Looking for a new BMS system for 14x LiIon 18650 batteries with a storage capacity of 30kwh


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Walde

Member
Joined
May 18, 2018
Messages
130
Looking for a new BMS system for
14x LiIon 18650 batteries with a storage capacity of 30kwh

Volt maximum 57v (60V overcharged) Li Ion 18650 cells 14x parallel with maximum 4.10V each.
Currently I still have the old "DIY BMS 2.0" running, which is good except for the communication bus.

What alternatives do you have running or would you recommend

My plant about 1-2 years ago. Just more batteries now
DIY Powerwall Home Drive V2
 

OffGridInTheCity

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Joined
Dec 15, 2018
Messages
2,073
Skipping thru the youtube I see Chargery and perhaps Stuarts DIY?

I use Batrium but it's significant $. I also use Chargery and even though 40% of them break, the ones that work are doing well!

Can you narrow down your criteria a bit - e.g. are you going for DIY or limited $ or .... For example, what would turn you away from Batrium?
 

Walde

Member
Joined
May 18, 2018
Messages
130
Can you narrow down your criteria a bit - e.g. are you going for DIY or limited $ or .... For example, what would turn you away from Batrium?
Batrium is just too expensive for me. Shipment to Germany and then customs fees and 19% import sales tax
 

Oberfail

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Joined
Jun 22, 2021
Messages
247
Currently I still have the old "DIY BMS 2.0" running, which is good except for the communication bus.

What alternatives do you have running or would you recommend
The newest DIY BMS Version. Tons of improvements have been made. But due to the chip shortage, it takes time to get the parts and you need to solder some yourself.
 

Walde

Member
Joined
May 18, 2018
Messages
130
The newest DIY BMS Version. Tons of improvements have been made. But due to the chip shortage, it takes time to get the parts and you need to solder some yourself.
DIY BMS 4.0 would be an option. But maybe there are alternatives in this area. In terms of cost and labor. I became a father and there is a shortage of both. I hope you understand what I want to say.
 

Oberfail

Member
Joined
Jun 22, 2021
Messages
247
Yeah, but sadly the only alternative is Batrium for a ton of $ with what i heard pretty horrible support.
If you are a bit patient, there are people bulk ordering parts of the bms here and there: https://forum.drbacke.de/
 
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