EasySolar 1600/24/40, victron agm deep cycle batteries 4 pcs 12v 220Ah each, connected as two 24V packs to get 440Ah capacity.
Two generator aided loading scenarios. Both started after slowly discahrged to arpund 23,9V
First one was 5th of december, temperature went -27 celcius degrees and 2000w generator ran for few hours, i started it several times cause every time voltage hopped up, and charging power went rapidly down. Strange voltage, almost immediately absorption mode because voltage so high.
After I got home, i upgraded latest firmware to easysolar and double checked everything. Believe that only setting I altered was UPS functionality on. Checked charger voltage and max charging amps…
Second try. Temperature around 0 degrees celsius. Same setting, now it workef just like it should. Amps went up to >33A and voltage hopped 24->27 and SLOWLY reached absorption voltage a litte under 30 (default voltage settings for victron AGM from vconfig software) After hitting absorption mode, voltage flatlined and current dropped more rapidly.
question, did I have something terribly wrong on first run or was there some known firmware bug causing this or could the temperature be the reason, I read that victron VRLA battery such as AGM should have -4mV/c temp compensation per cell, so would that mean -48mV for 24VDC pack? I remember that default compensation in EasySolars vconf is not -48mV but rather somewhere around -30mV? Thats default when I choose AGM deep cycle victron battery preset. Could that affect this much?
Yellow is current blue voltage. Started and stopped generator several times wondering why it jumped immediately over 30V
Also, the charger mode seemed a little restless
And the better run shown here. Few stress tests for genset with coffee machine and microwave oven shown here. ;-)
More peacefull mode changing here
