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battery connection

How best should 5 x 3.5 US3000 Pylontech and 10kVA MP II connected?

Hello everyone.

I have an off-grid customer who did a DIY install of 5 x 3.5 US3000 Pylontech batteries and a 10kVA MP II. He used the Pylontech 2m battery cables to the inverter and correctly followed the Pylontech connection instructions. I however advised him to rather use a suitable busbar setup and cable rated well above the 120A of the supplied Pylontechs given the high rating of the charger. He started charging his batteries at the 140A 10kVA 48V MP-II capability, because the Pylons shows he can do 185A so he took it very literally.

I much stand by my advice, but will value a sanity check from any large system installers out there.

Thank you in advance.



ejrossouw asked
Matthias Lange - DE answered ·

1 Answer

Should use resistor to preload capacitors on multi ?

The sparks caused when bolting the cables, could they damage the inverter/batteries?

Should I use a large resistor to precharge the capacitors on the inverter or this is for big models?

If prior to connecting the batteries I switch for a couple of secs the AC-IN and turn off prior connecting the batteries, would this charge the caps?

I have a Multiplus 2000/24

Minas Papageorgiou asked
rickp answered ·

1 Answer

Anderson Power connector 4/0-large current

Has anyone used Anderson Power connectors to connect battery packs to a bus bar?

3/0 or 4/0 gauge wire.

I would like to be able to remove a battery without having to unscrew lugs.

Thank you, Jeff


The larger "350".

jerothle asked
dannyclark commented ·

2 Answers

AGM charging current selection on Dolphin charger

Hello everybody,

I have 3 x 12V 95Ah AGM's in parallel and plan is to charge the bank with Dolphin charger when connected to shore power.

Which of below modes you'd choose for setup? If I got it right, "Calcium lead" mode would have the right voltages? I'm planning to use one of the posts of charger to connect the starter battery which is a traditional 12v battery so it would need the "Wet & flooded" option but which one you see would be a best option for this combo with 3 AGM and one wet battery?

Cheers, Mikko



mikko-juuti asked
wkirby answered ·

1 Answer

Dual Battery Connection with True Battery Isolator

When using disk batteries and a True brand battery isolator.. Do you hook the charger too the main battery or the auxillary battery?

And, will both batteries charge and be kept maintained?

Thank you

txdoc asked
markus answered ·

1 Answer

Power supply mode in permanent install


My ip65 22/10 Bluesmart charger is permanently installed in a camper, please can anyone tell me if I switch to power supply mode while connected to 230v and use 12v lights etc will this be ok or should I leave the charger in charging mode and use the 12v lights etc. Does the power supply mode mean the leisure battery will not be being drained.

Thanks in advance

tw8 asked
Kevin Windrem answered ·

1 Answer

Multiplus 24/1600: Which diameter for battery connection?

Hi all,

I found different information in (german) datasheet and manual for the Multiplus 24/1600 about the diameter of the battery connection.

The datasheet says 35mm and the manual says only 25mm.

Which information is correct?

And if someone knows which diameter is necessary for a connection of about 2m it would be good to know as well.

Thanks in advance :)


mad asked
alan edited ·

2 Answers

Can I connect two 24v phoenix 3000vac inverters on single 48v battery bank?

Is it ok to hook 2 inverters each take on (first) 24v and (second) 24v in a 48v battery bank? The two will combine to create a 240v split phase.

lynhnn asked
wkirby answered ·

1 Answer

Doubling up battery connections for Quattro install

Getting ready to install a 12v quattro system with 6 batleborn batteries via a Lynx shunt and distributor. I see that the Quatto calls for the 12v inputs to be doubled- should the 4/0 cable be doubled all the way to the battery connection points, or just coming from the Lynx to the Quattro?,

pau-hana asked
jwfrary answered ·

1 Answer

Battery cables/fuse for Victron LifePO4 Smart and Multiplus 12/3000

Just getting started here, so apologies in advance if the answer is obvious. The Multiplus manual suggests double 50mm cables and a 400A fuse on the main battery connection. If I calculate my maximum current draw from the battery due to both DC and A/C loads, it's way less than this. I'm assuming that the charging current to the 12V 200AH LifePo4 battery is less than or equal to the recommended max of 100A. So why such large cables and fuse? Could one not size the wire and fuse based on what's actually going to be used? In my case, I would think 150A would be more than enough.

But I'm probably missing something...

robertsonics asked
cleaver answered ·

3 Answers

Cable Lengths When Wiring Each Battery to Lynx Distributor

I’m considering wiring each of my 4 LIFPO batteries to the Lynx Distributor separately. I’m wondering if anyone with experience has thoughts on the following:

1) Do the wires to each battery need to each be the exact same length? I know it’s important in traditional parallel wiring for wire lengths to be equal, but haven’t seen anything on this when wiring directly to the Distributor.

2) Is battery balancing impacted with direct wiring as compared to traditional parallel wiring each of the batteries together with diagonal positive and negative terminals wired to the Lynx Distributor?

3) any thoughts on cost efficiencies of wiring each battery directly to the Lynx Distributor? Smaller wires, but more fuses, etc.

josiahjlee asked
Alistair Warburton commented ·

2 Answers

Is it possible to charge two different 12V batteries wired in parallel?

I have a simple Solar setup, using MPPT 75 I 15, a Siemens Solar Panel M110-24 and a 12V110Ah battery.


I want to add more battery capacity, and I'll buy a new battery, like 12V200Ah, but it'll be different from age and capacity, I was wondering if it's advised to connect them in parallel (same length cable size)?


if not, what's your advise? thanks in advance,best regards.

ant13 asked
ant13 commented ·

2 Answers

BMV-700 : is my connection good or bad ?


Hi, new in electric connexions, i wander if my connexion is good or bad ? Thanks for your kind help

mammouth asked
Alexandra commented ·

2 Answers

SmartSolar with ungrounded batteries


I am busy commissioning an ESS system using a Multiplus II, SmartSolar and Pylontech batteries. The latest draft South African regulations recommends that the battery terminals be left floating (i.e. neither + nor - are grounded), whereas Victron recommends that the negative battery terminal be grounded.

Because of the potentially large fault currents that may be involved (and thus requiring thick cables) I am tempted to cut costs and effort and not ground either battery terminal, leaving the batteries floating. (The chassis for the SmartSolar and batteries will still be grounded, as well as the PV array frames.)

Is this configuration supported by the SmartSolar? Can I expect any operational issues if I go this route?



pleriche asked
Guy Stewart (Victron Community Manager) answered ·

2 Answers


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