question

cookiedude avatar image
cookiedude asked

Why does it look like i have a low charge limit

Hi,

I have a fairly simple system Of an MP2 (10000kva) with 4 x pylontech US5000. Where the whole house feed first goes through the AC IN, then it goes from the AC OUT to the consumer unit.

Currently I have wired the batteries through 2 cables (one at top of stack and one at the bottom to create a round circuit) with a 125A DC (48V) fuse on each to protect each cable. So I should be safe to charge/discharge up to 250A (although I think the victron can only charge up to 140A).


My problem is that when using the ESS to do a scheduled charge it seems to limit the charge rate to ~70A (48v)

In VE Configure 3 The Charger tab has a 'Charge current' set to 140A

Anyone know if there is a setting I can change to get a faster charge?

(sorry cant seem to add images to this forum)

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nickdb avatar image nickdb ♦♦ commented ·
Yip, site is broken. You can also post at the new forum. Link available in modifications section.
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nickdb answered ·

What CCL is the battery sending?

What loads were running at the same time?

What is the temperature?

Any limits in DVCC?

Any input current limits?

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cookiedude avatar image cookiedude commented ·
CCL is 320A

loads are 0 (I have a solar inverter on the load circuit)
temp is 22 degrees C

There wasnt a limit on the DVCC, but I tried setting one to 200A (no effect that I could see)
There is a 50A (240V) input current limit but I am no where near that (it is currently plling 14A from grid)

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cookiedude avatar image cookiedude commented ·

Ps. Thanks for the very quick response!

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nickdb avatar image nickdb ♦♦ cookiedude commented ·
We’d need to see some charts, so maybe repost at the new site. I covered the generic causes. Did you run through the setup guide for pylon to confirm settings are correct?
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cookiedude avatar image cookiedude nickdb ♦♦ commented ·

OK.. created https://victron.discourse.group/t/why-does-it-look-like-i-have-a-low-charge-limit/886


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