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My Agm Camper life duration

Good evening, this is the story of my Agm battery for cyclic use.

We have been living in a camper for almost 3 years.

The battery is almost exhausted.

I mean, with loads of 2/4 amps it is still good.

But with a load of 15 amperes (C 0.15), it only returns 25/30 ah.

I took a test with the recently purchased victronenergy smartshunt.

Is this normal after just 2 years and 8 months of continuous daily use?

The battery has about 1000 light cycles.

It discharges daily at approximately 12.5 / 12.6v.

He only suffered 3 or 4 deep discharges.

It is always charged at 100% every day, from a 300watt panel with a 30 amper mppt regulator.

The charge is set as follows:

- maximum current phase

- absorption phase of 90 or 120 minutes at 14.5v

- floating phase at 13.7 / 13.8v.

- temperature compensation at -3mV / C / 2V (about -18mV / C)

The working temperature has always been between 15 and 30 degrees. So very good.

The charging parameters are correct right?

On the battery it is written to charge at 14.7 / 14.9v in cyclic use and 13.8v in buffer use.

But my cyclic use is very light, almost a buffer use.

So I decided that 14.9v is too much.

Also I have seen that charging at 14.5v, the tail current is reached at the same time as at 14.9v.

In few words, monitoring the absorbed amps, I noticed that 14.5v equals 14.9v.

So I preferred 14.5v because it generates less gas.

The battery is designed for 1000/1200 discharge cycles (70%).

It actually has less than 1000 cycles at 80% now.

francesco asked
francesco commented ·

6 Answers

Batteries do not fully charge with my new Victron Charger

I have 2 deep cycle 102amp batteries almost brand new.

I recently purchased 2 x 15amp victron chargers for my batteries but when i plug the chargers on they charge the whole night and stay on float which does not show fully charged on the app.

Look like they charging 80%. Bec the scroll does not show full.

Why is this so? Am i doin something wrong?

Why is it taking so long to charge 102amp batteries?

ash-king-7 asked

0 Answers

Battery combiner limiting current

I am searching a current limiter between the batteries. I have a battery set including slipring between sets. So I need to protect the slipring. May be I can add a cyrix ct-120a before slipring. I expect that if charging current is over 120A, cyrix ct-120A will limit the charge current to 120A by making voltage low. Is it possible?

ihanci asked

0 Answers

what topic shows if I'm charging or discharging batteries ?

Hi All

How can I via mqtt determine if Im charging or discharging my batteries.


georgelza asked
georgelza answered ·

1 Answer

Please help with my Victron SmartSolar MPPT 150/ 60 TR


I have a battery bank (48V) consisting of 8 x Fullriver DC400-6 (

In the system I have a Victron Smart Solar MPPT 150/60 TR, and I can't find any Battery preset that fit the Fullriver batteries:



I really need help to get this right, and believe "user defined" and "Expert mode" must be set.

Since I obviously are no expert, I need help with the following sections (in the app and battery settings):

- Bulk

- Absorption


- Voltage compensation

kennethknashaug asked
michelg commented ·

1 Answer

Victron lead carbon 106Ah charging time

Hi How fast will Victron Lead carbon charge ? Leoch claim 90mins to 90% is Victron similar ? would rather buy Victron but can see any reference to faster charging time than std AGM

Simon Phillips asked
Matthias Lange - DE commented ·

3 Answers

Centaur 12/40 Charger

I am charging 3 crystal batteries in parallel with Centaur 12/40 charger. Crystal batteries require a higher charge. Will I achieve 80 amps if I connect a second circuit from the charger?

savn asked
Paul B answered ·

1 Answer

Charging a 12v battery from 48v system

I have a 48v system and what to charge a 12v removable battery. But don’t seem to exist an Orion DC-DC Charger 48 to 12v. Any tips on how to accomplish this?

I was thinking if it would be possible to just buy a small MPPT like 75/10 and feed 48v as PV in and the charge the 12v battery through that.

Or should I buy an Orion DC-DC Charger 12/12 and connect it to my existing Orion DC-DC Converters output of 12v

I would rather not use the Multiplus for charging the 12v battery as we usually turn it of when we are not there.

PV 3500w

SmartSolar 250/100


Multiplus II 3000 35-32

2 x Pylontech US2000

2 x Orion DC-DC Converter 48-12/9A

Mikael asked
luckybeanz commented ·

3 Answers

Can I simultaneously charge 2 separate batteries with one solar blanket?

I have a 200W solar blanket charging a 120AH AGM battery in my caravan using a Victron SmartSolar MPPT 75/15.

I also have a 100AH LifePO4 Battery in my vehicle to run the portable fridge. I can charge this from the same solar panel using another Victron SmartSolar MPPT 75/15. But if the caravan battery is charging, I have to disconnect the solar blanket lead and connect it to the charge controller in the vehicle to charge the LifePO4 battery.

Is it possible to split the cable from the solar blanket to then run cables to both of my Victron charge controllers thereby charging both batteries simultaneously?

So, in summary, I have 2 charge controllers, 2 batteries and one solar blanket and I want to charge them both at the same time.

Forgive my ignorance of 12V stuff!

Clive Atkinson asked
Trina edited ·

4 Answers

Blue smart IP65 12V 10A and Lifepo4. Calibration needed?

Hello, I’ve bought a 100Ah 12V lifepo4 battery with a JBD Bluetooth BMS. I used the battery for the first time and I discharged it down to 30Ah. Then, I used a Victron Energy IP65 smart battery 10A charger with factory Lifepo4 settings. the bms shows about 9.91 A of current being charged into the battery during the charging but, after only 4.10 hours the charging cycle is completed. The Victron connect app show that 44Ah were charged and the BMS indicated that the battery is 100% charged (100Ah) which sounds strange to me... if the battery has a capacity of 100Ah and with 30Ah still in it it should have charged 70Ah in about 7hrs. So, either the battery is undersized, or the charger is not properly calibrated for the battery. Is there anybody else having this kind of problems using Blue smart charger with a lifepo4 battery ??? Thanks

gerardo-santucci asked
klim8skeptic commented ·

2 Answers

Best float voltage and absorption time ("Energy Unlimited book)
  1. good morning, I have read (not all given my difficulties with English ....) the book "energy Unlimited", and I have a couple of questions.
    I live in a camper with a 300 watt PV system, 30 A mppt regulator and 2 service batteries (1 + 1 or in parallel, Agm 100 ah and cheap start battery 100 ah) and an engine battery.
    The AGM is almost 3 years old and 900 cycles and still works almost at 100%, the start battery for the services was replaced after 2 years and 700 cycles with another similar one.
    I think I use them in the best way:
    Absorption at 14.4v and floating at 13.7v, with temperature compensation with sensor on the battery.
    The average working temperature is 25 degrees Celsius in the Canary Islands.
    My Tracer 3210 regulator is great but has an adjustable but fixed absorption time. Default to 120 minutes.
    However, I copy the algorithm of the victronenergy regulators.
    If I discharge the batteries in the evening, for example Vb> 12.6, I set 1 hour of absorption.
    If 12.2 <Vb <12.6, I imposed 2 h of absorption, etc ...
    The average discharge each night is at 12.55 v.
    However, while reading the book, I had some doubts about the float voltage.
    The book says that a 13.8v float for a long time damages the batteries due to excessive gasification ... especially the VRLA batteries.
    My batteries on average float from 12.00 / 13.00 to 17.00 / 18.00 (more time in summer, less time in winter).
    The alternator supplies 14.2 v and I connect it to the service batteries with victronenergy cyrix, almost only at night while traveling or traveling in the rain, for the fridge etc. So it's not a problem.
    In your opinion, what is the best absorption voltage compared to the usage data I have provided?
    For now I have lowered from 13.8 default to 13.65.
    If I took it to 13.2 / 13.4 v would I get some advantages in battery life or some disadvantages?
    Thanks and I apologize for the length.

francesco asked

0 Answers

Equipment needed to charge batteries from multiple sources

I'm wanting to build a charging system that can be charged from just about anything. I'd like to be able to use solar,shore power,a generator, and to be able to plug into my truck when moving. Any idea what equipment I would need?

shanel2482 asked
ess-and-solar-solutions answered ·

1 Answer

Wiring a Victron DC-DC charger - HELP!


I want to install an Orion DC-DC Smart 12/12/30 in my van. It would be connected to the starter battery under the driver's seat all the way to the back of the van on the opposite side (passenger side). My question is, if I run the wiring up to the ceiling, to the back, and back down, the distance would be 10m one way (2m up, 4m to the back, 2m across, 2m down), if I run it through the floor the distance would be around 6m one way (4m to the back, 2m across). Keeping in mind derating factors (running continuously for more than 20m, being in a conduit or insulation), I've calculated I need a 0awg wire (50mm), which seems way too big. I don't know if my calculations are wrong? Victron recommends a minimum cable gauge of 16mm for a 5m distance (i'm guessing this would be one way?).

I'd appreciate any help!! Thank you

palomafts asked

0 Answers

Charging BYD 48V batteries with a 48V alternator

Is there any Victron products available that will allow a 48v alternator as an alternate generation source to an existing 48v Victron off grid system and connect to the BYD CAN BMS?

nrre asked
safiery answered ·

2 Answers

Victron Energy Deep Cycle AGM 60Ah - First Charge

I bought a Victron Energy AGM Deep Cycle battery, 60Ah, for a small solar set-up.

I received the battery boxed, but there is not manual/leaflet with it.
I wanted to understand what to do about the first charge, and if it is needed?

In the solar system the solar controller is a Victron MPPT 75|10.

I can charge (if needed) the battery at home before installing it in my solar setup. But I only have an automotive charger I can use (CTEK 5.0).

How do I proceed?

Thanks in advance.

er-minio asked
er-minio commented ·

2 Answers

Multiplus 24 3000 over charging

Hi multiplus 3000 in yacht from new. Currently have new Yuasa dcb batteries 240ah, 2 banks of 4. This happened with prev battery bank also. When back into marina and re connected to shower power and charger turned on about 4 to 6 hours later co2 alarm goes off. I believe this is activated by the batteries gassing. If in the vicinity of the batteries at this time there is a smell. When we looked at the dim switches on the charger all are set to off. We are wondering if number 5 dim switch which relates to Adaptive charging were turned on might the charger sense the batteries state of charge and not overcharge?

Please go easy I'm clueless when it comes to electrics

sylvana asked
jwfrary answered ·

3 Answers

IP 22 charger

When connected to shore power can you have the IP22 charger connected to simultaneously maintain the battery as well as provide 12 volt power to lights, fans, pumps and other small loads over extended periods of around three months. In such a scenario do you select the “charging or load“ function via the Bluetooth app

cheers Wobbly 1305

wobbly asked
Mark answered ·

1 Answer

BlueSolar MPPT 75/15 - PV power jumping up and down to zero in bulk
  • BlueSolar MPPT 75/15 Charge Controller 12/24V 15A
  • 2 * Solarmodul 100 Wp 52 x 115 x 3,5 cm monokristallin
  • 2 * Varta Professional Dual Purpose AGM 840 095 085 (LA 95)
  • Pössl Camper

Dear Victron fans,

After the last update of the firmware to 1.50 and with factory values, I noticed a strange bulk behavior: The curves are rising and falling (jumping) in seconds, sometimes down to zero (see screenshots). As a result, it took a long time to charge the battery. Oddly enough, the charging process seems to be normal when the engine is running and the battery is being charged (at the same time).

  • does anyone know the phenomenon?
  • maybe it has something to do with the upate?
  • maybe this is normal?



  • the engine is off


  • the engine is running


hek asked
mvader (Victron Energy) commented ·

2 Answers

Smart Blue Power IP22 Charger: Connecting batteries and charging

Dear All,

I have a Smart Blue Power IP22 Charger 24v/16amp for my boat engine. I need to charge a 24v system consisting of two AMG 12 batteries (vestus marine batteries). The batteries were delivered with a voltage of each 14.2 volt and the system showed me (using a multi-meter) 28.x volt. It is my second pair of batteries having just lost the first once (chronically discharged).

Now, as I have used the new battery a bit, it shows me 24.6 volt, meassured with the multi-meter. When I connect the Smart Blue Power IP22 charger and look into the App, it says 28.x volt, but 0.0 amp., So, I'm afraid I have connected the chrarger wrongly or that it is broken (?).

Unfortunatly, the guideance in the manual is not sufficient for me as it only shows the side of the charger, not the batteries. As I was unsure whether I have connected the system in the right way, I changed the connectons, but the system still showed the same values. I would have expected that it would show me an error if I connect them in the wrong way (?).

Through this questions may not be difficult for most of you, I'd be glad to understand whether we should already see amps flowing, or should this only happen when the batteries has reached a discharge below 24v? Can I find better information on how to connect the system and is the above written (connection in different order does not change anything) an indication that the system is defect?

Thank you very much!


olli asked
tdcgoofy commented ·

2 Answers

Charging characteristic Multiplus 12|1200|50 and LiFePO4

Charging switches on and off constantly.

Good news is, that the charging of my 3 x 150 Ah LiFePO4 batteries via 230 V works. They are fully charged. However, even on low consumption (i.e. 7 A) the Multiplus would switch the charging function on and off literally every 2-3 minutes when 230 V input is connected. Thats annoying.

I have set the DIP switches to LiFePO4 Battery (ds2=off, ds3=on and ds6 for saving of settings).

Is there any option I can activate in order for the Multiplus to accept a certain discharge before bulk charge switches on again?

lejouz asked
lejouz commented ·

2 Answers

Centaur vs multiplus

Hi guys

Victron centaur vs multiplus?

Guys please advice, a little urgent, the amazon delivery of my 12v100a centaur is on its way, i could refuse the package.

Im thinking to change to a multiplus charger inverter 3000

I want to be able to adjust the charging current coming out of the unit, i havnt decided yet on a lifepo4 battery bank but it seems they need lower charging currents, 40-60a.

With the multiplus i will be able to lower it down in settings? For example if its rated 12v 120a, could i set it to 50a to each of the 2 outputs through the settings menu?

The centaur is a simple machine with no settings?

Doron Azulay asked
jwfrary commented ·

1 Answer

EasySolar 48/5000-70

Good Day, I have as above an EasySolar 48/5000/70 unit. Connected to 6 x 48v 215Ah Battery Banks. I changed the Charging Settings on VE.Config to 70 Amps and Clicked on the Weak AC box. I still only get 50Amp charging to batteries. Why would this be? My batteries are at 82% SOC and when I start the Generator Set, Unit that provides 24KW it remains at 50 Amp charge....

Please Help.....

jp-vermeulen asked
JohnC answered ·

1 Answer

How do I enable Synchronized charging for BlueSolar MPPT?


My question is if there are known problems with synchronized charging between Bluesolar and Smart Solar devices (in my case both mppt100/50)?

I expanded my system with additional panels and a new smart solar mppt 100/50 charger. I already had a Bluesolar charger, also an mppt100/50 with a BT dongle. They are connected together over the VE Smart networking (Bluetooth) for the purpose of synchronized charging. There is also a Smart Voltage/Temperature sensor attached.

As far as I can see the synchronized charging does not work at all. The switch together into absorption mode, but apart from that they behave totally different. Despite having the same settings, the absorption/float times differ sometimes quite drastically.

I have compiled a very detailed description of the setup and the problem. It can be viewed here under this link.

danmannale asked
Thiemo van Engelen (Victron Energy staff) commented ·

3 Answers

Off Grid Installation AC Coupled Fronius Disconnects with Back Up Generator Is Switched On


I have installed Quattro 8kva with 8kW Fronius AC coupled with a CCGX 800Ah of batteries. It is an off grid installation with PV inverter assistant on. When I switch on my generator and the Quattro synchronises with it the Fronius inverter disconnects and says error code 107 which meant no grid.

My generator is 4.5kVa but the wave form is poor so I have limited the current to 13amps and I have used the Weak Ac function

From what I have read about the off grid systems in victron literatureI thought that the Quattro would control wave form so the Fronius and Generator could both power the loads and charge the generator.

But from reading other posts it seems the Quattro is just passing the generator AC frequency through and it’s too messy for the fronius to sync.

Is there a way to allow my generator and fronius to work?

tunde-olaoye-1 asked
jon-lowbank answered ·

4 Answers

Can I charge a 12V directly from 24V with an Orion?

I want to charge a 140 Wh gel battery with an Orion 24-12/25A from a 24V system. Would direct be OK or should I use a MPPT charger in between to regulate? What voltage is best to set the Orion to? Anything else I should consider? Thanks

marcel asked
ahjwinth answered ·

4 Answers

Should a/c coupled charge a battery in ESS mode?

Easysolar II GX not charging from a/c coupled PV. How can stop it exporting to the grid and make it go to the charger. Setup is ESS optimised with battery life using Pylontech US2000 and a current transformer on the incoming grid.


gat asked
Alexandra commented ·

2 Answers

Initial charging of smart litium with agm charger

can initial charging of smart litium be done with standard agm charger.

mhuusko asked
mhuusko commented ·

1 Answer

Basic 100ah Campervan setup help - Is this correct?

Hello everyone,

I've spent a good while trying to learn what will be required for my setup and would really appreciate someone answering a few questions and taking a look over my proposed setup.

I will be using the 100ah Lifepo4 smart battery, this will be charged using the Orion-TR Smart DC-DC Charger via the Alternator. The Battery will power both DC and AC loads through the Sargent EC155 and the Victrons Phoenix Inverter; where im stuck is working out whats actually required in such a small system?

I have a decent understanding of 12v campervan electrics, however it seems it isn't quite so simple when using Lithium Lifepo3 batteries - I've attached a basic diagram of what the system will include on the Victron side (please ignore the direction of arrows).

The build will include basic 12v appliances such as a 12v fridge, water pump, LED lighting and a small inverter - most small appliances will be ran via the Sargent EC155. Heres where i'm struggling:

1- The van will include a 240v hookup which will run through the Sargent ec155 powering plug sockets and charging the leisure battery - Will this charger be sufficient for Lifepo4 batteries?

2- Do I need a Smart Battery Shunt if I'm using Victrons Smart Lifepo4 batteries?

3- What size fuse will I require for a 100ah Lifepo4 battery?

4- Am I right that the Mini BMS controls (on/off to protect over/under voltage) the charging side of the system and does the same on the load side via the Battery protect? I'm a little puzzled as to how this should be wired up to operate the inverter via the remote function; I've seen people using relays etc.

5- Can I run both the Waeco fridge and all other 12v appliances through one battery protect?

Thanks in advance,



ukcampercraft asked

0 Answers

SONNENSCHEIN A602 SOLAR 8 OPZV 1130 battery capacity

I installed SONNENSCHEIN A602 SOLAR 8 OPZV 1130 with QUATTRO 48/15000/200-100/100.

According to its manual, battery capacity C10 = 908Ah and C100 = 1096Ah. Accoring to label on the battery, its C120 capacity is 1131Ah.

What number is supposed to be input to VE configure program? C10, 20, 100 or 120?



Alexander Ushakov asked
rainerb commented ·

3 Answers

LG Resu 3.3 charging to 100% instead of 98% and switching off

Hi, One of my customers (BE) experiences since several months some security switching off battery that is charging up to 100% what is not normal as I know...and it was no problem last year at the same season and nothing was changed except GXCC OS version (auto upgrade ON). Material = Multigrid 3000 (BE) + MPPT 150/70 + 4200kWp + LG Resu 3.3.

Site name : 4,3kWc+3,3kWh Belgique Anhée

MPPT150/70 set with 57.00V on Absorbtion and float voltage. Same for Multigrid set with VEConfige + MK3. DVCC is on. Current limiter = 18A SVS & STS = ON Shared SCS = ON.... but can you give me info about good settings for LG I did not find in your battery compatibility file web page.

If you have idea for the problem , Thank You


rodolphe-yonnesolaire asked

0 Answers


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