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Unread 10-30-2019, 09:46 AM   #1
Not Yet Wild
 
Join Date: Apr 2013
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Default Zeva BMS Settings

I know this is probably somewhere but after weeks of searching and guessing I thought I would just throw this out there and see what comes up.

I just finished up my 14 leaf module conversion using a Zeva BMS16 v2 with an eltron CAN enabled charger.

My question is has there been a consensus of what the settings should be on the BMS. In all the threads I been reading it seems most people have their own interpretation and while most people are close there is still enough difference to make me wonder which way to go.

So as a group, especially people who have done this conversion using the same components as I, what should all the Zeva settings be set to?
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Unread 10-30-2019, 10:07 AM   #2
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Default Re: Zeva BMS Settings

Max Cell voltage: 4.17
Min Cell voltage: 3.25
Balance voltage: 4.14
Charger voltage: 58
Hysteresis: 0
Full voltage: 58
Capacity: 120ah
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Unread 10-30-2019, 11:15 AM   #3
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Default Re: Zeva BMS Settings

Quote:
Originally Posted by NCPW View Post
Max Cell voltage: 4.17
Min Cell voltage: 3.25
Balance voltage: 4.14
Charger voltage: 58
Hysteresis: 0
Full voltage: 58
Capacity: 120ah
Thanks for the quick response!
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Unread 10-30-2019, 11:29 AM   #4
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Default Re: Zeva BMS Settings

I'm sure other's have their on opinions on settings, but these have worked well for me.
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Unread 10-30-2019, 12:54 PM   #5
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Default Re: Zeva BMS Settings

The next option if You don't need all the range the 120AH pack can provide on a single charge, have Regen brake or a new pack that is a little out of balance, is to lower the charge voltage to 57v (The Elcon voltage can only be changed in increments of 1v).
Max Cell voltage: 4.17
Min Cell voltage: 3.25
Balance voltage: 4.07
Charger voltage: 57
Hysteresis: 0
Full voltage: 57
Capacity: 120ah
That allows for more headroom for both the charging balance and the Regen current absorption.

If You are using an Altrax Controller like the XCT, also set:
Min Undervoltage: 46v
Max Overvoltage: 58v

A lower final charging voltage is also better for the pack in the long run.
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Unread 10-30-2019, 02:17 PM   #6
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Default Re: Zeva BMS Settings

Quote:
Originally Posted by Sergio View Post
The next option if You don't need all the range the 120AH pack can provide on a single charge, have Regen brake or a new pack that is a little out of balance, is to lower the charge voltage to 57v (The Elcon voltage can only be changed in increments of 1v).
Max Cell voltage: 4.17
Min Cell voltage: 3.25
Balance voltage: 4.07
Charger voltage: 57
Hysteresis: 0
Full voltage: 57
Capacity: 120ah
That allows for more headroom for both the charging balance and the Regen current absorption.

If You are using an Altrax Controller like the XCT, also set:
Min Undervoltage: 46v
Max Overvoltage: 58v

A lower final charging voltage is also better for the pack in the long run.
Thanks for the tip I was already thinking along those lines but good to have verification
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