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Cross-Post: Growatt settings advice

solarstuff

New Member
Joined
Jul 18, 2020
Messages
218
Location
Ontario, Canada
My Growatt SPF 3000TL LVM is a tad obscure to set up (48 settings).

I'm using AGM batts.Please tell me if you catch any mistakes in how I set a few of them?

Basic Settings

05 USE 05 (to let me alter 11, 12, 13)
11 10a (only trickle charges by AC)
12 at 24.6v tops up on AC
13 at 24.7v switches off AC top-up

Charging Voltage (I have AGMs)

19 default=28.2v (IS THAT OK?)
20 default=27v (IS IT OK FOR AGM?)
*21 21v low DC cutoff
(do settings 12 & 13 above prevent this from ever kicking in? So LOW!)

*Battery Equalization (I have AGMs)

I was using these numbers for 12v Equalization on my older renogy, but not sure how to fit them into 24v for Growatt:
Float: 13.7
Absorp: 14.5
Equalization: 14.9
(Should I just double them?) ...Back to the settings!

43 All 6 are disabled by default
44 batt eq voltage 29.2
45 time 60 min
46 timeout 120 min
47 interval 30 days
48 activate immediately (off/default)

Thanks for your 2c folks!
 
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