Which battery works the hardest?

[Piers]

One of Play d'eau's banks is made up of 4 x 12v batts, wired to give 24v.

I've just heard that in a battery bank, one battery tends to work harder than the others? If so, which one?

 

[benjenbav]

One of Play d'eau's banks is made up of 4 x 12v batts, wired to give 24v.

I've just heard that in a battery bank, one battery tends to work harder than the others? If so, which one?

The self-employed one...?

 

[Momac]

Possibly the one with the best electrical connection at the terminals and therefore the least resistance.

 

[vas]

iirc Burgundyben started some years ago a thread on batteries (re a fridge or something), then various ppl chiped in together with Annageek who gave a v.good explanation on wiring and where to get the + and - on 4 or more batteries. I think Bart and MapisM were also involved.

cheers

V.

PS. I'm honestly impressed I even remember all that, hope I've not mixed them all up...

 

[MapisM]

Yup, I believe that this is the thread which you have in mind! :encouragement:

 

[burgundyben]

iirc Burgundyben started some years ago a thread on batteries (re a fridge or something), then various ppl chiped in together with Annageek who gave a v.good explanation on wiring and where to get the + and - on 4 or more batteries. I think Bart and MapisM were also involved.

cheers

V.

PS. I'm honestly impressed I even remember all that, hope I've not mixed them all up...

Yes, indeed. Where is Annageek when you need her.

Yup, I believe that this is the thread which you have in mind! :encouragement:

Right there!

 

[jrudge]

The thread is VERY detailed and a great read- but in essence electric will take the shortest route and there will hence be a bias to the first connected battery if in parallel. As you read on Anna was very specific as to how to wire them up to minimise. But number 1 will take a greater load

 

[Piers]

Thanks for all the guidance.

Benjenbav: I loved the self-empolyed comment!.

jrudge: You say 'the first connected battery'. Which first? The one on the +ve or -ve end?

Next test: I think I'll wait for the next cruise and use my point and click thermometer to see if one is warmer than the others. Makes sense?

 

[guernseyman]

Thanks for all the guidance.

Benjenbav: I loved the self-empolyed comment!.

jrudge: You say 'the first connected battery'. Which first? The one on the +ve or -ve end?

Next test: I think I'll wait for the next cruise and use my point and click thermometer to see if one is warmer than the others. Makes sense?

Conventional current flows from + to -; electrons actually flow from - to +.

 

[Piers]

Conventional current flows from + to -; electrons actually flow from - to +.

Forgive me for asking, but your point is?

 

[MapisM]

jrudge: You say 'the first connected battery'. Which first? The one on the +ve or -ve end?

Next test: I think I'll wait for the next cruise and use my point and click thermometer to see if one is warmer than the others. Makes sense?

P, fwiw Victron manual clearly states that the temperature sensor of their inverter/charger must be mounted on the minus pole.
So, I suppose that's the one which potentially reaches the higher temp.
Don't ask me why though - I just trust that someone at Victron should know...

 

[Piers]

P, fwiw Victron manual clearly states that the temperature sensor of their inverter/charger must be mounted on the minus pole.
So, I suppose that's the one which potentially reaches the higher temp.
Don't ask me why though - I just trust that someone at Victron should know...

Thanks for this. My next action is to contact Victron.

 

[jrudge]

Thanks for all the guidance.

Benjenbav: I loved the self-empolyed comment!.

jrudge: You say 'the first connected battery'. Which first? The one on the +ve or -ve end?

Next test: I think I'll wait for the next cruise and use my point and click thermometer to see if one is warmer than the others. Makes sense?

I assume both. I am going from memory as the post was very long and very detailed but length of cables and how an array of batteries was connected was critical which I would never have thought as long as you were using nice fat wires!

 

[Croftie]

http://www.smartgauge.co.uk/batt_con.html
See the difference between method 1 & 2
Obviously there are 4 batteries in the diagrams but it holds true for 2 as well

 

[Piers]

http://www.smartgauge.co.uk/batt_con.html
See the difference between method 1 & 2
Obviously there are 4 batteries in the diagrams but it holds true for 2 as well

This thread is turning a superb traing reference. Just brilliant. Thank you all.