Solar use recharging cycle. (12 Viewers)

[acenip]

I had a lot of help from the Fun community recently with the setting up of my solar and lithium. I thought I'd start a new chat regarding the use of the various things and recharging. Currently we're enjoying a decent bit of sunshine so that's been useful working things out.

My shunt reading this morning was 74% as shown. From what I've read bringing the ah back to zero is goal. Is this correct? Are there any other stats from this screenshot I need to consider?

 

[bigtwin]

From what I've read bringing the ah back to zero is goal.

It is.

Are there any other stats from this screenshot I need to consider?

Charge current to zero, and SoC % to 100%.

All things being equal, they amount to, more or less, the same thing.

Ian

 

[acenip]

So if there's no alternative power source to charge, hookup, or alternator because we're not driving and the overall charge is dropping each day, what percentage would you expect our appliances to fail to work?

 

[LostInSpace]

So if there's no alternative power source to charge, hookup, or alternator because we're not driving and the overall charge is dropping each day, what percentage would you expect our appliances to fail to work?

One of the advantages of LiFePO4 lithium batteries is that the voltage stays very constant as the batteies discharge.

All of the appliances on our Sterling Power batteries continue to work right down to the point at which the BMS switches off the batteries to protect them.

Not recommended to do that too often !!

 

[acenip]

We actually have a 200ah LiFePO4 battery, so good to know we can take it that far. As it's a new installation it's going to take a bit of time to figure it out. The good thing is all the gas stuff is still here if we go to far.

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[ChrisL]

You may find if you allow your battery to get that low that the BMS turns it off that you may have difficulty recharging it again, personally I'd be finding some method of charging it when it gets down to around 15%, go for a drive or get on hookup.

 

[acenip]

Good to know. It's all about finding my limits ATM.

 

[acenip]

Just returned from a 5 day trip with the new lithium/solar system. My first mistake was allowing our 3 way fridge to run about 7 hours the first day, won't be doing that again. Regardless, overall it was a very good experience. We used our microwave, small airfryer, toaster, travel kettle and espresso coffee machine for 5 days. Each day we lost slightly more than we could recoup, partly due to a couple of rather cloudy days. Our 200ah lithium fell to 35% on our final day. So our usage would need to change if we don't see better solar conditions. Unfortunately we don't have a B2B, probably won't be able to have one fitted without changing our original alternator.

A few more outings would help us figure things out better.

 

[jumar]

Just returned from a 5 day trip with the new lithium/solar system. My first mistake was allowing our 3 way fridge to run about 7 hours the first day, won't be doing that again. Regardless, overall it was a very good experience. We used our microwave, small airfryer, toaster, travel kettle and espresso coffee machine for 5 days. Each day we lost slightly more than we could recoup, partly due to a couple of rather cloudy days. Our 200ah lithium fell to 35% on our final day. So our usage would need to change if we don't see better solar conditions. Unfortunately we don't have a B2B, probably won't be able to have one fitted without changing our original alternator.

A few more outings would help us figure things out better.

Can you explain a little more about not being able to have a B2B fitted with your current alternator? You may have opened up a positive reply or two....

 

[headlight]

Unfortunately we don't have a B2B, probably won't be able to have one fitted without changing our original alternator.

A few more outings would help us figure things out better.

Why is that ?

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