Another new hybrid inverter. Aims PIHY9600 660v pv input , touch screen, 15kw pv

[Solar Guppy]

The thought is if it will work with lead acid then it should work in open loop with diy lifepo4 packs

The issue with open loop LFP is the BMS is crazy expensive when you start getting to cell counts over 24.

Stacking BMS will end in blowing up if one disconnects and the load pulls the remaining string batteries to ground ( load ) or max charge voltage ( charging ) leaving a large differential potential the BMS can not handle. This is why the 12V batteries limit to maximum of 4 ins series.

I've been 3 years now into a UL9540 HV system ( Solis BYD ) and while there are strong advantages the low current provide, DYI batteries for high voltage just are not affordable since there are only a couple of options on BMS and then it is similar cost to use full UL9540 solutions, like BYD , Pylontech and the like.

 

[OffGridForGood]

Surprised no one noticed this part:

View attachment 176478

So use an EV battery pack at 380vDC? problem solved??

The thought is if it will work with lead acid then it should work in open loop with diy lifepo4 packs

but use the EV battery instead of trying to DIY a high voltage pack from cells,

The issue with open loop LFP is the BMS is crazy expensive when you start getting to cell counts over 24.

Avoid this cost using 380v EV battery pack which has it's own BMS built in?

Stacking BMS will end in blowing up if one disconnects and the load pulls the remaining string batteries to ground ( load ) or max charge voltage ( charging ) leaving a large differential potential the BMS can not handle. This is why the 12V batteries limit to maximum of 4 ins series.

No stacking needed ? Parallel identical EV packs?

 

[OffGridForGood]

whats the idle consumption?

They claim 10 Watts (I would like to see that verified)

 

[bryansifsof44]

Standby consumption same as operating consumption??? Looked through manual and didn't see any info on operating.

 

[OffGridForGood]

Standby consumption same as operating consumption??? Looked through manual and didn't see any info on operating.

97% claimed efficiency - 3% loss on 9600W is 288 Watts

 

[OffGridForGood]

This looks super similar to the Deye 8k i have, inside the wiring cabinet part.

and the Deye 8k price point is...? lower?

 

[bryansifsof44]

good catch I'm more interested in consumption under low load. I could have rephrased that better and I apologize. I am off grid and when away 95% of the time I was wondering what I would burn running Starlink and a couple of Ring cameras. Right now I am burning 100-200 watts using a SW 4024. Load is 37-140w and without heating option I average about 100-115 watts all in. 200w when heating and that is only when auto heat kicks in. I am looking for an efficient low draw system and I just received a 6000xp for its low idle consumption and will report my findings. This is just in the testing phases and I am open to other options as well.

 

[Lt.Dan]

and the Deye 8k price point is...? lower?

I was trying to insinuate the OEM for the inverter, not a direct comparison. The Deye 8k was clearly very different spec wise

 

[OffGridForGood]

good catch I'm more interested in consumption under low load. I could have rephrased that better and I apologize. I am off grid and when away 95% of the time I was wondering what I would burn running Starlink and a couple of Ring cameras. Right now I am burning 100-200 watts using a SW 4024. Load is 37-140w and without heating option I average about 100-115 watts all in. 200w when heating and that is only when auto heat kicks in. I am looking for an efficient low draw system and I just received a 6000xp for its low idle consumption and will report my findings. This is just in the testing phases and I am open to other options as well.

Seems that Victron have the low idle consumption awards, but pricy equipment to buy. Depends on your budget - low solar in Alaska half the year is a tough one to deal with any other way.

 

[bryansifsof44]

Seems that Victron have the low idle consumption awards, but pricy equipment to buy. Depends on your budget - low solar in Alaska half the year is a tough one to deal with any other way.

Here is another thought after taxes it is $0.56 per kWh. $25 usage fee a month

 

[sunsurfer]

Are there any low cost inverter suppliers that actually stand behind their product?

good point.

 

[AntronX]

So use an EV battery pack at 380vDC? problem solved??

You will need to translate EV pack BMS protocol to emulate supported battery for this inverter. Not so simple.

 

[timselectric]

You will need to translate EV pack BMS protocol to emulate supported battery for this inverter. Not so simple.

Only if you want closed loop communications.

 

[AntronX]

Only if you want closed loop communications.

Inverter may refuse to run without it. HV safety and all that stuff.

 

[timselectric]

Inverter may refuse to run without it. HV safety and all that stuff.

It says that it works with lead acid batteries.
So, it's fine.

 

[OffGridForGood]

I wish someone would try it and post how it goes...so I don't have to!
this kind of thing eats at my brain, I so want to try it out, but trying NOT to spend money...
oh the pain of it all!

 

[SeaGal]

I wish someone would try it and post how it goes...so I don't have to!

you missed the @Will Prowse bit in your posting

 

[1201]

So has anyone bought this yet?