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battery capacity

Battery choice - guidance requested

So I have a small travel trailer with limited space for a battery. Have a Victron Solar controller and SmartShunt but looking for a better capacity battery than the cheap one that it came with. Draw is a handful of LED lights, USB ports etc - no need for large current draw but capacity and lifespan are king

The current battery box is 280x175x244mm so want to look for something that sits inside the same footprint

I am looking at the BAT412110081 AGM Super Cycle or the BAT412600104 Deep Cycle Gel as the two that will fit.

Which would people recommend as the better choice and which has the larger capacity?

Thanks in advance for the help!

ttttfrosen asked
Rob Fijn commented ·

1 Answer

Dumb question? Series and Parallel batteries.

Hi, this may be obvious, but I've got to ask...

I have a 12v battery bank consisting of 4x 6V, 200AH, AGM batteries.

I have 2x2 connected in series to form 12v, then these blocks of two are connected in parallel - giving a 12v system.

My question is: What is the total AH size of my battery bank. Is it simply the combined total of all batteries? ie 4x200AH=800AH

Or is it the size of only those in parallel? ie 2x200AH-400AH?

Thanks

mlsp asked
mlsp commented ·

2 Answers

what settings do I use for these results on my IP65 24|8 ?

what settings do i need to use to get these results? I am lucky if i get 10Ah charged in a day

[image]

hibrn8 asked
seb71 commented ·

2 Answers

Question About batteries

I'm struggling to understand batteries, I have a small solar installation SmartSolar 100/30, SmartShunt and Smart battery protector in exhibition trailer which is currently being used as test rig, I was using two Flooded leisure batteries in parallel 220AH effective. I Run a 3.9A (Lights and network switch) I calculate that at 3.9A (4A.) 220AH/4 which I estimate should run for 55hrs, runs for about 2hrs before the BatteryProtect kicks in.

I have purchased AGM battery for testing cos I'm looking at replacing my 2 x 110AH flooded leisure batteries with VE 110AH AGM batteries in a slightly more complex installation in the camper and wanted to do some comparisons.

I am thinking the flooded batteries are no longer serviceable although the indicator display is green on both.

The 110AH AGM battery I would estimate 110AH/4 = 27hrs running time and not even coming close to that. What sort of running time would you normally expect with such load?

What is the maximum discharge point for AGM batteries? 80% AGM and 50% for flooded, but other websites saying 50% for AGM and 80% for flooded, which is correct?

What setting for battery protect would you recommend?


Thanyou in advance




southsideph asked
marc-de-montreal answered ·

1 Answer

Charging a 12V Lifepo4 battery. Who has the key to this mystical knowledge?

I have bought a lifepo4 12.8V 40Ah battery from an unknown but experienced manufacturer for a small project, that was not too expensive to wake the kraken and dragon of my spouse.

It came at 13,33V and looked very tame.

I charged it with a blue smart ip65 12/15 charger on lithium configuration and low current (4A) instead of 15A to wake it up softly.

The manufacturer prescribes a CCCV load profile with cut off voltages of 14,6v high to 10V low. But Victron thinks that 10V is too low. They told me to cut off at 12,5V. And load with 14,2V.

I think Victron uses a more conservative load profile. Maybe to protect the battery from unballanced cells in these high limits? Is that right? Or does that have another reason? Lifepo4 is lifepo4 right?

The first charging got to 14,2V for a little while, but then very quickly started ballancing at 13.5V. Is that normal?

So now the battery is 13,5V... Which is good I guess for storing the battery? When I look at a voltage chart of 12V Lifepo4, that is about 90%SOC? I have enough capacity to do what I want, so that's ok.

But I need to calibrate an Aili battery monitor (I know it might be rubbish but I want a little experiment). So when the battery is 100%, I have to tell the monitor by pushing a button that it's 100%SOC. But how do I know whether the battery is completely charged at 100%? On the voltage charts of lifepo4 I see that 13,5V is not 100%, but the smart charger brings the voltage automatically to 13.5V, and I don't want to start messing with the configurated values...

I also have a smart battery sense, a smart battery protect on load side, a battery protect on charge side, and an mppt 75/15 for a solar module when I install everything. Some are new, some were of a previous AGM project (that's why the chargers are 15A, instead of 10A which would be preferable for a 40Ah battery). But without a shunt, these victron appliances can't determine the SOC, so they can't help me either, although they all blink very willingly.

Any suggestions to educate me on this and protect my precious investment from my erratic ignorance, and help me to set this battery monitor please?

Would it calibrate itself when the battery reaches full capacity again? Even when the voltage drops again to 13,5 V?

maartenvt asked
alan answered ·

2 Answers

Voltage to SoC chart for lead carbon batteries

Usually battery manufactures can provide a chart showing a battery's resting voltage to state of charge. I'm looking for that information for a Victron Lead Carbon 160Ah battery. I've looked at the Datasheet but it doesn't have that information.

A



JohLil asked

0 Answers

Wie kann die Kapazität auf dem Can VU GX angezeigt werden?

Hallo zusammen

ich habe 4 Smart Batterien in Reihe über eine BMS angeschlossen. Diese sind mit dem Quattro und dem Can VU GX verbunden. Auf dem Display kann ich alle Daten sehen aus die Ladung der Batterien, was muss ich einstellen um dies zu sehen?


Vielen Dank

slbike asked

0 Answers

can i set my charger to charge the Ah of a battery quicker?

I have a BSC IP65 24/8 charger for my 24V 75Ah mobility scooter (my original scooter charger is a 24v 5A charger). Problem I see is once it reaches the high end of it's charge cycle the Ah of the batteries are about a 3rd of what I need to get full milage from the batteries.
Does anyone have any ideas on how to fix this or what I should realistically expect?

hibrn8 asked
hibrn8 commented ·

1 Answer

BMV712 shows current but no history

Hi,

I have installed a BMV712 and believe everything is wired correctly, we have a voltage reading and the current also registers values but when we tap the history tab there is next to nothing showing.

The shunt is wired with a single 95mm2 link cable to the negative of a 3x110ah battery bank. That is the only wire that side. The right of the shunt then links into the boat (its on a narrowboat) and has about 3 or 4 load wires coming off it. The battery bank has nothing but link cables going between the negative poles and the positive only has link cables except the most positive battery with the loads again.

Overnight our battery went too low, we inherited the system a few weeks ago when we purchased the boat so I'm not sure if we have a duff battery bank. I'm confused how current it flowing via the shunt yet there appears to be little to no history.

When installing the shunt we ensured all loads got switched off and clicked the calibrate button. Running some loads last night showed a negative current and running the generator this morning activating the built in charger showed a positive current.

The 12v wiring consists of a split charge relay from the starter, solar input and a Freedom 20 inverter and 12v circuits.

When we purchased the boat the previous owner had the first battery feeding the positive and negative loads and some other loads on the middle and end battery. We rewired the bank so all negatives were fed from most negative battery and positives from most positive. I'm not sure if they've damaged the batteries in the way they had it wired up.

stevebates asked
dazey77 answered ·

3 Answers

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

Battery / inverter recommendation

I am going to be installing an Onan QD5000 into my race truck motorhome but also want to run off batteries whenever possible ie. overnight and whilst on the road travelling (the generator will be great for big loads i.e tools etc when needed but obviously cant be running all the time and while travelling) we will be running 230v appliances (Fridge, TV, led lighting, microwave, combi boiler, charging phones / laptop).

I am looking for recommendations for batteries to look at and how long would i should expect these to last? agm vs lithium - id rather use agm due to costs. (im not sure what my average consumption will be as i haven't finished building the truck yet) and also what sort of recharge time would i get out of the generator to the batteries.

Adding to the above, what inverter would be best suited? and also are there any other related products i will need / will be of value to have.


thanks in advance.

barclay-89 asked
DeVo Tyler answered ·

3 Answers

Multiplus Compact recommended battery capacity

What is the basis for the recommended battery bank capacity for Multiplus Compact?

The manual for the Multiplus Compact 12/2000/80-50 recommends a battery capacity of 350-1000 amp-hours. I have two 100 amp-hour lithium ion batteries, with a maximum continuous discharge of 100 amps each. That does not meet the 350 AH minimum recommendation, but my total storage capacity should be enough for my limited A/C power demands. (Running a microwave oven for a few minutes each day, and making a slice of toast).

I do not want to buy an inverter/charger and go to all of the effort to install it and find that it really does not do what I need.

jhinman asked
Paul B answered ·

1 Answer

BMV-712 capacity discrepancies

Hello, Group. I'm using a BMV-712 with a Relion 100AHr LiFePO4 battery that I purchased a couple of months ago. Both are in an emergency power battery box I built as a pandemic project. I mostly power computers, phones, and other electronics from it. I also recently acquired a Blue Smart IP67 12/25 charger to charge at 25A, and previously used a West Mountain Radio Epic PWRgate to charge at 10A.

The BMV-712 is configured per recommended LiFePO4 settings: 100Ah, Peukert exponent 1.05, charge efficiency 99%, charged voltage 14.2. What I'm confused by is the following:

Last discharge I hit 11% SOC, and voltage was 11.24 with 4.75A draw. Consumed Ah was reported as 94.5A, however. 5.5A remaining is certainly not 11% of 100Ah. From the low voltage, I'm inclined to believe that 5.5Ah was left, so why is the SOC saying 11%, and how can I align that with actual capacity?

Also, on recharge, SOC reached 100% some time (maybe 20 mins) before the charger output dropped down below tail current. The Blue Smart charger was still charging like gangbusters at 24.37A when SOC hit 100%, with voltage only at 13.92. I think there was around a 3A draw at the time. How can I set this up so SOC is more accurate?

Thanks,

Abe

abeness asked
abeness commented ·

1 Answer

Battery voltage reading at 50% capacity at C20

Hello battery experts;

I have two Victron AGM 130ah (@C20) batteries. The question is simple: What "voltage number" do I read after spending 50% capacity, assuming under normal conditions and C20 rate. I haven't been able to find a chart for Victron AGM batteries.

leventtopcu asked

0 Answers

SmartShunt with VE-Direct to RPi Venus and VE.Smart Networking to MPPT ?

I ordered a Victron SmartShunt 500A/50mV as BMS in a TinyHouse.


I have a Smart MPPT 100/20 and a Victron Inverter Phoenix 24/800 VE. Direct, both are connected to a Raspberry Pi 2 Venus with a VE.Direct to USB interface for logging to VRM online portal and onsite lcd screen for insights.


The SmartShunt will be connected with a VE.Drect cable and VE.Smart Networking.

The idea is to use a VE.Direct to USB interface from the SmartShunt to the RPi, so that with the setting: "has DC system" the total DC load is measured and also know the SoC of the battery.

Then also use it with a Smart Network to the Smart MPPT.
Like in: https://www.victronenergy.com/live/victronconnect:ve-smart-networking

In the manual: "A VE.Smart network containing a SmartSolar with temperature sensor and a MPPT solar charger, the solar charger receives the battery voltage and temperature information from the SmartShunt and uses this information to optimise its charge parameters. This will improve charging-efficiency and prolong battery life."

I want in the future use a Victron Energy Smart Battery Sense (mainly for temperature compensation) so that the aux input port on the SmartShunt can be used for midpoint voltage.
Can the Smart Battery Sense use the VE Smart Networking and the MPPT and the SmartShunt too also to use this temperature setting?


I want also make a VE.Direct cable connection to Venus and also monitor the midpoint voltage of the battery bank (cable included); 2x 12v in series. Is it possible to use VE.Direct cable and VE.Smart Networking at the same time?

How important is the temperature sensor? The batteries are below the roof, so in the summer there are possible high temps (> 35 celsius) and in the winter low temps (-5 < 0 celsius).


Other questions about settings of the SmartShunt:

  1. 7.1.1 Battery capacity
    With the Battery capacity setting (manual 7.1.1 Battery capacity) you set a parameter for how big your battery is. But there is no indication in the manual for what C-rating this setting is. Is it safe to asume that the setting is for a C20 rate?
    For my Victron Energy AGM Super Cycle battery (BAT412112081) this is than 125Ah

  2. 7.1.2 Charged voltage
    The Carged voltage setting is 0.2v or 0.3v below the float voltage.
    In the battery datasheet: "https://www.victronenergy.nl/upload/documents/Datasheet-AGM-Super-Cycle-battery-EN.pdf" the float voltage = 13.5 - 13.8
    (would be nice as the datasheet gives an one voltage instead of a range).

    Assume float battery voltage of 13.8 x 2 (batteries in serie) = 27,6v - 0.2v = 27,4v for charged voltage setting. What is better, to low or to high?
    The manual has a default of 26.4v Why so low?

  3. 7.1.10 Battery starts synchronised
    The batteries aren't fully charged due very clouded weather for continious days.
    So the best way is not to set the: Battery starts synchronise (manual 7.1.1) in the OFF state?

  4. 7.1.7 Charge efficiency factor
    The batteries are 2 year old. How te measure the current state of the battery? Maybe it must be less that 95%?

  5. 7.3.2 Temperature coefficient
    What is more importand, to use the aux port for temperature coefficient or for monitoring midpoint of a battery bank (2 batteries in serie)?


Sorry for the long posting, but I hope this makes the use of the SmartShunt more clearly for all the Victron Energy users around the world.



Marnix Keesmaat asked

0 Answers

Quatro 24/5000 with smaller than recomended 200 AH Battery Bank

I am considering a Quatro 24/5000 and have a 200 AH battle born battery bank. In the manual it says 400AH is the minimum. Would I need a soft start for this and are there any other problems that could occur from using a smaller battery bank?

mrcc11 asked
Paul B answered ·

1 Answer

SONNENSCHEIN A602 SOLAR 8 OPZV 1130 battery capacity

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

https://www.off-grid-europe.com/batteries/gel-lead-acid/sonnenschein/sonnenschein-a602-solar-8-opzv-1130?

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?

[image]

[image]

Alexander Ushakov asked
rainerb commented ·

3 Answers

BMV 700 Monitor not updating battery capacity from solar

System MPPT 250/60 with 6x 330W solar panels and 2x4x12V batteries = 48V.

Everything works fine except BMV monitor battery charge reading that starts with 100% after reset but then keeps on dropping to 0% notwithstanding full charge daily usually to float state. All other readings, e.g. incoming solar current, voltage and power seem to be accurate. All settings checked and verified electronically + internet by certified installer and also by an independent certified electrician.

During rain or clouds with partial charging the battery status is my guess only. When then charging overnight from external Lister generator the battery level is accurately updated all the way to float and 100%, so the monitor does work for external charging.

What must be changed so that the monitor updates the battery charge from incoming solar power and can tell how much capacity is still available?


ajsmuts asked
Matthias Lange - DE edited ·

1 Answer

AGM Super Cycle Four Bank Significant Reduced Capacity

I installed 4 x 145ah Super Cycle AGM's 18 months ago (Still under Warranty). They were marvelous giving us days service before needing charge. Usual discharge to 12 volts.

This week suddenly we have extremely low capacity and using our normal charge methods (Sterling shorepower 40A charger set to AGM) or the boat engine alternator. Absorption charging at 14.6V and 14.4V respectively. The shorepower drops to 13.6V for float.

I only seem to be able to get 50ah storage into batteries (using NASA Marine Clipper BM2 battery monitor) and then the charge current is down to 1 or 2 Amps within 4 hours or so.

Why would this have happened to four new batteries and so suddenly?

Help very much appreciated.

tom-slattery asked
billknny edited ·

3 Answers

BMV 712 won’t accept battery capacity > 999Ah

I’m trying to set the battery bank size through the app for my BMV 712, but it won’t accept values greater than 999Ah. Any values above 999Ah reverts back to just 1Ah when tapping accept. Is this a bug or limitation of the app?


For background, I have 12x Lion UT 1300 batteries, each have 105Ah of capacity for a total of 1260Ah. They are wired 4s3p for an operating voltage of 48v.

Any help is greatly appreciated, thank you!

scott-bull asked
Guy Stewart (Victron Community Manager) answered ·

3 Answers

Does this graph indicate my solar array is not keeping up with usage?

Hi, I've attached a screenshot of my VRM dashboard for the past 30 days for my remote cabin off grid system. I've had to reset 100% SOC a few times once my LionEnergy battery bank (2 - 12V in series 105ah) batteries are showing 28V (for some reason the BMV never seems to show them as 100% charged...i have to rest them when they get to 100% 28V). Those resets are indicated by the peaks in battery SOC at 100% in image. I only leave on a refrigerator in the cabin when I'm not there and have it on a timer to turn off between 10PM-1AM and 2AM to 5AM. Does this graph indicate that the 3.16kW energy harvested per day isn't enough to keep up with the draw/load? I have a 1.46kW array (using victron MPPT and inverter/charger).

[image]

lo-g asked
billknny answered ·

3 Answers

a big thank you and a battery question

i would like to thank everyone who spent time answering my stupid questions and helping me out to fix my solar problems. i changed my solar panel setup from 12v to 24v, got a new battery and now i harvest about 850 wh per day.that's a huge improvement that allowed me to power a fridge among other things (a word of advice for off-gridders, buy a dual function chest fridge, huuge difference form ordinary ones) .

a question about batteries: since a battery is considered to be charged when >12.8 or so, what if the battery is charged at 13v or more? how charged is considered? my battery is at 12,64v every morning, what state of charge is that considered to be? (gel vrla battery)

cheers

greekgeek asked
wild-thing answered ·

3 Answers

Settings Depth of discharge offgrid

Hi

My setup:

Multiplus 2 5000

Byd b box pro 13.8

Im searching for the settings for depth of discharge setting. I can only find it at ESS but its not allowed to activate it running an offgrid version

I would like to shut down the system at 15% and reactivate the inverter at 18%.

Thanks it andance

melonentier asked
melonentier answered ·

2 Answers

Inverter maximum battery capacity

Could someone be so kind as to tell me the maximum battery capacity that both the 48v 3kw and 5kw multiplus inverter charger can handle? (Intend I’m using Pylontech 48v us2000).

merlin asked
merlin commented ·

2 Answers

Lithium SuperPack Battery - C/Ratings

I’d like to know the C/20, C/10, and C/5 ratings for the Superpack 200AH battery model.

I need this info for correctly calibrating my Simarine Battery Monitor to get the right SOC.

I currently have (x2) batteries in parallel, equivalent to 400AH total, but plan to add more later.

octafish asked
octafish edited ·

2 Answers

Battery Capacity for Multiplus 5000

Hello, I had a question: can I use the Multiplus 5000 24 v with a 300 Ah battery? The manual indicates the recommended capacity of 400-1400 ah, what does it threaten and did anyone come across this situation? Battery connected via lunx ion BMS and DVCC enabled.

anton859 asked
anton859 commented ·

1 Answer

What voltage should the Victron lithium Battery cells be at full charge?

I got some good energy today based off this image

[image]


Looks like my mppt charge controller never left bulk charging however.

[image]

I just got myself some lithium batteries and have some questions....

[image]

what should the individual cells be at full charge? Is there a way to know how much capacity % is left in the batteries? And why did my mppt charger never go into a float mode to tell me batteries are full..... did my batteries not fully charge today? Is 5+ kwh enough to charge 2x 200ah batteries??


I'm trying to determine if I'm charging the batteries correctly, and how to know basically how much energy is needed to be full, or how much energy is left before empty on the batteries.


pic below is battery parameters on the mppt solar charger.

[image]

nico asked
Justin Cook - Bay Marine Supply USA commented ·

2 Answers

My Victron app is showing my production at 1-2wh a day when it used to produce around 1.5kwh per day.

[image]

It’s summer time so I’ve been leaving my refrigerator running all day for the last couple months. I bought my truck into the shop for a check engine light but when I brought it back home the Victron app suddenly showed that instead of producing the normal 1.5kwh of power a day, it was only producing 1-2wh a day. Even with nothing running, I would typically produce 10-20 wh a day. After two weeks of having everything completely off, I broke out the multimeter and began reading everything. The Victron app is showing my charge as being in the float state but my multimeter is reading the batteries as only 12.2v with solar collecting 35-36 pv and sending 13.7v to the battery. i turned on the fridge to see what about my battery power and it dropped to 12.1v with the Victron box remaining in the float state. I then turned on the truck and began charging the batteries through the truck batteries and raised the batteries to read at 12.9v however with the fridge running, after about 30 minutes, the batteries were back down reading at 12.4v. Still the Victron box is indicating the float state of charge.

Has anyone else had this issue or can tell me if it is the batteries that need replacing (I have two 350amh batteries connected to be 700amh at 12v) or if the Victron box is the issue? Possibly the box thinking it is in float state means it is not delivering any voltage to the batteries so they are depleted. Or the batteries need to be replaced because they can’t hold a charge.

This all started when I dropped my truck off for a check engine light. I left it at the shop for 3 days during which time they may have had it inside and outside since it shows it made some solar those days. I’m worried maybe it was inside too long so the batteries might have died and now they don’t make their full potential anymore. Or possibly the shop flipped a switch or a wire they didn’t mean to touch. When I asked, they didn’t recall hitting anything unrelated to the check engine light but I wasn’t there so anything could have happened over the 3 days. The Batteries are expensive so I’m hoping to fix other things before replacing the batteries.

jlshattuck asked
Daniël Boekel (Victron Energy Staff) commented ·

1 Answer

Probleme mit Victron GEL Batterien 220 Ah

Hallo allerseits,

ich habe Probleme mit 2 Victron GEL Batterien 220 Ah. Die wurden im Juli 2018 in einen Wohnwagen eingebaut. Seit März 2020 haben beide Batterien nur noch eine Kapazität von ca. 10 %. Getestet wurde mit einem professionellen Batterietestgerät, das über mehrere Tage definiert die Batterien auflädt und entlädt und dann die Kapazität berechnet.

Beide Batterien haben jeweils einen Victron Solar-Laderegler 100/50 und ein jeweils eigenes Victron Ladegerät 12-25. Sie sind auch nicht hart parallel geschaltet, sondern über einen Victron Combiner zusammengeführt, so dass ich Querströme ausschließen kann.

Die Solaranlage liefert 850 Wp, so dass immer genug Nachladung zur Verfügung stand. Der Wohnwagen wird ganzjährig bewohnt. Solange der fest steht (98% des Jahres), hängt der am Landstrom, so dass auch die Victron Ladegeräte die Batterien stets voll gehalten haben. Es hat bei einigen wenigen Fahrten im Winter mal eine Entladetiefe auf ca 70% gegeben, also weit entfernt von den 50% entnehmbarer Kapazität. Gemessen wurde dies über zwei Victron BMV.

Jetzt hat mir der Händler mitgeteilt, dass jeder Kalendertag einen Zyklus darstellt, und die Victron GEL Batterien nur eine Zyklen-Lebensdauer von 600 - 700 Zyklen haben. Das würde ja bedeuten, dass Victron GEL Batterien ganz generell nicht in Solaranlagen tauglich sind, wo sie jeden Tag mit Sonnenaufgang einen neuen Zyklus beginnen.

Wer kann mir was dazu sagen? Alle 2 Jahre zwei neue GEL-Batterien von Victron zu kaufen ist mir zu teuer. Wenn die auch nicht länger halten, als billige Batterien vom Discounter, warum dann Victron?

Nette Grüße

Gode

gode-re asked

0 Answers

Are my batteries past their best

I have obtained, at a sale 4 x Victron Gel 12-220 batteries connected to a Quattro 24 volt 5000 va inverter charger. I know for a fact that the batteries have not had a charge since August 2017. I tested the voltage before connecting them up and they were all showing 12 plus volts

I have connected it up and set it up correctly and left it charging from the grid for 24 hrs at max 10 amps AC, connected via a 13amp plug

I'm looking to sell the equipment so obviously want to know that its all working. The Quattro is working fine and I connected the output via a kWh meter to a 13amp socket and pluged in a 1kw fire. The meter registered 1.8 kWhs before the inverter shut down which I think sounds very low ?

Because the batteries haven't been charged for so long are they essentially only good for scrap ?

If the batteries are, as I suspect past it is there anyway that they can be refurbished ?

Thank you for any advice.



stuart-houghton asked
stuart-houghton answered ·

2 Answers

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