Charger going to float early

[MarkCX]

I haven’t used my Victron BlueSmart IP67 charger for over 6 months as solar has been adequate, but now when I run the charger, it’s only staying in absorption for a maximum of 30 minutes, even though the battery is only at 90% and happily accepting 7+amps. I haven’t changed any settings in this time (only ever used defaults) although there has been a firmware update.

Is there any reason why this is happening?
6 months ago it would stay in absorption for several hours under the same circumstances.

 

[VicS]

I haven’t used my Victron BlueSmart IP67 charger for over 6 months as solar has been adequate, but now when I run the charger, it’s only staying in absorption for a maximum of 30 minutes, even though the battery is only at 90% and happily accepting 7+amps. I haven’t changed any settings in this time (only ever used defaults) although there has been a firmware update.

Is there any reason why this is happening?
6 months ago it would stay in absorption for several hours under the same circumstances.

Check the Absorption time settings.:

Make sure "Adaptive absorption time" is turned on if that's how you want it to operate otherwise check/ change the maximum absorption time to what you want.

 

[MarkCX]

Will take a look at the settings, like I say I’ve left it on default since I got it last year and it never used to behave this way, which is why I’m a little confused.
I assume that adaptive absorption is on by default, but I don’t really know whether it’s something I want on or not.

 

[VicS]

Or just do a system reset to reset to the default settings

 

[MarkCX]

Just taking a look and it appears that because I have solar as well, when the mains charger is switched on, it is seeing a higher voltage than it would do if the battery was ‘rested’. It’s assuming that the battery state of charge is higher than it actually is and adjusts the absorption time accordingly - does that sound feasible?

 

[halcyon]

Just taking a look and it appears that because I have solar as well, when the mains charger is switched on, it is seeing a higher voltage than it would do if the battery was ‘rested’. It’s assuming that the battery state of charge is higher than it actually is and adjusts the absorption time accordingly - does that sound feasible?

Smart chargers are not that smart, turn of mains charger, tonight when solar stops let batteries drain a bit, then put charger on, may go back to normal cycle.

Brian

 

[vas]

there were some serious re work by Victron on their solar charging policies. I'd check there, there's a longish thread early this year with I think noelex mentioning this and others elaborating on changes they've done due to this firmware update...

 

[MarkCX]

Thanks, will take a look. Only workaround I can think of at this moment is to set advanced settings for longer absorption and keep an eye on tail current myself.
Considering my Victron solar controller, battery monitor and mains charger are all Bluetooth enabled, it’s surprising that they can’t work a bit more cleverly with each other.

 

[PaulRainbow]

Check the Absorption time settings.:

Make sure "Adaptive absorption time" is turned on if that's how you want it to operate otherwise check/ change the maximum absorption time to what you want.

What settings would you recommend ?