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Who likes Electrical Gremlins?
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64 eve lLF280k version3 cells in 8P8S configuation 24-volt build December 28th, 2023
- Thread starter michael d
- Start date
michael d
off-grid solar pilgrim
64 cells 280Ah version 3 cells:
yesterday >>> April 8th, 2024 rain and cold outside,
found some tinned copper cable lugs but still need one other size so I am waiting for the Amazon order to come tomorrow the 10th of April...
hooking up the 250 Amp NH fuse and mounting them in preparation for other larger inverters,
the NEEY smart active balancer had a 2mV to 3mV cell difference yesterday, so I turned it off...
in the off state, the NEEY smart active balancer still draws a little current but the current is coming from an inverter on another LiFePO4 system within the insulated solar power shed.
did some more organizing in between other chores and rain showers....
"April showers bring May flowers"
hoping for sun today and no wind....
maybe have to set up a little wind turbine to harness the wind....
always wanted to try to harness the water from the artesian well but it keeps the pond water level and wildlife content... and is a continual source of fresh water for the livestock....it never freezes...
more later,,,, April 9th 2024
yesterday >>> April 8th, 2024 rain and cold outside,
found some tinned copper cable lugs but still need one other size so I am waiting for the Amazon order to come tomorrow the 10th of April...
hooking up the 250 Amp NH fuse and mounting them in preparation for other larger inverters,
the NEEY smart active balancer had a 2mV to 3mV cell difference yesterday, so I turned it off...
in the off state, the NEEY smart active balancer still draws a little current but the current is coming from an inverter on another LiFePO4 system within the insulated solar power shed.
did some more organizing in between other chores and rain showers....
"April showers bring May flowers"
hoping for sun today and no wind....
maybe have to set up a little wind turbine to harness the wind....
always wanted to try to harness the water from the artesian well but it keeps the pond water level and wildlife content... and is a continual source of fresh water for the livestock....it never freezes...
more later,,,, April 9th 2024
michael d
off-grid solar pilgrim
64 cells 280Ah version 3 cells:
Currently using the new 64-cell battery and I charged it to 27.2 volts and the NEEY balanced it....
it settled down and 3mv cell difference so using some of the electricity with a 4-foot LED light on the 3200-watt inverter until the lugs arrive...
I will charge more later but it is essentially full for the moment and need to use some of the 57000 plus watts... stored in the 64 280 amp EVE version 3 cells...
280 x 3.2 x 64 = 57344 watts...
I will not run it down to 20 percent and I will not run it up to 3.65 volts per cell ( that just stresses the cells for essentially no added capacity...)
but it may be good to set up the NEEY for periodic use to bring the cells up to 3.40 volts per cell...
Honey do things again today and I am still waiting on Amazon to deliver the lugs....normally they arrive when they say but one day late.... still fast regardless...
more baby lambs arriving....and the grass is beginning to grow a little after the rains and it was 70 degrees Fahrenheit yesterday... a beautiful day yesterday...
have a great day all...
more later...
Currently using the new 64-cell battery and I charged it to 27.2 volts and the NEEY balanced it....
it settled down and 3mv cell difference so using some of the electricity with a 4-foot LED light on the 3200-watt inverter until the lugs arrive...
I will charge more later but it is essentially full for the moment and need to use some of the 57000 plus watts... stored in the 64 280 amp EVE version 3 cells...
280 x 3.2 x 64 = 57344 watts...
I will not run it down to 20 percent and I will not run it up to 3.65 volts per cell ( that just stresses the cells for essentially no added capacity...)
but it may be good to set up the NEEY for periodic use to bring the cells up to 3.40 volts per cell...
Honey do things again today and I am still waiting on Amazon to deliver the lugs....normally they arrive when they say but one day late.... still fast regardless...
more baby lambs arriving....and the grass is beginning to grow a little after the rains and it was 70 degrees Fahrenheit yesterday... a beautiful day yesterday...
have a great day all...
more later...
michael d
off-grid solar pilgrim
then I will hook up the 6000-watt inverter or the 15k inverter when I get a few more connections completed and the cables routed better for the larger inverters...etc
michael d
off-grid solar pilgrim
64 cells 280Ah version 3 cells: 8P8S configuration 24-volts
April 14th, 2024 update:
The 3rd LED light on the NEEY 15amp active balancer was yellow and was flashing until it was finished balancing and stopped with a 3 mV cell differential..
I turned the NEEY 15 amp balancer off in the app on my Android cellular but it does still have a small draw from the battery 24/7... (LED indicator lites)
I may disconnect it (The NEEY 15Amp smart active balancer) or put a switch in the wire....>>>>>actually it is plugged in via a standard 120-volt plug to a power strip so I could just turn the power strip switch off...so it already is plugged into a switch....!!!!
I ordered an extra wiring harness and breakout board for the NEEY 15Amp smart active balancer....so I can move it around from battery to battery in the future...
Presently, running a 106-watt load on the 3200-watt HF inverter 24 /7.
I also plugged in a 500-watt 80-volt battery charger for the electric lawn mower and charged up the 80-volt battery for it and an 80-volt battery for the electric chainsaw...
Those 80-volt battery chargers for the chain saw and lawn mower always throw a spark when connecting so one advantage of the 3200-watt inverter is it has a built-in soft start with a 15-foot remote cable that if all is plugged in before then turn on the inverter there is no spark....
These 80-volt cordless tool chargers shut off when the cordless tool battery is fully charged but likely a small ghost load as the green LED indicator lite is still on....
The tinned copper lugs arrived but I did not have time yet to make more cables for the other inverters....
I tried a 120-volt induction cooktop with an 1800-watt draw on high power using a cast iron pan and made some sausages >>> wow was it fast!!
The average use is unknown for the future...
The 8P8S 24-volt 64-cell battery using 64 of the Eve 280 Ah version 3 cells has more connections I still need to assemble but is functioning as designed...
I am working to cycle it some during the day but leave the inverter connected 24/7 with a 106-watt load powering lights 24/7...
have a great Sunday all...
It was a sunny 87 degrees Fahrenheit yesterday....It may be hotter in the next couple days...
I think it is 48 degrees Fahrenheit this morning though...
April 14th, 2024 update:
The 3rd LED light on the NEEY 15amp active balancer was yellow and was flashing until it was finished balancing and stopped with a 3 mV cell differential..
I turned the NEEY 15 amp balancer off in the app on my Android cellular but it does still have a small draw from the battery 24/7... (LED indicator lites)
I may disconnect it (The NEEY 15Amp smart active balancer) or put a switch in the wire....>>>>>actually it is plugged in via a standard 120-volt plug to a power strip so I could just turn the power strip switch off...so it already is plugged into a switch....!!!!
I ordered an extra wiring harness and breakout board for the NEEY 15Amp smart active balancer....so I can move it around from battery to battery in the future...
Presently, running a 106-watt load on the 3200-watt HF inverter 24 /7.
I also plugged in a 500-watt 80-volt battery charger for the electric lawn mower and charged up the 80-volt battery for it and an 80-volt battery for the electric chainsaw...
Those 80-volt battery chargers for the chain saw and lawn mower always throw a spark when connecting so one advantage of the 3200-watt inverter is it has a built-in soft start with a 15-foot remote cable that if all is plugged in before then turn on the inverter there is no spark....
These 80-volt cordless tool chargers shut off when the cordless tool battery is fully charged but likely a small ghost load as the green LED indicator lite is still on....
The tinned copper lugs arrived but I did not have time yet to make more cables for the other inverters....
I tried a 120-volt induction cooktop with an 1800-watt draw on high power using a cast iron pan and made some sausages >>> wow was it fast!!
The average use is unknown for the future...
The 8P8S 24-volt 64-cell battery using 64 of the Eve 280 Ah version 3 cells has more connections I still need to assemble but is functioning as designed...
I am working to cycle it some during the day but leave the inverter connected 24/7 with a 106-watt load powering lights 24/7...
have a great Sunday all...
It was a sunny 87 degrees Fahrenheit yesterday....It may be hotter in the next couple days...
I think it is 48 degrees Fahrenheit this morning though...
michael d
off-grid solar pilgrim
64 cells 280Ah version 3 cells: 8P8S configuration 24-volts
Evidently, the Electrodacus SBMS0 can charge up to a maximum of 750 amps if you have enough solar panels connected via the Electrodacus DSSR50's
There is some limitation that only allows 750 amps.... ( a chip in the SBMS0)
of course that is a lot of Amps
but on a 2240 Ah battery that would be a 0.3348 C-rate
as each DSSR50 has a 50 amp suggested use that would be 15 of the DSSR50's controlling approximately 60 solar PV panels.. the DSSR50 is designed for up to 60 amps so there were some design decisions to make them last longer...so up to 50 amps is recommended per DSSR50...
Each DSSR50 would have a 6 AWG wire although 8 AWG would be sufficient in my case... but I bought 6 AWG wire and ferrules anyway for not much more...
the 0.25-inch by 4-inch by 24-inch tinned copper busbar can easily accommodate the 15 Electrodacus DSSR50's... IMO
I also bought 15 of 63 Amp breakers for these.... the breaker is to protect the wire.... 6 AWG copper cables.... for the Electrodacus DSSR50 connections....
April 16th, 2024 >>>>>lightening and thunder and lots of rain,,,, no place out there for me!!!
It is time to go outside between the heavy showers...(((try to avoid the rain,, but lightening even more so)))
more later,
Evidently, the Electrodacus SBMS0 can charge up to a maximum of 750 amps if you have enough solar panels connected via the Electrodacus DSSR50's
There is some limitation that only allows 750 amps.... ( a chip in the SBMS0)
of course that is a lot of Amps
but on a 2240 Ah battery that would be a 0.3348 C-rate
as each DSSR50 has a 50 amp suggested use that would be 15 of the DSSR50's controlling approximately 60 solar PV panels.. the DSSR50 is designed for up to 60 amps so there were some design decisions to make them last longer...so up to 50 amps is recommended per DSSR50...
Each DSSR50 would have a 6 AWG wire although 8 AWG would be sufficient in my case... but I bought 6 AWG wire and ferrules anyway for not much more...
the 0.25-inch by 4-inch by 24-inch tinned copper busbar can easily accommodate the 15 Electrodacus DSSR50's... IMO
I also bought 15 of 63 Amp breakers for these.... the breaker is to protect the wire.... 6 AWG copper cables.... for the Electrodacus DSSR50 connections....
April 16th, 2024 >>>>>lightening and thunder and lots of rain,,,, no place out there for me!!!
It is time to go outside between the heavy showers...(((try to avoid the rain,, but lightening even more so)))
more later,
michael d
off-grid solar pilgrim
64 cells 280Ah version 3 cells: 8P8S configuration 24-volts
3.84kWh energy "power queen" on sale for $712 plus tax with 200 amp BMS can be up to 4p4s so up to 16 can be combined...
$712 x 16 = $11392... (at least)
3.84kwh x16 = 61.44kwh
eg4 on sale 5.12kWh for $1149
Parallel up to 16 Batteries Get the most power possible! Up to 81.9 kWh while maintaining BMS communications.
example 12 will cost $1149 x 12 = $13788.... (at least) no rack etc...
5.12kWh x 12 = 61.44kWh
vs 64 of 280Ah eve version 3 cells with a delivered price of 6600 dollars via Alibaba warehouse in the USA, one SBMS0 for the BMS, and a bunch of time and cables for likely another 600 dollars or so....(likely a few more expenses to be added into the final cost)
3.2V x 280Ah x 64 version 3 EVE cells = 57.344kWh
the difference I see is you are not limited to an expensive inverter choice or an expensive incompatible mppt solar charge controllers, and some will limit the discharge on the pre-built units so can also be a stumbling block some folks do not factor into their builds...
just thinking on the keyboard????
the NEEY 15 amp smart active balancer is an addition for about 320 dollars or so (mas o menos)...
apple and oranges >>> oh no
time to go .....
ymmv
3.84kWh energy "power queen" on sale for $712 plus tax with 200 amp BMS can be up to 4p4s so up to 16 can be combined...
$712 x 16 = $11392... (at least)
3.84kwh x16 = 61.44kwh
eg4 on sale 5.12kWh for $1149
Parallel up to 16 Batteries Get the most power possible! Up to 81.9 kWh while maintaining BMS communications.
example 12 will cost $1149 x 12 = $13788.... (at least) no rack etc...
5.12kWh x 12 = 61.44kWh
vs 64 of 280Ah eve version 3 cells with a delivered price of 6600 dollars via Alibaba warehouse in the USA, one SBMS0 for the BMS, and a bunch of time and cables for likely another 600 dollars or so....(likely a few more expenses to be added into the final cost)
3.2V x 280Ah x 64 version 3 EVE cells = 57.344kWh
the difference I see is you are not limited to an expensive inverter choice or an expensive incompatible mppt solar charge controllers, and some will limit the discharge on the pre-built units so can also be a stumbling block some folks do not factor into their builds...
just thinking on the keyboard????
the NEEY 15 amp smart active balancer is an addition for about 320 dollars or so (mas o menos)...
apple and oranges >>> oh no
time to go .....
ymmv
Steve_S
Emperor Of Solar
I'm just curious if you ever drain that beast down to say 15 or 20% and then go to charge it, how long & how much will that take to get to 3.45V per cell.
michael d
off-grid solar pilgrim
64 cells 280Ah version 3 cells: 8P8S configuration 24-volts
the one thing I do not like about the NEEY 15Amp active smart balancer is >>>
the app always tries to get you to open or download other apps >>> an advertising gimmick for the free app for the needy 15amp active smart balancer...
but you need the app to see what it is doing on the battery build....
I think this is kind of a bad design but likely purposely done via NEEY... ( the advertising app )
Also when I go a few feet away from the NEEY active balancer the Bluetooth connection quits,,,, but the 64-cell LiFePO4 battery and such is in an outside insulated building covered with white steel....
I may get another cellular to run the app on a different Android cellular....
I also may try to put the app on a computer or something....
I really dislike the advertising to get to the app....
It has been raining for days; which was needed but a little more sun would be ok now!!!
the one thing I do not like about the NEEY 15Amp active smart balancer is >>>
the app always tries to get you to open or download other apps >>> an advertising gimmick for the free app for the needy 15amp active smart balancer...
but you need the app to see what it is doing on the battery build....
I think this is kind of a bad design but likely purposely done via NEEY... ( the advertising app )
Also when I go a few feet away from the NEEY active balancer the Bluetooth connection quits,,,, but the 64-cell LiFePO4 battery and such is in an outside insulated building covered with white steel....
I may get another cellular to run the app on a different Android cellular....
I also may try to put the app on a computer or something....
I really dislike the advertising to get to the app....
It has been raining for days; which was needed but a little more sun would be ok now!!!
michael d
off-grid solar pilgrim
The 64-cell 8x8 battery build has been in operation for quite some time now.... (using 64 of the Eve 280Ah version 3 cells) in a 24-volt configuration!
It's almost 7 months since my last post about it...
perhaps on Thanksgiving day 11/28/2024, I can try to get some new pictures of it...
I know there were a lot of folks who thought other voltages should be built...
yes, that is all fine advice
but I wanted to work with 24-volt inverters on this particular build...
The 64-cell 8x8 battery has been continuously hooked to a 24-volt inverter running small loads around the off-grid solar power shed.
all the pieces and parts seem to be getting more expensive with the rampant inflation in the USA.
sure glad I bought a lot of the pieces and parts earlier at lower prices...
been actively involved with my mountain property and a gazillion other things (time flies by so quickly)
more later,
It's almost 7 months since my last post about it...
perhaps on Thanksgiving day 11/28/2024, I can try to get some new pictures of it...
I know there were a lot of folks who thought other voltages should be built...
yes, that is all fine advice
but I wanted to work with 24-volt inverters on this particular build...
The 64-cell 8x8 battery has been continuously hooked to a 24-volt inverter running small loads around the off-grid solar power shed.
all the pieces and parts seem to be getting more expensive with the rampant inflation in the USA.
sure glad I bought a lot of the pieces and parts earlier at lower prices...
been actively involved with my mountain property and a gazillion other things (time flies by so quickly)
more later,
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