Thread: Battery problem?

Still waiting on iTech to weigh in..
Victron shunt installed. BMV700.

Shunt shows 98% changed with 12.9V

Anyone installed a victron shunt lately?
is there some secret switch to let it know its dealing with Lithium batts?

The Victron guy has seen the .CSV file from the controller and is happy with its performance.

The Victron guy has seen the .CSV file from the controller and is happy with its performance

I posted the battery charge percentages a few days ago. These apply to virtually all LiFePO4 batteries.
Resting charge should be 13.6-8 for a fully charged battery.

Regards PhilipA

Originally Posted by PhilipA

I posted the battery charge percentages a few days ago. These apply to virtually all LiFePO4 batteries.
Resting charge should be 13.6-8 for a fully charged battery.

Regards PhilipA

I have a string of different lithium batteries, and I have never seen lithium batteries with a settled voltage that high. Maybe straight after a charger is removed, but normal settled voltage is 13.1v to 13.3v.

Originally Posted by drivesafe

I have a string of different lithium batteries, and I have never seen lithium batteries with a settled voltage that high. Maybe straight after a charger is removed, but normal settled voltage is 13.1v to 13.3v.

How many hours/days before you consider it settled Tim?

Originally Posted by Pedro_The_Swift

Still waiting on iTech to weigh in..
Victron shunt installed. BMV700.

Shunt shows 98% changed with 12.9V

Anyone installed a victron shunt lately?
is there some secret switch to let it know its dealing with Lithium batts?

The Victron guy has seen the .CSV file from the controller and is happy with its performance.

I installed a Victron BMV712 which is v similar to the BMV700. I used the shunt supplied with the smart meter. The shunt itself is "agnostic" to the battery type.

Have you checked the "zero current" calibration and other settings?

There's a reasonably active Victron user community...this link might be useful
Initial Smart Shunt & MPPT Settings for Victron Lithium batteries - Victron Community

cheers

Originally Posted by Hoges

I installed a Victron BMV712 which is v similar to the BMV700. I used the shunt supplied with the smart meter. The shunt itself is "agnostic" to the battery type.

Have you checked the "zero current" calibration and other settings?

There's a reasonably active Victron user community...this link might be useful
Initial Smart Shunt & MPPT Settings for Victron Lithium batteries - Victron Community

cheers

That link might be the ticket... Thanks Hoges!
I have been operating under the assumption the auto lecky changed ALL the necessary parameters in the shunt software--

but,, "Charged Voltage" by default is set at 13.2V
THAT link ^^^^^ says it should be 13.8.. Easy enough to change...
Also changed some other stuff, efficiency, some algorithm,
But isnt the controller supposed to work that voltage out??

Originally Posted by Pedro_The_Swift

That link might be the ticket... Thanks Hoges!
I have been operating under the assumption the auto lecky changed ALL the necessary parameters in the shunt software--

but,, "Charged Voltage" by default is set at 13.2V
THAT link ^^^^^ says it should be 13.8.. Easy enough to change...
Also changed some other stuff, efficiency, some algorithm,
But isnt the controller supposed to work that voltage out??

Not quite ... the controller is "blind" to whether the system is lead acid or lithium. Thus, it requires instructions to operate accordingly.
Glad the link was useful! There's also a lot of instructions at "Youtube University" on setting up the system.

Anyone care to workout the voltage drop on a 6metre cable run of 13v at 20A using 6awg?
is 0.45v close?