question

Mathew Hamilton Green avatar image
Mathew Hamilton Green asked

Inverter Battery Voltage drop on startup…

Hey


I have a Victron 800w 12V inverter connected to Lithium Ion cells. 4S configuration totalling around 16.4 volts.


On startup it sometimes takes a few attempts with very little load like an iPhone plugged in. The low battery alarm keeps coming on even though it’s set to 12V…

Is this normal or is there an issue?


Cheers

Mat

Lithium BatteryPhoenix Inverterbattery system voltage
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klim8skeptic avatar image klim8skeptic ♦ commented ·
Some details about your battery/bms might be useful.
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3 Answers
Trevor Bird avatar image
Trevor Bird answered ·

It is not normal. Perhaps check the DC voltage on the inverter during start up to see if the voltage really is low.

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Mathew Hamilton Green avatar image
Mathew Hamilton Green answered ·

Hi

It is a self built 4S73P Lithium Ion battery pack.
No BMS just an active balancer that keeps the packs within 8mv of each other.

The voltage is always above 16V.



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Mathew Hamilton Green avatar image Mathew Hamilton Green commented ·
18650 cells...
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Alexandra avatar image
Alexandra answered ·

@Mathew Hamilton Green

Do you have it on eco at all?

Also disable dynamic cut off.

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