I am trying to understand the best way to charge both Lithium (House) and Led Acid (Start) incorporating a WakeSpeed regulator.
There are various diagrams online but it’s not totally clear how the combined setup works.
Would one of the two set ups below work? Or does anyone have a simple diagram to visualise the correct approach? Thanks.
I have batteries that are charged through solar and DC2DC. Recently the DC2DC has been going into absorption before the solar and reading the battery voltage as around 0.1v higher than the smart shunt and the MPPT. Both chargers are set to AGM spiral per seller guidelines, I can't seem to find direct manufacturer technical specs.
Is there anything that could be causing this discrepancy, I have checked the wiring and it's all firmly in place. The breaker was recently switched off by a falling box while driving but still flips on and off as usual. All pieces of kit are fully updated.
I have my Phoenix Smart IP43 charger setup to load my Varta Professional AGM 95ah battery.
I set the setting to AGM spiral cell, the values match w/my battery. A shame that there is no general AGM setting :(
I also have a smart sense temperature sensor linked in the smart network.
What I noticed though was that the charger at some point had 14.9-15.0 V. That is too high for the battery? I wonder because the setting AGM Spiral says 14.8 max.
I've just bought a Victron AGM 220 Ah 12V battery.
As it will be inserted in a 48V battery pack, I've measured the C20 capacity as well as for the three other existing batteries.
Before to check the C20 capacity, the battery was charged with a Victron charger.
4.7 Ah was added to fully charge the battery.
Then a 11A constant current was drawn from the battery during 17:42 hours, wich gives us a 195 Ah C20 capacity.
Ambiant temperature was found between 15 and 17 °C.
Then battery was fully charged again with 22 A bulk current :
so 183.8 Ah in Bulk, 55,1 Ah in absorption, so a total of 238.9 Ah loaded in the battery.
charge efficiency is 81.6 %.
Is it normal that C20 was found 11.3% lower than specified for a brand new battery and morover lower than 2 years old batteries?
Does this capacity increase after a few discharge/charge cycles ?
What are the manufacturer tolerances values about C20 ?
Thanks for your Help.
N.B.: the three other 2 years old batteries C20 capacity was measured with the same method:
B1 : 212 Ah
B3 : 211 Ah
B4 : 207 Ah
Bonjour, les batteries Victron AGM supportent-elles l'égalisation ? Si oui, à quelle tension et pendant combien de temps ? Merci
Bonjour, charger une batterie AGM à 2% de sa capacité (2A pour une 100Ah) va-t-il réduire sa capacité ?
I have 12 used agm batteries that I want to configure to a single 24v batterybank. How would you wire this in the best way? Do I need balancers? If yes, how many?
any help is appreciated. IP67 12/25 is connected to AGM battery with 92 Ah, temperature -2° C.
In all charging states the volate is fluctuating. Charge algorithm "AGM spiral cell" has been chosen (abs 14,70V, float 13,80V, storage 13,20V.)
On the left you can see the charger working in storage-mode. DC-load was 3W for Globallink 520 and some USB-sockets without any load. Look at the curve: Voltage is fluctuating every second (not seen here because Globallink gathers data only four times an hour.) But when i am checking the Voltage via Bluetooth right beside the installation i can see that voltage fluctates between min 13,30V and max 13,70V! That i am not reaching 13,20V is ok due the temperature of the battery while using temperature compensation as it is set by factory (-16,70V/°C) Is that normal behaviour?
On the right side of the chart you can see the same battery being charged without any load by a CTEK MX 5.0 Polar. This charger also compensates the batteries low temperature but look at the voltage of the charging states: bulk, abs and float are clearly visible and NO VOLTAGE HOPPING.
I have just bought a 125Ah AGM Supercycle Battery. I’m not sure why the data sheet and the information on the side of the battery don’t look the same.Could someone please advise me on the best Absorption, Float and Storage voltages for this battery. I have a Blue Smart IP65 charger and a an MPPT Blue Solar charge controller.
Cycle service Normal
Cycle service Fast recharge
14,2 - 14,6 V
14,6 - 14,9 V
13,5 - 13,8 V
13,5 - 13,8 V
13,5 - 13,8 V
13,2 - 13,5 V
13,2 - 13,5 V
13,2 - 13,5 V
First post and question about BMV-712 Smart. I have a 2019 Airstream with AGM batteries, 1000W factory inverter/charger and factory solar (180 watts). My question is the battery profile, I can't seem to find any information as to what to set the battery parameters to. It seems flooded and lithium are covered but not AGM. Does anyone have a reference of those settings should be? The batteries are 12v in parallel. The system works fine, I just want to ensure I have the correct floor values, charge voltage....etc... thanks for any help in advance. The batteries used are here: https://lifelinebatteries.com/products/marine-batteries/gpl-24t/
Lors de ma visite hivernale à bord, j'ai eu la désagréable surprise de retrouver mes 2 batteries servitude Vitron AGM 110 Ah vides. J'avais déjà eu le coup en mars dernier lors de la remise en fonctionnement et après une bonne recharge, elles ont fait la saison sans sourciller. Pour cette fois-ci, je les ai ramené à la maison, chargées à bloc et je surveille maintenant leur tension. Ma question : qu'est-ce qui peut bien provoquer leur décharge en 2 mois, sachant que tous les consommateurs sont coupés, coupe-circuit actionnés, il ne reste que le BMV 712 Victron en fonction à priori. Court-circuit dans une batterie ? Coupe-circuit collé et fuite électrique ? J'ai aussi le MPPT Victron du panneau solaire branché dans le système.
Je suis preneur de vos expériences en la matière. Merci à tous
I've installed a EasySolar-II 24/3000/70-32 with two AMG 260Ah 20HR 12V batteries.
The system is running, but I didn't find the setup for the battery capacity.
Can someone please tell me where to find the setting for the capacity and also for the SOC?
Thank you very much.
I have 5 12v 240ah AGM batteries. Which I need to wire in parallel question what size wire between batteries and what size fuse, question 2 what size wire from batteries to inverter. Inverter is a multi plus 2 12v 3000va 230v . The distance from the batteries to inverter is 2.5m
Our domestic battery bank almost blew up on a 17 hour motor sail.
We are really happy that the Victron battery chassis are very very strong.
This is the setup, domestic battery, solar, and MPPT installed in Q3 2020:
Turn of events (It may be TMI but I will give location too, to make sense of distances and daytimes):
I am suspecting the following:
Why we didn’t notice before a long full day motor trip:
Now, we installed Mastervolt 2x160Ah AGM, the only available option for us on Martinique. I am monitoring charge cycles on anchor as well, screenshots provided. You can see time of day at the top.
mastervolt charging screenshots after fresh install.zip
I attach all data I could gather in this post. “Yesterday” in the MPPT screenshots is the day of passage. “Today” is on the new Mastervolts. Even on the days before the incident, the MPPT should not have charged that much in my opinion, as we motored as well. I am confused this happened because the MPPT setting was set on the exact battery preset and the batteries are 2 years old, being actively used for about 1 year. We rarely go below 12.3. I am very happy that the Victron battery chassis held up strong and didn’t catch fire. But there's quite another mix of emotions when I think about how this could happen with an all-Victron charging and storage setup.
On our next daytime motor passages we will monitor the MPPT charging patterns closely and when in doubt switch off the MPPT to prevent overcharging.
SmartSolar_ChargerMPPT_100_50 Victron AGM.vcsf.zip
SmartSolar_ChargerMPPT_100_50 new Settings mastervolt .vcsf.zip
Your thoughts on my hypothesis? And more importantly, how can I prevent this in the future?
I have two AGM battery banks with existing BMV702 monitors (no temp sense installed). The banks are in the engine room of my boat.
I am installing an MPPT 100/30 on each bank and am a little concerned with voltage and temp compensation. The controllers will not likely be in the engine room, and will be about 10' away from the batteries.
Am I best to install a battery sense on each bank, or am I able to get the bluetooth dongle and temp cable for the BMV702's and use that somehow ?
or, am I overthinking things. The batteries never get over 35 C, that is only 0.12v of compensation needed which should not be a problem if I set the voltage parameters in the middle of the band for my batteries.