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Discussion Starter #1
Like the title says:

Can someone enlight me on the 'best' charging profile for Nissan Leaf cells when using a Brusa NLG5 charger ?

I believe Nissan only charges the cells to 4.00V (each).

For my 48cell setup I'm considering doing a CC (ConstantCurrent) bulk charge at 25A/196V and move to the next fase when 192V is reached,
The second/final fase with a CV (ConstantVoltage) charge at 2A/192V charge will finish when it reaches 1A.

Any other suggestions ?

Paul
 

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Hi Prensel,

I have installed a brusa nlg513 as an addon charger into my nissan e-nv200 van to double the charge rate to 32 amps, it works very well indeed.

I programmed my own profile to be honest, nothing complicated, bulk charged all the way to the set voltage and then switched off the charger.

When monitoring my van charging with leafspy, i could see the van charging at max capacity to about 90% chage level before the charge current tailed off towards the end of charge.

The cells in the van (which are exactly the same as leaf cells) charge to about 4.14v absolute maximum.

When i installed leaf cells into a prius plug in conversion, i charged them to 4.1v and used that as my max, well inside the parameters nissan use.

Hope this helps.

Anthony.
 

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i think i can remeber taking a screenshot of the brusa chargestar menu config page when i set up the brusa charger, ill see if i can find them and post them here for you to see the parameters i use.

Anthony.
 

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Discussion Starter #4
Hi Anthony,

That's great information, thanks !
I have now set my charger in automatic charge with 3 I fases and 1 U fase:

I1: 5A at max 4.03V per cell for 1 minute
I2: max Amps till 4.03V per cell,
I3: 5A till 4.04V per cell
U4: 2A at max 4.05V per cell until current is less then 1A
My BMS kicks in at 4.05 with shunting.

I'm planning on using one charger as master and adding two slaves for bulk only running fase I1,I2

Regards,

Paul
 

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Hi Paul,

great to hear youve set up your charger, they are great chargers.

I trie to set mine up originally in mimic mode, where the original in car charger AC wires were wired in bypass mode through the brusa, thei idea here is the brusa monitors and reads the current the oem charger is taking and gives out the exact same current.
Sadly, in my case, my charger didnt like to run in this mode, to i reverted to a charge profile of my own parameters, basically i monitored the oem charger charging via leafspy and installed the same parameters into the chargestar software, bulk charged a few times to make sure it was all working ok, then just let it run.
Been working fine for over 18 months, this was a 2010 brusa charger that was 2nd hand that i picked up from the forums.

Anthony.
 
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