question

sean2222 avatar image
sean2222 asked

Charge voltage for 48v dyness battery

Hi, my smart solar 250-60 is bulking at 52v, is this not low for a 48v system? Granted it is an extremely full day but i thought the mppt would take care of that?

I’ll attach a screen shot bellow..

my system has 3.7kw of panels and a dyness 48v 5kwh lithium pack and a multi 48 3000img-2798.png

battery charging
img-2798.png (218.1 KiB)
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sean2222 avatar image sean2222 commented ·

An other point of confusion for me is that I’m reading there is no need for a smart shunt in my system since I have a bms battery, the smart shunt is always completely out of sync anyway so within the cerbo I have set battery monitoring to bms instead of the shunt, the only device that seems to be using the shunt is the smartsolar they the bt network,

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Alexandra avatar image Alexandra ♦ sean2222 commented ·
@Sean2222

Remove the Bluetooth network and let the GX control the mppt with DVCC using the battery as it is meant to.

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1 Answer
Alexandra avatar image
Alexandra answered ·

@Sean2222

What Dyness batteries do you have? Are they 15s or 16s? 52v is correct for 15s batteries and float at 51v. Those should be the two voltages programmed in.

Do they provide a guide for set up and programming with Victron and did you update and program all the Victron parts as required?

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