the starter battery so I presume it has a
> relay already.
>
> I have changed my idea slightly in that I'd now like to add 2x110amp
> batteries to the system so that they are also charged when running (I
> think I have a 70amp alternator). This setup I presume is fine and as
> it already has a mains charging circuit built in that also would be
> fine?
>
> I presume I would just extend the cable from the existing leisure
> batteries to the additional 2x110?
>
> Would it be ok in principal?
>
> What about cable? I did hear the bigger the cable the quicker it would
> charge, bit like water through a straw or a tap principle! So what
> size cable for the UK?
>
> Anything I have missed?
>
> Thanks.
>
 >> Stay informed about: Running twin 110 spare batteries. 

On Tue, 1 Apr 2008 15:20:23 +0100, "Tony Brooks"
<Tony.DeleteThis@TB-Training.co.uk> wrote:

>2 x 110 amp hour batteries plus one 85 amp hour battery is just one big 305
>amp hour battery as long as you connect positive to positive and negative to
>negative. Try connecting positive to negative and I think it will be smoky
>and expensive
>
>Voltdrop on charging circuits is a problem so the various batteries in a
>bank are usually connected by starter cable. however in this case the
>distances are greater than normal in marine use. Ideally connect the
>positive charging cable (the one from the relay ) the closest battery
>positive (probably already is) and then take the negative cable off that
>battery, extend it and connect it to the negative of the furthest battery.

So you mean battery A neg to batt C neg and batt C neg to Batt D neg.
Is that right?

Batt A Pos to Batt B pos to Batt C pos?

>Then when you make all the pos to pos & neg to neg link cable the circuit
>will be complete. This ensures the voltdrop to each battery is as close to
>the same as possible so all batteries get a similar charge. If you just ran
>the pos & neg from the existing battery and linked to the others in turn the
>one at the end of the links would never be a swell charged as the original
>one.
>
>I know starter or welding cable would cost a bit for this project, but
>thicker really is better as semi-charged batteries sulphate and destroy
>themselves.
>
>Tony Brooks
>
>www.TB-Training.co.uk
>Support & training for ordinary boaters
>"Darren B" <darrenb.DeleteThis@NOMAILeclipse.net> wrote in message
>news:mcp3v3p1v5am44r475vmdbp9bqrphc9kjm@4ax.com...
>> On Mon, 31 Mar 2008 10:41:22 +0100, "Tony Brooks"
>> <Tony.DeleteThis@TB-Training.co.uk> wrote:
>>
>>>Darren
>>>
>>>Look on my website in the electrical notes. The split charge relay section
>>>should tell you all you need to know and come back if you want anything
>>>clarified.
>>
>> Sorry Tim looks like I need it all clarified.
>>
>> Van has a starter battery and an 85amp leisure battery which both
>> charge when the van is running, however if I flatten the leisure
>> battery it doesn't flatten the starter battery so I presume it has a
>> relay already.
>>
>> I have changed my idea slightly in that I'd now like to add 2x110amp
>> batteries to the system so that they are also charged when running (I
>> think I have a 70amp alternator). This setup I presume is fine and as
>> it already has a mains charging circuit built in that also would be
>> fine?
>>
>> I presume I would just extend the cable from the existing leisure
>> batteries to the additional 2x110?
>>
>> Would it be ok in principal?
>>
>> What about cable? I did hear the bigger the cable the quicker it would
>> charge, bit like water through a straw or a tap principle! So what
>> size cable for the UK?
>>
>> Anything I have missed?
>>
>> Thanks.
>>
 >> Stay informed about: Running twin 110 spare batteries. 

No.

Join all the negatives together and leave the engien negative earthed to the
vehicle as it is now.

Now ignore the engien battery - whatever letter you have decided to give it.

Now join the remaining three batteries positives together. The system will
work but may not charge all the batteries in the bank of three as well as it
could.

To make it slightly better disconnect the negative lead (not the interlink
lead) from the battery at one end of the three and reconnect it to the
battery at the other end.

If this is difficult you may find it is easier to disconnect the positive
cable and connect that to the other end of the bank. As long as the charging
leads attach at opposite ends of the bank it does not matter how you do it.

If all that is too difficult leave it at simply connecting to three domestic
battery positives and the three domestic battery negatives.

I am not carrying this on anymore untill I get a valid email address. I am
sure the group do not need to keep going over this.

Tony Brooks

www.TB-Training.co.uk
Support & training for ordinary boaters


"Darren B" <darrenb.RemoveThis@NOMAILeclipse.net> wrote in message
news:h9r6v3hslrm7jdo9pfa823kkonskrn1fqc@4ax.com...
> On Tue, 1 Apr 2008 15:20:23 +0100, "Tony Brooks"
> <Tony.RemoveThis@TB-Training.co.uk> wrote:
>
>>2 x 110 amp hour batteries plus one 85 amp hour battery is just one big
>>305
>>amp hour battery as long as you connect positive to positive and negative
>>to
>>negative. Try connecting positive to negative and I think it will be smoky
>>and expensive
>>
>>Voltdrop on charging circuits is a problem so the various batteries in a
>>bank are usually connected by starter cable. however in this case the
>>distances are greater than normal in marine use. Ideally connect the
>>positive charging cable (the one from the relay ) the closest battery
>>positive (probably already is) and then take the negative cable off that
>>battery, extend it and connect it to the negative of the furthest battery.
>
> So you mean battery A neg to batt C neg and batt C neg to Batt D neg.
> Is that right?
>
> Batt A Pos to Batt B pos to Batt C pos?
>
>>Then when you make all the pos to pos & neg to neg link cable the circuit
>>will be complete. This ensures the voltdrop to each battery is as close to
>>the same as possible so all batteries get a similar charge. If you just
>>ran
>>the pos & neg from the existing battery and linked to the others in turn
>>the
>>one at the end of the links would never be a swell charged as the original
>>one.
>>
>>I know starter or welding cable would cost a bit for this project, but
>>thicker really is better as semi-charged batteries sulphate and destroy
>>themselves.
>>
>>Tony Brooks
>>
>>www.TB-Training.co.uk
>>Support & training for ordinary boaters
>>"Darren B" <darrenb.RemoveThis@NOMAILeclipse.net> wrote in message
>>news:mcp3v3p1v5am44r475vmdbp9bqrphc9kjm@4ax.com...
>>> On Mon, 31 Mar 2008 10:41:22 +0100, "Tony Brooks"
>>> <Tony.RemoveThis@TB-Training.co.uk> wrote:
>>>
>>>>Darren
>>>>
>>>>Look on my website in the electrical notes. The split charge relay
>>>>section
>>>>should tell you all you need to know and come back if you want anything
>>>>clarified.
>>>
>>> Sorry Tim looks like I need it all clarified.
>>>
>>> Van has a starter battery and an 85amp leisure battery which both
>>> charge when the van is running, however if I flatten the leisure
>>> battery it doesn't flatten the starter battery so I presume it has a
>>> relay already.
>>>
>>> I have changed my idea slightly in that I'd now like to add 2x110amp
>>> batteries to the system so that they are also charged when running (I
>>> think I have a 70amp alternator). This setup I presume is fine and as
>>> it already has a mains charging circuit built in that also would be
>>> fine?
>>>
>>> I presume I would just extend the cable from the existing leisure
>>> batteries to the additional 2x110?
>>>
>>> Would it be ok in principal?
>>>
>>> What about cable? I did hear the bigger the cable the quicker it would
>>> charge, bit like water through a straw or a tap principle! So what
>>> size cable for the UK?
>>>
>>> Anything I have missed?
>>>
>>> Thanks.
>>>
>
 >> Stay informed about: Running twin 110 spare batteries. 

On Thu, 3 Apr 2008 21:03:12 +0100, "Tony Brooks"
<Tony RemoveThis @TB-Training.co.uk> wrote:

>I am not carrying this on anymore

Don't then. What do you want a pat on the head or something?
 >> Stay informed about: Running twin 110 spare batteries. 

"Darren B" <darrenb DeleteThis @NOMAILeclipse.net> wrote in message
news:4pfav3dc94kqp8r44m9ifaqpadl7u0bh48@4ax.com...
> On Thu, 3 Apr 2008 21:03:12 +0100, "Tony Brooks"
> <Tony DeleteThis @TB-Training.co.uk> wrote:
>
>>I am not carrying this on anymore
>
> Don't then. What do you want a pat on the head or something?

No, but when someone posting "off group" questions appears to be trying to
wind me up for trying to help him I see no point in keeping on repeating
myself.
--
Tony Brooks

www.TB-Training.co.uk
Support & training for ordinary boaters
 >> Stay informed about: Running twin 110 spare batteries. 

On Sat, 5 Apr 2008 15:53:37 +0100, "Tony Brooks"
<Tony.DeleteThis@TB-Training.co.uk> wrote:

>
>"Darren B" <darrenb.DeleteThis@NOMAILeclipse.net> wrote in message
>news:4pfav3dc94kqp8r44m9ifaqpadl7u0bh48@4ax.com...
>> On Thu, 3 Apr 2008 21:03:12 +0100, "Tony Brooks"
>> <Tony.DeleteThis@TB-Training.co.uk> wrote:
>>
>>>I am not carrying this on anymore
>>
>> Don't then. What do you want a pat on the head or something?
>
>No, but when someone posting "off group" questions appears to be trying to
>wind me up for trying to help him I see no point in keeping on repeating
>myself.

More like ur embarrassed @ giving duff advice you cock. I run four 120
batteries on my cruiser so it's bang on topic.

To Darren, forget about this nanny cock. Run the batteries straight in
line. More important is cable thickness and to add an inline fuse
after the first battery on pos and neg sides just in case. 13.5mm² is
ideal, the more strands the better, dont go for the 6 strand battery
cables as they are too stiff, bit like this guy.Forget about most of
the bullshit he's trying to sell on his duff website too. Pound for
pound just use ordinary lead acid everytime, it's not rocket science
despite what the cock tries to claim.
 >> Stay informed about: Running twin 110 spare batteries. 

On Sat, 05 Apr 2008 18:29:23 +0100, Tommy <SPAMFREI@NOSPAMMERSDOTCOM>
wrote:

>On Sat, 5 Apr 2008 15:53:37 +0100, "Tony Brooks"
><Tony.DeleteThis@TB-Training.co.uk> wrote:
>
>>
>>"Darren B" <darrenb.DeleteThis@NOMAILeclipse.net> wrote in message
>>news:4pfav3dc94kqp8r44m9ifaqpadl7u0bh48@4ax.com...
>>> On Thu, 3 Apr 2008 21:03:12 +0100, "Tony Brooks"
>>> <Tony.DeleteThis@TB-Training.co.uk> wrote:
>>>
>>>>I am not carrying this on anymore
>>>
>>> Don't then. What do you want a pat on the head or something?
>>
>>No, but when someone posting "off group" questions appears to be trying to
>>wind me up for trying to help him I see no point in keeping on repeating
>>myself.
>
>More like ur embarrassed @ giving duff advice you cock. I run four 120
>batteries on my cruiser so it's bang on topic.
>
>To Darren, forget about this nanny cock.

It obviously lives in an ivory tower of isolation.

>Run the batteries straight in
>line. More important is cable thickness and to add an inline fuse
>after the first battery on pos and neg sides just in case. 13.5mm² is
>ideal, the more strands the better, dont go for the 6 strand battery
>cables as they are too stiff, bit like this guy.Forget about most of
>the bullshit he's trying to sell on his duff website too. Pound for
>pound just use ordinary lead acid everytime, it's not rocket science
>despite what the cock tries to claim.
>

Thanks for that handy advice. I was idly thinking about splashing out
on a couple of AGm gel types but the cost is crazy.

I wonder should we earth on the chassis or run and earth back via the
neutral?
 >> Stay informed about: Running twin 110 spare batteries. 

"Darren B" <darrenb.DeleteThis@NOMAILeclipse.net> wrote in message
news:8p7e04d16piokkctehmfdoe5po5r64po83@4ax.com...
> On Sat, 05 Apr 2008 18:29:23 +0100, Tommy <SPAMFREI@NOSPAMMERSDOTCOM>
> wrote:
>
>>On Sat, 5 Apr 2008 15:53:37 +0100, "Tony Brooks"
>><Tony.DeleteThis@TB-Training.co.uk> wrote:
>>
>>>
>>>"Darren B" <darrenb.DeleteThis@NOMAILeclipse.net> wrote in message
>>>news:4pfav3dc94kqp8r44m9ifaqpadl7u0bh48@4ax.com...
>>>> On Thu, 3 Apr 2008 21:03:12 +0100, "Tony Brooks"
>>>> <Tony.DeleteThis@TB-Training.co.uk> wrote:
>>>>
>>>>>I am not carrying this on anymore
>>>>
>>>> Don't then. What do you want a pat on the head or something?
>>>
>>>No, but when someone posting "off group" questions appears to be trying
>>>to
>>>wind me up for trying to help him I see no point in keeping on repeating
>>>myself.
>>
>>More like ur embarrassed @ giving duff advice you cock. I run four 120
>>batteries on my cruiser so it's bang on topic.
>>
>>To Darren, forget about this nanny cock.
>
> It obviously lives in an ivory tower of isolation.
>
>>Run the batteries straight in
>>line. More important is cable thickness and to add an inline fuse
>>after the first battery on pos and neg sides just in case. 13.5mm² is
>>ideal, the more strands the better, dont go for the 6 strand battery
>>cables as they are too stiff, bit like this guy.Forget about most of
>>the bullshit he's trying to sell on his duff website too. Pound for
>>pound just use ordinary lead acid everytime, it's not rocket science
>>despite what the cock tries to claim.
>>
>
> Thanks for that handy advice. I was idly thinking about splashing out
> on a couple of AGm gel types but the cost is crazy.
>
> I wonder should we earth on the chassis or run and earth back via the
> neutral?

Please read http://www.canalworld.net/forums/index.php?showtopic=15206&st=0
which explains and discusses what I was trying to advise.
 >> Stay informed about: Running twin 110 spare batteries.