Inverter nightmare

[Dairyfarmer]

sounds about right, my entire lounge consumes that power and i have 2x105aH batteries , after 4hrs the batteries read 12.2v each

350w?

105x2x12 = 2520
350w = 7.2
50% DoD =3.6
85% PF = 3:03
95% PF = 3:45

So at 350w over 4 hours you are hammering your batteries a bit. But then you are probable 300w as you would, hopefully, not be running the whole time at 350w. So very close to 4 hours / 12.3v

12.6 volts = 100%
12.5 volts = 70%
12.3 volts = 50%
11.4 volts = 20%
Source: https://deepcyclebatterystore.com/how-to-maintain-batteries/

 

[Pineapple Smurf]

350w?

105x2x12 = 2520
350w = 7.2
50% DoD =3.6
85% PF = 3:03
95% PF = 3:45

So at 350w over 4 hours you are hammering your batteries a bit. But then you are probable 300w as you would, hopefully, not be running the whole time at 350w. So very close to 4 hours / 12.3v

you are right, it is normally just the Yamaha amp and the 55" tv on, that is way less than 350w, when load shedding kicks in. I have never ever let the lead acids drop below 12.2v as they are normal truck batteries, 99% of the time i switch my tv off when batteries get to around 12.6v anyways, rather watch on laptop if load shedding is >2hrs

 

[Dairyfarmer]

99% of the time i switch my tv off when batteries get to around 12.6v anyways, rather watch on laptop if load shedding is >2hrs

You have to find that balance between cycles and capital outlay. Good batteries cost a fortune but have high cycles. But can you finance them or be content with lesser batteries but replace them every few years? I went the cheaper option for 2 reasons. I couldn't afford top range batteries. And I didn't know whether I needed to add batteries at a later stage. You don't want to be mixing new and old batteries. So I figured 500 cycles would do me fine, but I'm expecting many more because I'm running about half the expected load. (ie the fridge can handle 4 or 6 hours of load shedding a day, but I need my streaming porn documentaries, light etc)

 

[Pineapple Smurf]

You have to find that balance between cycles and capital outlay. Good batteries cost a fortune but have high cycles. But can you finance them or be content with lesser batteries but replace them every few years? I went the cheaper option for 2 reasons. I couldn't afford top range batteries. And I didn't know whether I needed to add batteries at a later stage. You don't want to be mixing new and old batteries. So I figured 500 cycles would do me fine, but I'm expecting many more because I'm running about half the expected load. (ie the fridge can handle 4 or 6 hours of load shedding a day, but I need my streaming porn documentaries, light etc)

totally agree, i am very disciplined when it comes to batteries with everything, my phones never drop below 70%
people that run to 0% are bloody idiots

 

[Sinbad]

totally agree, i am very disciplined when it comes to batteries with everything, my phones never drop below 70%
people that run to 0% are bloody idiots

Lead-acid and Lithium are very different .....

 

[Dairyfarmer]

Lead-acid and Lithium are very different .....

Lithium also have a limit to the number of cycles. They can be discharged further, but remember cycles are cumulative, so discharging a battery by 25% will take 4 charges to make a cycle. Discharging to 50% and its 2 charges to make a cycle. Lithium batteries can go below 80%. So one charge is nearly a cycle.

 

[Sinbad]

Lithium also have a limit to the number of cycles. They can be discharged further, but remember cycles are cumulative, so discharging a battery by 25% will take 4 charges to make a cycle. Discharging to 50% and its 2 charges to make a cycle. Lithium batteries can go below 80%. So one charge is nearly a cycle.

Yup and modern ones are good for several thousand cycles.

 

[Pineapple Smurf]

Lead-acid and Lithium are very different .....

yes yes, just mentioned i am obsessed with no flat batteries it irks me

 

[Dairyfarmer]

yes yes, just mentioned i am obsessed with no flat batteries it irks me

Phone batteries I don't care about. As long as I get a day and a half, at least, after a year, that's fine. Life is too short to be worrying about making you cell battery last 3 days longer than it should.

Big batteries, yes. You don't want any nasty surprises when Eskom wants more money has a breakdown.

 

[Anomaly357]

Bought an Ellie's 1200w inverter which includes 2 batteries. Searched for an electrician and found one recommended by friends. He said he knows what to do. He put in an extra distribution box and related the plugs through there. First time I switched on the washing machine everything tripped and the inverter's alarm started. Anyway, to cut a long story short he had to come in and disconnect everything. He has so far charged me almost R5,500 to fix everything, so a major dispute going on.
Where do I find a reputable guy who knows inverters to install it?

Try these guys. They are master electricians and also experts in solar power. www.electricians-sa.co.za

 

[dunkyd]

Try these guys. They are master electricians and also experts in solar power. www.electricians-sa.co.za

No use. It will never run a washing machine no matter how good the guy is......

 

[The_Traveller]

Try these guys. They are master electricians and also experts in solar power. www.electricians-sa.co.za

Says who ?

 

[Steamy Tom]

Says who ?

their website, duhhh

 

[The_Traveller]

their website, duhhh

I want a reply from @Anomaly357