When our 200 Ah LiFePO4 battery is in storage mode when or what voltage does the 12V/30amp charger start back charging in abs or bulk mode to bring up to full charge? Our problem is that when in storage mode apparently it can drop to as low a 13.1 volts which is about 60% SOC and when we get to the boat to leave dock we dont have a close to fully charged house battery and that is a problem. How can we set it to keep at least 13.5 / 13.6 volts and not go to storage or make storage 13.5/13.6 volts and any voltage below that it starts back charging? There is a small 4 amp intermittent parasitic draw on the house battery and that is what is causing the voltage/charge to slowly drop to 13.2/13.3 over a 3-4 day period. Can you advise a expert setting to achieve this 13.5/13.6 minimum voltage (and therefore a 90-95% SOC?
If it is always in use, disable storage mode.
Use the custom profile and set a float and bulk/absorption.
The voltage chosen for the battery are what the manufacturer recommends.
How do we disable Storage mode? Took a while to figure out how to set to āSmart Lithiumā LiFePO4 and then in expert mode what about Absorption duration āadaptiveā and Re-Bulk method āVoltageā ? Need the battery to be at 95% or so SOC as when getting to boat and want to leave dock for the day all DC loads on the boat are powered by the 200 Ah battery. Currently we have our fridge on DC power and it is taking 4.1 amps at about a 50% duty cycle all the time. This is slowly discharging the battery but the charger waiting for voltage to drop to 13.1 VDC before re-bulk or float to bring it back up means we only have about 60% SOC battery to use when off shore power and at sea? T
Last question = Can charger be put into power supply mode while battery is connected and is voltage constant at 12.9 VDC when in this mode?
hanks for any advice!
I am having the same issue with my IP22 charger. With no load while Iām away from the boat, i return to see the SOC at 44%, slowly dropping, and the charger in storage modeā¦ I would like to keep the batteries in a higher SOCā¦ greater than 80% ā¦ but i canāt seem to disable storage mode.I have 2 - 280AH batteriesā¦ they are also connected to a Victron smart solar 100/30.
Anyone have insight into the storage mode problem?
You dont need to disable storage mode, create a pre set . Our problem solved by creating a user defined pre set in custom mode as follows (but figuring out how to do it a whole different problem)=
Absorption = 14.6VDC (what our battery requires to reach 100% SOC and the BMS to do a top balance)
Float = 13.8 VDC
Storage = 13.8 VDC
Re-bulk method = voltage
Re-bulk voltage offset = 0.10 Volts (this causes the charger to kick back in when voltage drops from 13.8 to 13.7 volts and keeps battery at approx. 95% SOC)
Absorption Duration = adaptive
Max Absorption time = 10 hours
Repeated Absorption = every 3 days
Not sure why Victron doesnāt have a easier way to create a custom setting or a pre set for our type of usage in a marine application. The Smart LiFePO4 preset with 14.2 abs voltage and 13.5 float/storage left us with a 62% SOC battery when getting to the boat and ready to leave dock.
The preset is for Victron Smart Lithium batteries, which are different to most drop ins and charge at lower voltages as they do not have internal BMS voltage drop to deal with so the 13.5V keeps those close to fully charged.
Thanks, that was what I was thinking. My battery requires 14.6 to get a 100% SOC. And my float/storage settings at 13.8 may be a little high but rather have above 95% SOC for our marine application duty cycle. Battery is 4 years old now and the 14.6 VDC charger supplied with it was connected continuously and just kept it there until buying the Victron charger. No problems with the 200 Ah battery to date and from original purchase price of $829 in 2020 it is now available for $329 delivered via Amazon. Crazy how much these LiFePO4 battery prices have gone down!
How do I disable storage mode?
Have you tried switching on expert and editing it to create your own profile?
If you canāt remove it, make it the same value as float. Then the rebulk offset should trigger a new cycle
Yes using expert mode cant disable storage so I have changed storage to 13.7 same as float 13.7. Re-bulk offset is set to 0.10 volts. Just want a 95% or so SOC all the time so when getting to boat and want to leave dock we have a full house battery. Still not sure about re bulk method (current or voltage, set to voltage now) or absorption duration (set to adaptive)? Thanks for your help!
If your batteries want a fixed duration, use that.
If not adaptive has been fine for ages on my one lithium
I have set to adaptive and seems to be doing fine. Still cant find anything on You Tube etc with anyone showing how to set up a profile/setting for non Victron LiFePO4 batteries! Has to be thousands of people with boats/marine applications that have non Victron LiFePO4 batteries? Also, when I create a custom setting does it stay in my phone app or go to the chargers memory? Can I create a setting on the phone app when not connected via Bluetooth to the charger and call it up later when connected to the battery?
If you had fully charged LiFePO4 batteries and no load on them they shouldnt have dropped to 44% SOC? You either didnt have fully charged or had some parasitic load draining them?
No they shouldnāt have dropped soc without a load of some kind.
The custom settings are sent to the charger but the profile is saved on the device you created it on.
You van create a profile in almost any mppt or charger (even on the demo library) on the app and save the profile then load it on when you get to site.
I have about 17 profiles saved for all the different batteries we use.
I did have an inverter load on the battery bank while i was away, so the drop was normal, except i was expecting that the charging system would keep the bank in a better SOC.
Have you created a custom setting to keep the battery at a 90% or so SOC?
Our battery is doing fine now and keeping battery at about 90%-92% SOC and while at the boat this weekend the charger is handling the small house loads without the battery loosing SOC>
Could you post the battery presets you choose for the IP22? Thanks.
Douglas A Nicholson basta350
16 December
Could you post the battery presets you choose for the IP22? Thanks.
Thanks Robert, much appreciated. Like you, i find it surprising that there is not a good YouTube video by someone with more expertise addressing this.
I have two 230Ah LiTime bluetooth batteries, in parallel. Unfortunately, the āsmartā batteries, or their app, is really very dumb, and untrustworthy in the readings it gives. Voltage readings on my multimeter differ considerably from the apps.
Doug
S/V Akari. Bavaria 37, 2001. Blaine WA.
Yes, the pre set settings in the Connect app for Li-ion batteries (and the label is āLi-ionā)are for āsmartā Victron batteries. Nothing for the rest of us that have LiFePO4 batteries and built in BMS non Victron versions! It took me a long time to figure this out but finally found out that the Victron Lixxx batteries dont have a built in BMS, its done externally from somewhere else :(. You would think that thousands of other folks that dont have Victron batteries would like to see a built in pre set for our batteries? The ability to go to a custom setting was finally how I got to where I am today after several months of research. Hope you cn get your system figured out! I might be wrong with my statement but maybe someone from Victron can set me straight 
Also, don believe the app voltage is actually telling you the true battery voltage. I have a external shunt and a Blue Seas digital voltmeter that tells me what the real voltage is at the battery terminals.