question

ewalderasmus avatar image
ewalderasmus asked

Pylontech US3000C Charging Characteristics

Good day all,


It is my first time installing a 3000C pylontech battery, and the charge curve looks very different to the US2000B I have installed before. The settings are all correct and the device is happy, the only thing I can think of is that the battery BMS is not asking for current, which is different to my us2000B installation...


Any one else seen this? I assume it is normal as the system works flawlessly, just very odd.


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Side note- I did use a type A cable and not a type B cable as per the updated Can bus communication report

battery chargingPylontech
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1612792019299.png (33.2 KiB)
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2 Answers
checkit avatar image
checkit answered ·

@EwaldErasmus I am seeing the same behaviour with my two US3000C batteries. As soon as the batteries start discharging the charge current limit changes to 74A. When the batteries reach 100% SOC the charge current limit drops to zero - indicating that they will not accept any more current. Seems totally normal to me. The US3000C batteries are probably not running on the same firmware as the US2000's.

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ewalderasmus avatar image ewalderasmus commented ·

@CheckIT


Thank you very much! As long as Im not alone then im happy.


Please change your comment to an answer so I can mark it as correct.

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Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @EwaldErasmus

A new battery needs to be kept fully charged until this doesn't happen anymore, this way the battery can balance properly. after it is fully balanced, this behavior should not re-occur.

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ewalderasmus avatar image ewalderasmus commented ·

Hi @daniel

Thank you, the battery has been on charge/connected to the system for over a week and a half and still doing that.

The SOC says 100% and has been at that continuously.


We experienced some loadshedding last week and the batteries were drained to 75% and charged up again and the same charge cycle continues.


I haven't seen many people post about the 3000C models, Could it be a charging characteristic which is unique to these 3000C's?


Regards Ewald


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Matthias Lange - DE avatar image Matthias Lange - DE ♦ ewalderasmus commented ·

You should ask that question Pylontech not Victron.

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Related Resources

Victron Pylontech battery compatibility guide

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