question

peterako avatar image

Mppt 150/75 setup as 24V is changing its voltage setting

I have installed a MPPT 150/75 connected to a 24 Volt battery bank. 2 days ago the battery dropped by mistake to a very low voltage (0% charge) . the next day when the sun came back the MPPT charger started as a 12 Volt battery as a result the battery (24V) never re filled.

My question is this normal or how can i avoid , i do have the connection cable and software to adjust the settings and monitor.

MPPT - Solar Charge Controller
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1 Answer
Daniël Boekel (Victron Energy Staff) avatar image

Hi @peterako

What firmware version is on your MPPT?

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After the 1st time that i connected my computer with the victron connect software it updated to version 1.48.

Tomorrow i am again on the site there are five independent systems installed i have this problem with only 1 system the other 4 respond perfect.

Hi @peterako

so this happened before you updated to 1.48?