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aelyafi avatar image
aelyafi asked

BMV and MPPT settings for Exide ER660

Hi

I have 6 ER660 Exide Batteries in my house bank. Lead Acid. 12V system on a boat.


Battery specs are as follows:

Capacity (each) 140ah (total) 840ah. Do I enter 840ah in BMV Battery Capacity?

20hour is 140ah

Ideal Charge Voltage is 14.4v

My BMV712 is currently set as follows:

Battery Capacity 840ah (is this right)?

Charged Voltage I entered is 14.2

Discharge floor 50%?

Tail current 4%

Charged detection time 3m?

Peukert Exponent 1.24

Charge efficiency factor 80%?

Current threshold 0.10A (I have no idea if this is correct)

Time to go averaging period 3m (again no idea).


I set the MPPTs on Rotary Switch 2. Should I change to user defined and enter the settings to something different from Rotary switch 2 settings?


Highly appreciate any help here.


BMV Battery Monitor
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1 Answer
michelg avatar image
michelg answered ·

Hi Aelyafi, yes it is 6x 140Ah => 840Ah ! But you should avoid having more than 3 batteries in parallel. It brings issues regarding the charging process. (Wiring size / distance to the bus bar).

Michel.


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aelyafi avatar image aelyafi commented ·

This is the setup that Lagoon Catamarans come with.


What about the other settings please?

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