Battery Master question

[Jackd]

Whilst putting in a 12v supply to my garage, I noticed the van battery was 12.5v & leisure batteries were at 13.6v.
Is this suggesting that my battery master isn’t working correctly?

 

[jumar]

13.1v Starter
12.6v Leisure

I've got a battery master fitted and working.

 

[Jackd]

13.1v Starter
12.6v Leisure

I've got a battery master fitted and working.

It was my understanding that a battery master put any excess charge to the battery that needed it. In my case, the van battery.
I noticed yours is only 0.5v difference, where as mine is 1.1v
Confusing if you’re an electrical dumb ass like me

 

[pappajohn]

I believe the battery master only kicks in if there's a "greater than" 0.5v difference.

 

[jumar]

It was my understanding that a battery master put any excess charge to the battery that needed it. In my case, the van battery.
I noticed yours is only 0.5v difference, where as mine is 1.1v
Confusing if you’re an electrical dumb ass like me

My leisure battery has just had an heavy load, it's currently recovering from it...perhaps I should post when my battery is full, its currently only 65% capacity... recharging via Solar...

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[Jackd]

I believe the battery master only kicks in if there's a "greater than" 0.5v difference.

Mines 1.1v difference which is why I’m wondering if it’s working properly

 

[autorouter]

Mines 1.1v difference which is why I’m wondering if it’s working properly

What are the LEDs showing?

 

[RogerIvy]

Either it’s not working or you have a drain (perhaps parasitic) that exceeds the trickle charge that the BM provides.

 

[Dolmen]

Victron battery master, leisure 13.5, cab 12.9

 

[Jackd]

What are the LEDs showing?

There’s no LED’s unfortunately on mine

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[funflair]

There’s no LED’s unfortunately on mine

If it's a Vanbitz battery master it should have LED's red is working green is standby I think.

 

[Jackd]

If it's a Vanbitz battery master it should have LED's red is working green is standby I think.

Not a vanbitz one unfortunately Martin

 

[eddie]

Not a vanbitz one unfortunately Martin

Ah problem solved

 

[funflair]

Not a vanbitz one unfortunately Martin

Ah OK only the Vanbitz one is called "Battery Master" hence the confusion yours will be a battery maintainer of some sort and works on a different principle, most of the battery maintainer type only start to support the starter battery when the leisure battery voltage exceeds 13.6v.

 

[eddie]

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[Jackd]

I’ll take a photo for you later. It’s called a “Battery Master”
Might be made of “Chineesium” too

 

[Jackd]

I didn’t supply nor fit it Eddie unfortunately

 

[Jackd]

eddievanbitz funflair Do I have a snide one? Have them pesky Chinese been at it again?

 

[funflair]

eddievanbitz funflair Do I have a snide one? Have them pesky Chinese been at it again?
View attachment 801355

Looks OK to me,

You can see the green light

 

[Jackd]

I think I have just discovered the problem. I think it’s wired up wrong.
The red should go to the leisure batteries & brown to engine battery.
Mine’s the other way round

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[Diabalo]

Once you have changed it you can test by turning your headlights on, the load should trigger the Battery master to charge your vehicle battery from the Hab battery and as said above the lights will change.

 

[Jackd]

I have just swapped over the wires & van voltage is gradually increasing.

Your run of the mill MoHo dealers are awesome aren’t they

It also turns out that it is a vanbitz one after all. I couldn’t see any LED’s where it was mounted. Currently glowing red

 

[eddie]

eddievanbitz funflair Do I have a snide one? Have them pesky Chinese been at it again?
View attachment 801355

I refer to my previous post

 

[funflair]

I have just swapped over the wires & van voltage is gradually increasing.

Your run of the mill MoHo dealers are awesome aren’t they

It also turns out that it is a vanbitz one after all. I couldn’t see any LED’s where it was mounted. Currently glowing red

Red is working so all looks good

 

[Just smiffy]

Probably fitted by a motorhome dealer professional….

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[JockandRita]

Probably fitted by a motorhome dealer professional….

Is there such a thing these days Garry?

Jock.

 

[VXman]

Ah OK only the Vanbitz one is called "Battery Master" hence the confusion yours will be a battery maintainer of some sort and works on a different principle, most of the battery maintainer type only start to support the starter battery when the leisure battery voltage exceeds 13.6v.

there are lots of 'Battery Masters' available, not just Vanbitz. Battery maintainers can also be mains powered - just like a charger but only delivers a trickle charge.

e.g. https://www.sunshinesolar.co.uk/Ite...2dz97Sr2wxE9nk-Ls5vpO3fbFQ5cwLT8aAmxFEALw_wcB

 

[eddie]

there are lots of 'Battery Masters' available, not just Vanbitz. Battery maintainers can also be mains powered - just like a charger but only delivers a trickle charge.

e.g. https://www.sunshinesolar.co.uk/Ite...2dz97Sr2wxE9nk-Ls5vpO3fbFQ5cwLT8aAmxFEALw_wcB

Er, that’s one of mine

They buy them from Van Bitz as do dozens of dealers

Jim MHF Is the best place to buy one though

 

[funflair]

Er, that’s one of mine

They buy them from Van Bitz as do dozens of dealers

Jim MHF Is the best place to buy one though

That’s what I always assumed

 

[Just smiffy]

I think that if you can’t fit a vanbitz battery master with the very simple instructions to a van then I don’t think you should be driving it…

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