I've got some grade "A" eve cells coming slowly and realized that I need another 8 and am trying to source them in the US. I've only found one place remaining that seems to have them in stock. The cells are "B" cells, but new. Any issue with paralleling a battery built with these with batteries built with "A" cells later?
mixing grade b cells with grade "a"
- Thread starter mtnman1
- Start date
timselectric
If I can do it, you can do it.
- Joined
- Feb 5, 2022
- Messages
- 18,551
They are all grade B. Otherwise, they would be getting installed in automotive applications.
Calling some grade A, is just marketing hype.
There's no issue with paralleling them together.
Calling some grade A, is just marketing hype.
There's no issue with paralleling them together.
Alkaline
Solar Wizard
Before you listen to this guy you should read up on the forums.
hankcurt
Solar Enthusiast
Did the vendor with the 'Grade B' cells say why they are being sold as grade B?
It seems that if the cells don't have obvious damage, the vendors always say they are Grade A. If the 'Grade B' cells have bloating or dents, I would have reservations about throwing money at them.
Neither 'grade' has any official definition.
It seems that if the cells don't have obvious damage, the vendors always say they are Grade A. If the 'Grade B' cells have bloating or dents, I would have reservations about throwing money at them.
Neither 'grade' has any official definition.
Steve_S
Offgrid Cabineer, N.E. Ontario, Canada
Don't worry so much about it. Take each bundle, top charge to 3.650, assemble the 8 into series & add BMS. Then connect to a parallel set of busbars and out to AIO or Inverter system with the usual fuses, switch etc
If used within the working range of 3.000-3.400 you will 99% chance have no issues if you put them together properly. If you go outside those ranges the lesser quality cells will likely be runners, Down fast from 2.900 and / or climb fast from 3.500
If used within the working range of 3.000-3.400 you will 99% chance have no issues if you put them together properly. If you go outside those ranges the lesser quality cells will likely be runners, Down fast from 2.900 and / or climb fast from 3.500
Alkaline
Solar Wizard
What happens when you parallel a dipper with a normal cell, the dipper drains the good cell until it levels it out with its voltage unless I'm missing something.
