question

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mamusa asked

True battery charge level

I just installed a Victron system similar to the VW van install and am on the road trying it out. My system has two160 AH batteries and resides in a trailer. The problem is that when charging from the truck, as soon as the truck is turned off the smart BMV shows the charge to be 10p0% the costumed Ah goes to zero and the system keeps on charging. Consequently, I don’t know the true charge level of the charge when I start charging or discharging. Is this a software issue or something else?

battery charging
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2 Answers
imac avatar image
imac answered ·

What type of batteries are they? If they have a BMS, you could get the correct data from that. If they are lead acid you may need to check your wiring. What is the BMV connected to? If its a shunt, have you got this installed correctly in the correct position in the wiring?

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mamusa answered ·

The batteries are Lithium, there is a BMS and the BMV is connected to the shunt. The shunt does shows the power usage. I will check the BMS when I use the batteries.

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