Unequal discharge

[Bessy765]

Hi 2 x 280 lithium pro (new) parked up noticed only one is showing discharging?

Also a real struggle to connect to Bluetooth

 

[Jev88]

How are they wired? Parallel?

 

[Cush]

If new they will take a while to settle down and the SOC be anywhere near something like accurate. Voltage of 13.2 wouldn’t indicate nearly full. Sorry can’t help with the Bluetooth issue.

Guessing the 4 amp draw is lights etc?

Give them time and plenty of full to empty cycles. Be interested to know how long they will take a charge for.

 

[Bessy765]

I have run them completely flat then fully charged them, but as I have already posted my Victron 12/2000/80-30 max voltage is 13.5 and max amps
When charging is 59 where it should peak at around 14.4 and 80 ish amps. It only shows bulk charge until it stops charging

 

[Cush]

Ah. Sorry. The whole Victron thing is “out of my lane” but sounds suspect at 13.5 volts. The big boys will be along soon to sort you out I’m sure. Hope it all gets resolved.

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[Bessy765]

Many thanks

 

[bigtwin]

Switch on a large load and I’m sure that the second battery will kick in.

Ian

 

[Whippet93]

How are the batteries connected? My original batteries (2 x 105 Ah gel) were connected "incorrectly", with the second battery connected only to the first. Apparently this meant that one battery was always taking more load than the other, and one wasn't getting as much charge. I think there's info on a thread about how they should be connected to evenly distribute the load and charging. When they were replaced the dealer connected them differently.