EASUN 3.5KW-24V with Victron 75-15 parallel for small solar panels?

[MrSteve]

Hope you guys can help me out.

I currently have a 3000W grid-tie inverter and solar on my rental property.

I would like to have backup power and ordered a EASUN 3.5kw-24V inverter
and planning to buy 8 280AH cells and all the goodies to make a reliable system.
So in case grid goes down (never does but still..) i can switch to the EASUN and use the solar on the roof with battery backup.

I know its heavy but i would like to make the inverter and battery mobile so i could take it with me.
Off course i can't take the solar on the roof but i do have 2x 100W "briefcase" solar panels for camping.
These have a 22V-4.5A output.
But mppt voltage range of the EASUN is 120-450V.

Can i parallel a Victron 75-15 to the battery to hook up the 2 100W solar panels,
charge the (yes very slow, last resort) 280AH cells and use the EASUN inverter for 240V power?

Thanks.

 

[JeepDaddy]

Sure, that should work fine.

 

[MrSteve]

Sure, that should work fine.

Thanks for your reply!

 

[lexio]

use this BMS

Seplos 8s 200a 24v Lifepo4 Lithium Battery Protection Board Lfp Cell Balance Integrated Circuits Bms - Buy Bms Protection Circuit Module For Lifepo4 Battery battery Management System Bms lifepo4 Battery Product on Alibaba.com

Seplos 8s 200a 24v Lifepo4 Lithium Battery Protection Board Lfp Cell Balance Integrated Circuits Bms - Buy Bms Protection Circuit Module For Lifepo4 Battery battery Management System Bms lifepo4 Battery Product on Alibaba.com

cn1524225498fqks.en.alibaba.com

gen set will not work

 

[MrSteve]

use this BMS

Seplos 8s 200a 24v Lifepo4 Lithium Battery Protection Board Lfp Cell Balance Integrated Circuits Bms - Buy Bms Protection Circuit Module For Lifepo4 Battery battery Management System Bms lifepo4 Battery Product on Alibaba.com

Seplos 8s 200a 24v Lifepo4 Lithium Battery Protection Board Lfp Cell Balance Integrated Circuits Bms - Buy Bms Protection Circuit Module For Lifepo4 Battery battery Management System Bms lifepo4 Battery Product on Alibaba.com

cn1524225498fqks.en.alibaba.com

gen set will not work

Nope i will use a Overkill Solar 120A 8S BMS.
I already use a 120A 4S and like it but thanks.

 

[lexio]

Nope i will use a Overkill Solar 120A 8S BMS.
I already use a 120A 4S and like it but thanks.

build the same system, but if you use 3500w you need a bms of 145 amp 3500/24 on that system i have have 2*
Overkill Solar 120A 8S but you miss out on the pylon tech protocol

Attach BMS

Do you guys have good ways to attach a BMS to wood? I thought about using zip ties or some kind of strap but I want to check for better ideas. Mine is the Heltec with active balance (about 5" x 8" x 1"

diysolarforum.com

 

[MrSteve]

build the same system, but if you use 3500w you need a bms of 145 amp 3500/24 on that system i have have 2*
Overkill Solar 120A 8S but you miss out on the pylon tech protocol

Attach BMS

Do you guys have good ways to attach a BMS to wood? I thought about using zip ties or some kind of strap but I want to check for better ideas. Mine is the Heltec with active balance (about 5" x 8" x 1"

diysolarforum.com

Yes you are correct on that.. my fault, if i use full 3500W the 120A is to small.
I said i build 1 battery but in my mind i was thinking about building 2 battery's (smaller AH) and in parallel 120A should be fine.

I will check out and google the Pylon Tech Protocol, i dont know what that is..

Thanks.

 

[lexio]

i think( hope) you can DIY a pylon tech battery and control your inverter with your BMS so no hard shutdowns of your inverter cos your bms is cutting of. convinced that pylon tech is using this bms

 

[lexio]

have this one

416.44US $ 22% OFF|Easun Power Bluetooth Inverter 3000w 500vdc Pv 230vac 24vdc 80a Mppt Solar Charger Support Mobile Monitoring Usb Lcd Control - Inverters & Converters - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

you can`t connect a cheap gen set to this one
have tested 3 sets

 

[MrSteve]

have this one

416.44US $ 22% OFF|Easun Power Bluetooth Inverter 3000w 500vdc Pv 230vac 24vdc 80a Mppt Solar Charger Support Mobile Monitoring Usb Lcd Control - Inverters & Converters - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

you can`t connect a cheap gen set to this one
have tested 3 sets

I already ordered mine.
I have no need for a gen set, maybe in the future.

 

[lexio]

witch one do you have ?