How do I programe my victron solar charge controller to stop charging lithium battery at 80% SOC

DIY
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Hi , I have a log cabin in a bit of woodland I own that I go and stay in once every 6 weeks. I have a small off grid 12v system running mostly lights and charging phone/ipad etc. This is a solar system run through a Victron Smart Solar 100/20 which is charging a Titan 200ah Lithium (LifePo) battery. By the time I have left the cabin after the weekend the battery BMS shows 65% SOC. When i return the battery is at 100% SOC. Given that it can be 6 weeks between visits and the battery has likely charged within the first week of leaving, does the battery risk damage floatcharging at 100% SOC for 6 weeks? I have read that LiFePo batteries like to sit at around for periods of time at around 80%SOC (and 100 % every now and then to balance the cells).

So my question (finally-apologies) is ; Is ther a way to programme the charge controller to stop charging the battery when it reaches 80% SOC,. My only other alternative is to switch off the solar system every time I leave and turn it back on when i visit and hope it generates enough power to rep[lenish the battery to around 80% SOC.

Also am I overthinking this whole issue???

TIA

Matt

2

Set the loading voltage lower when you want to go home 90 so i made this for my system in my camper.

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Set Absorption ~13.4V, Float ~13.3V, Absorption time = 0.1h.
This will “park” the battery at ~80%.
Every few visits, disable this and let it hit 14.2V once to balance.

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Thanks thats perfect. Will change the settings next time I go. Cheers