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Post Info TOPIC: NEW HOUSE BATTERIES< NEED NEW CHARGER
Snippy


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NEW HOUSE BATTERIES< NEED NEW CHARGER
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Unfortuneately our failed 50 amp charger has also completed the demise of our house batteries.

The Projecta charger is also dead so need to replace.

Q.  With 3x 105 ah batteries do I need 50 amp charger or will lower amp do.

Problem is can't get anything in Mt Isa so online only.

Had to pay for batteries and now wait up to 2 weeks for them the arrive in Isa.



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Kevin Kyle

On the road full time with Son and 21 year old cat and 3 year old Manx.

Toyota Landcruiser 100 series V8.  Nextgen semi off-roader.  3 120 AH agm batteries, 1KW Solar
Peter_n_Margaret


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I presume the question refers to 240V chargers?
If you buy a decent quality 3 stage charger, it could be as big as you can afford.
Just like a 120A alternator charging a crank battery, the batteries will control the charge acceptance rate.
Cheers,
Peter

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OKA196, 4x4 'C' Class, DIY, self contained motorhome. 960W of solar, 400Ah of AGMs, 310L water, 280L fuel. https://www.oka4wd.com/forum/members-vehicles-public/569-oka196-xt-motorhome
 

 
Snippy


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Peter_n_Margaret wrote:

I presume the question refers to 240V chargers?
If you buy a decent quality 3 stage charger, it could be as big as you can afford.
Just like a 120A alternator charging a crank battery, the batteries will control the charge acceptance rate.
Cheers,
Peter

 Yup, 240 volt. Looking at Victron 30amp, Ctek or similar.

We've had problems with the Projecta and it's heat sensing since new so I don't really want another one.



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Kevin Kyle

On the road full time with Son and 21 year old cat and 3 year old Manx.

Toyota Landcruiser 100 series V8.  Nextgen semi off-roader.  3 120 AH agm batteries, 1KW Solar
Aus-Kiwi


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I am considering getting an 18-20V 30 to 50
Amp transformer and wiring through the solar regulator .

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Whenarewethere


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Same here, but a slightly different setup feeding a DC-DC 12v to 24v charger into the MPPT controller. Still thinking about it.



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Procrastination, mankind's greatest labour saving device!

50L custom fuel rack 6x20W 100/20mppt 4x26Ah gel 28L super insulated fridge TPMS 3 ARB compressors heatsink fan cooled 4L tank aftercooler Air/water OCD cleaning 4 stage car acoustic insulation.
Aus-Kiwi


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Yes more heavy duty. I THINK
the chargers on the market are not full
time or the constant A.H they SAY will not
support Duty cycle !

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Whenarewethere


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Have mounted my little Victron 10amp charger off the wall so it gets a bit more air cooling.

7200897229902218382.jpg



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Procrastination, mankind's greatest labour saving device!

50L custom fuel rack 6x20W 100/20mppt 4x26Ah gel 28L super insulated fridge TPMS 3 ARB compressors heatsink fan cooled 4L tank aftercooler Air/water OCD cleaning 4 stage car acoustic insulation.
Whenarewethere


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This is the third transformer in the back of a kitchen cupboard which is stuffed full. I've probably gone a whisker overboard with heat sinks & a Noctua 40mm fan, but it hasn't failed!

2175296253290303926.jpg



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Procrastination, mankind's greatest labour saving device!

50L custom fuel rack 6x20W 100/20mppt 4x26Ah gel 28L super insulated fridge TPMS 3 ARB compressors heatsink fan cooled 4L tank aftercooler Air/water OCD cleaning 4 stage car acoustic insulation.
Snippy


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OK, now am am the confusee!

I just need to know if I need a 50 amp charger or will lower capacity do the job.

I am looking at Victron 30amp, will this be sufficient?

Simple answers for my foggy brain cells please.

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Kevin Kyle

On the road full time with Son and 21 year old cat and 3 year old Manx.

Toyota Landcruiser 100 series V8.  Nextgen semi off-roader.  3 120 AH agm batteries, 1KW Solar
blaze


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Snippy wrote:

OK, now am am the confusee!

I just need to know if I need a 50 amp charger or will lower capacity do the job.

I am looking at Victron 30amp, will this be sufficient?

Simple answers for my foggy brain cells please.

 yes



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Snippy


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blaze wrote:
Snippy wrote:

OK, now am am the confusee!

I just need to know if I need a 50 amp charger or will lower capacity do the job.

I am looking at Victron 30amp, will this be sufficient?

Simple answers for my foggy brain cells please.

 yes

 Thank you blaze, too easy.



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Kevin Kyle

On the road full time with Son and 21 year old cat and 3 year old Manx.

Toyota Landcruiser 100 series V8.  Nextgen semi off-roader.  3 120 AH agm batteries, 1KW Solar
Whenarewethere


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I use my 10amp Victron to top up the car battery 85Ah & old car battery 80Ah used for testing things & the 4 x 26Ah gel batteries which I have use occasionally to test my solar setup & 3 ARB compressors (about 80amp draw).

When charging I have noticed that the 10amp charger doesn't run that long at full output, maybe an hour, then starts reducing amps.

It would be nice to have a 50amp charger for 300+Ah, but you probably won't gain much more over a 30 amp charger.

Don't forget that you are mostly charging from a partial discharge so at the end of the day the 30amp charger probably will only take a fairly small percentage longer.

Let's say the first hour the batteries could take more current. That's only an extra 20amps over the 3 batteries. So 6 to 7 amps per battery. The 50amp charger will soon get down to 30amp output.

So with a 30amp charger it will take about 24mintes longer to charge the batteries.

Is saving 24 minutes worth about $750 over $275. Probably not!

 

 

 



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Procrastination, mankind's greatest labour saving device!

50L custom fuel rack 6x20W 100/20mppt 4x26Ah gel 28L super insulated fridge TPMS 3 ARB compressors heatsink fan cooled 4L tank aftercooler Air/water OCD cleaning 4 stage car acoustic insulation.
iana


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I am in Mt Isa caravan park ATM, where about's are you.

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Whenarewethere


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Sydney, if you are referring to me.

 

Another thought on the 50amp charger. It could easily be that the batteries fairly soon won't take the full 50amp, so the 24 minutes probably will be closer to 15 minutes.



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Procrastination, mankind's greatest labour saving device!

50L custom fuel rack 6x20W 100/20mppt 4x26Ah gel 28L super insulated fridge TPMS 3 ARB compressors heatsink fan cooled 4L tank aftercooler Air/water OCD cleaning 4 stage car acoustic insulation.
Whenarewethere


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There is a handy shop, Allied Industrial Technologies, 26 Barkly HWY, Mt Isa. We got some O rings there. There maybe other useful items there.



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Procrastination, mankind's greatest labour saving device!

50L custom fuel rack 6x20W 100/20mppt 4x26Ah gel 28L super insulated fridge TPMS 3 ARB compressors heatsink fan cooled 4L tank aftercooler Air/water OCD cleaning 4 stage car acoustic insulation.
Snippy


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iana wrote:

I am in Mt Isa caravan park ATM, where about's are you.

Camooweel 



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Kevin Kyle

On the road full time with Son and 21 year old cat and 3 year old Manx.

Toyota Landcruiser 100 series V8.  Nextgen semi off-roader.  3 120 AH agm batteries, 1KW Solar
Whenarewethere


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Don't get caught short at the public toilet at Camooweel!

20180517095216~2.JPG

 



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Procrastination, mankind's greatest labour saving device!

50L custom fuel rack 6x20W 100/20mppt 4x26Ah gel 28L super insulated fridge TPMS 3 ARB compressors heatsink fan cooled 4L tank aftercooler Air/water OCD cleaning 4 stage car acoustic insulation.
Snippy


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Ordered the 30ah Victron and 3x Century 105ah batteries.

Now the wait for delivery.

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Kevin Kyle

On the road full time with Son and 21 year old cat and 3 year old Manx.

Toyota Landcruiser 100 series V8.  Nextgen semi off-roader.  3 120 AH agm batteries, 1KW Solar
Whenarewethere


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When you setup the Bluetooth app the default password is either 4 or 6 zeros, it's not clear in the instructions, it's not the serial number. Remember to turn BT on & the charger on when setting up & you most likely need to download the latest software for the charger. Once it's all installed it works well, just not quite the smoothest process to get it installed!

https://www.victronenergy.com/panel-systems-remote-monitoring/victronconnect



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Procrastination, mankind's greatest labour saving device!

50L custom fuel rack 6x20W 100/20mppt 4x26Ah gel 28L super insulated fridge TPMS 3 ARB compressors heatsink fan cooled 4L tank aftercooler Air/water OCD cleaning 4 stage car acoustic insulation.
Snippy


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Whenarewethere wrote:

When you setup the Bluetooth app the default password is either 4 or 6 zeros, it's not clear in the instructions, it's not the serial number. Remember to turn BT on & the charger on when setting up & you most likely need to download the latest software for the charger. Once it's all installed it works well, just not quite the smoothest process to get it installed!

https://www.victronenergy.com/panel-systems-remote-monitoring/victronconnect

 Thank you, watch this space!



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Kevin Kyle

On the road full time with Son and 21 year old cat and 3 year old Manx.

Toyota Landcruiser 100 series V8.  Nextgen semi off-roader.  3 120 AH agm batteries, 1KW Solar
iana


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Passing through tomorrow. Looks like you are all good.

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Snippy


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iana wrote:

Passing through tomorrow. Looks like you are all good.

 We are at the 2nd billabong, if you have time to say gidday. Mobile 0439 895 325



-- Edited by Snippy on Wednesday 5th of August 2020 05:39:46 AM

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Kevin Kyle

On the road full time with Son and 21 year old cat and 3 year old Manx.

Toyota Landcruiser 100 series V8.  Nextgen semi off-roader.  3 120 AH agm batteries, 1KW Solar
iana


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Looks like the turn off was left just past the bridge. We missed that turn off, and had no mob or internet. Sorry but we have to keep going, just leaving Barkly Homestead today. I used to use Projecta chargers in the service garage I worked in, I never put more than 25 amps into the batteries to charge them. Gentle charge over 24 hours. Ian

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