Battery temperature

DIY
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1

Please help me understand. I am a beginner.

I have a MultiPlus-II 48/5000/70-50 230v inverter, Cerbo gx and 2 Pylontech us3000c batteries.

Everything works.

I use the system due to severe electricity restrictions. This is very important.

During this period, the temperature outside is between 30 and 36 degrees Celsius. Therefore, the temperature in the room where the equipment is installed is up to 39 degrees Celsius.

I want to understand what battery temperature is critical? What is the temperature limit for normal operation? Usually, the temperature of the battery rises, for example, to 42 degrees when the batteries are charged (after the network is restored). I set the charge current limit to 45 Amps. The battery is charged from a discharge stage of, for example, 62% to 100% very quickly - approximately in 1 hour.

What is the maximum charge current for two batteries? Is it correct to set its limits?

How does the system account for the rise in battery temperature during battery charging?

Am I correct in understanding that the T-sense sensor is not required when using Pylontech batteries?

When using the system, the inverter shows the lamps ā€œmains onā€, ā€œbulkā€ or ā€œabsorptionā€, and ā€œinverter onā€ (or flashing ā€œinverter onā€) - when there is a network. When there is no network, the inverter shows the ā€œinverter onā€ lamp.

Sorry for the machine translation.

Help me learn.

2

Hi

If connected in the right way
The pylontech bms controls charging and monitors battery temperature

(Ps Your topic title is not readable)

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3

Working Temperature from the pylontech us3000c
0ā„ƒ~50ā„ƒ Charge
-10ā„ƒ~50ā„ƒ Discharge
So 42 degrees is in the limit.

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4

Thank you
Topic: ā€œBattery temperatureā€.

Connected by a specialist. I think correctly.
Tell me how the system reacts when the temperature rises?

5

Thank you. I understand you mean the external ambient temperature for the battery.
I wanted to know the limits of the internal temperature of the battery - inside, which is important.

6

That info is not in the manual, so you would have to ask pylontech support

However, according to the manual the bms also protects against high and low temperatures

I would assume it lowers the charge/discharge current if temp is too high

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7

Hi @ALF-Li
The temperature communicated by BMS is the internal temperature.
Also, the following values are considered as limits by Pylontech and programmed inside BMS.
All values are Celsius.

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