Another lithium battery question (1 Viewer)

[Largejj]

Always better to have too much………….as the actress said to the bishop.

Richard.

I may as well fit all 4 in one go and get the cabling right from the start. Always better to have power in reserve and to choose what you want on without worrying too much about power.

 

[funflair]

I would have snapped their arm off.

Do you really need the 4th LifePo4 battery?

Good luck with the installation.

Cheers

Jock.

We had 320ah till last week when our Christmas present got fitted 480ah now, just done a week using electric at Topsham and still had 50%

 

[Largejj]

We had 320ah till last week when our Christmas present got fitted 480ah now, just done a week using electric at Topsham and still had 50%

wow 480ah - I don't feel guilty going for 400ah now

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[funflair]

wow 480ah - I don't feel guilty going for 400ah now

The standard MORELO fit is now 210ah and there is space for 4 and a few people have filled it

Never feel guilty for spoiling yourself/your MH you both deserve it.

 

[funflair]

 

[funflair]

You only need as much as you might possibly use, any more is just showing off without our extra one I might have been thinking about the gas kettle by the end of a “iffy sun” week but we were fine actually, a week in winter with grey skies will be the test.

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[funflair]

Ah but can you watch your G-shock working? Or your Submariner for that matter

 

[funflair]

I have camped in a tent, a mini, an estate car, a van, a caravan, a N+B Flair and a MORELO and to be honest there is very little difference they all provide memories.

 

[Raul]

We have 400ah, and at this capacity you can cook on electric off grid with no problems. The best bonus is, when you have plenty, you can relax the settings not to charge to full ever, and not to go into shallow discharge. That will prolong the long life of the batteries into thousands of cycles, well above 10 years life.

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[eddie]

I have 2000w of Lithium

 

[eddie]

I have 2000w of Lithium

Well I guess that we normally have about 20 100 amp Lithium batteries in stock, so.......

 

[Largejj]

Sorry this is in another thread also but by way of an update


I’ve installed 4 x 100amp lithium batteries. Really pleased with performance so far. I can really use the inverter much more for kettle and air con - before only used it for hair dryer and straighteners (not for me)

Boiling the kettle takes about 1-2 % off battery state of charge and I can run the air con (1kw) when the solar is at about 300w + for a few hours when it’s really hot and only use 10-15 %.

Next project is perhaps to see if I can get the 3 way fridge to auto switch to 12v when the solar is good and battery near full. I know it lasts for ages off gas but when the batteries are full and it’s sunny would be good to be able to use the free power for some use.

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[Raul]

Even better, change the fridge to a compressor one.

 

[paddymcc]

Next project is perhaps to see if I can get the 3 way fridge to auto switch to 12v when the solar is good and battery near full. I know it lasts for ages off gas but when the batteries are full and it’s sunny would be good to be able to use the free power for some use.

I've recently done this with my AES fridge and Votronic 350. Currently I only have 160w of solar but plan to double it. With 160w it works fine but doesn't come on that frequently but I anticipate that with 320w it will be good in summer. It's simply a question of running a wire from Votronic to fridge.

If the AES stopped working I can see the advantage of a compressor fridge with solar and lithium.

 

[JockandRita]

Next project is perhaps to see if I can get the 3 way fridge to auto switch to 12v when the solar is good and battery near full. I know it lasts for ages off gas but when the batteries are full and it’s sunny would be good to be able to use the free power for some use.

The problem with that is the 15 x minute delay (on AES models) before firing up on another power source, ie, if the sun clouds over a couple of times in an hour, you could end up with at least 30 x minutes of no power to the fridge/freezer. If that happens several times a day, and you need to keep the f/f at certain temperatures for meds, you might be struggling.
I have disconnected the AES connection from the solar controller for that very reason.

Cheers,

Jock.

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[Garry - June]

It amazes me that people get the whole power equation completely wrong.... its not the batteries themselves that is the limiting factor...its harnessing the power in the first place to put in to those batteries... all a battery whatever its design and construction is, is a store to contain electrical power until you need it... if your charging system isn't up to the task be it solar or whatever then it makes no difference what batteries you have..

 

[Largejj]

It amazes me that people get the whole power equation completely wrong.... its not the batteries themselves that is the limiting factor...its harnessing the power in the first place to put in to those batteries... all a battery whatever its design and construction is, is a store to contain electrical power until you need it... if your charging system isn't up to the task be it solar or whatever then it makes no difference what batteries you have.

 

[Largejj]

I agree with you but if you have larger storage capacity and know if you have power available in next few days then you can plan to use your storage more to save on gas etc. In my case I have 500w solar or 60 amp B2B. In fact i have found if my batteries are full the solar mppt (VictronConnect) runs warmer as it dissipates the current available from solar. So all the more reason to plan ahead arms use the free energy on whatever you want to use.

for me I don’t want to loose any flexibility so want to keep 3 way fridge so all options are open.

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[Lenny HB]

The problem with that is the 15 x minute delay (on AES models) before firing up on another power source, ie, if the sun clouds over a couple of times in an hour, you could end up with at least 30 x minutes of no power to the fridge/freezer. If that happens several times a day, and you need to keep the f/f at certain temperatures for meds, you might be struggling.
I have disconnected the AES connection from the solar controller for that very reason.

Cheers,

Jock.

It doesn't work like that only does that when switched via the D+ terminal, the solar reg connects to the S+ terminal.

 

[Lenny HB]

I've recently done this with my AES fridge and Votronic 350. Currently I only have 160w of solar but plan to double it. With 160w it works fine but doesn't come on that frequently but I anticipate that with 320w it will be good in summer. It's simply a question of running a wire from Votronic to fridge.

It works in 30 minute blocks so as not to flatten the batteries, a problem I found is due to the dumb firmware on the fridge which has solar as the prime source, if you are on EHU the Votronic will be giving an AES signal output once the batteries are charged and the fridge often switches to 12v. I've fitted a mains relay that disconnects the AES signal when on EHU.

 

[JockandRita]

The problem with that is the 15 x minute delay (on AES models) before firing up on another power source, ie, if the sun clouds over a couple of times in an hour, you could end up with at least 30 x minutes of no power to the fridge/freezer. If that happens several times a day, and you need to keep the f/f at certain temperatures for meds, you might be struggling.
I have disconnected the AES connection from the solar controller for that very reason.

Cheers,

Jock.

It doesn't work like that only does that when switched via the D+ terminal, the solar reg connects to the S+ terminal.

Whilst I to your greater knowledge on the subject Lenny, that was our experience on the Dometic RM7605 F/F, so we disconnected it. On the auto setting, it now changes over to gas when EHU voltage is low, or to 12v when the engine is running, or from gas to EHU when plugging in.

Cheers,

Jock.

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[Lenny HB]

Whilst I to your greater knowledge on the subject Lenny, that was our experience on the Dometic RM7605 F/F, so we disconnected it. On the auto setting, it now changes over to gas when EHU voltage is low, or to 12v when the engine is running, or from gas to EHU when plugging in.

Cheers,

Jock.

That is because your fridge doesn't have an S+ connection & Martin wired it to the D+ using a diode to isolate it from the alternator D+.

 

[JockandRita]

That is because your fridge doesn't have an S+ connection & Martin wired it to the D+ using a diode to isolate it from the alternator D+.

Ah yes, thanks for reminding me Lenny. I knew there was a valid reason for disconnecting it.

Cheers,

Jock.