Wiring 12v Batteries in Series or Parallel + Charging Tips!

[@DanRichardFishing]

I'm back! Hope you enjoy today's video and congratulations to @King78Cobra on being the next name draw in the 30 Days of Baits contest! Will winner #3 finally claim their prize?! DM me on Instagram or Facebook and it's all yours! Thanks everyone, love you guys!

[@vulvo4763]

Thank you

[@shamsu-deenmusah6838]

How many battery's will you need for 3000watts inverter to power 1kv transmitter pls

[@melharth667]

I have a 23 foot tahoe deck boat. The batteries were originally in series for the trolling motor. Trolling motor has now been abandoned. Do I still need three batteries? Two? One? I am assuming I will now wire them in parallel, which would give me all day live well and stereo. One cranking battery and two deep cycle, which I just bought new. Is two enough? Thanks so much!

[@stogie0608]

Who knew Steve-O was into this kinda stuff.

[@DanRichardFishing]

🤣🤣🤣 this is what I do when I'm not working on my jackass films 🤫

[@kennethgrimes5494]

Looks like him ,he does.

[@nonliberal9642]

Lmao...I cant unsee it😂....good video though, answered all my questions....

[@TheF150flareside]

I thought same thing

[@crakilldurmom]

And has been hitting thr glorious house of gains

[@affemannen13]

Hands down one of the best in-depth educational videos about serial and parallel wiring of 12v batteries out there. Excellent job, great content and thank you!

[@Vexeronix]

Thank you for this INFORMATIONAL GUIDE, I tried to put packs of AAAs in series when I tried to do parallel.

[@lordlouiseadrielle]

Just finished wiring two of my trolling motor batteries that are in parallel. I also have a dual bank charger, this video helped me all the way through my wiring process. Now, I can go trolling around the lake for days! Thanks again Dan

[@YouLookinAtMe-Bro]

4:55 😂 Made me jump as soon as I saw that positive of the trolling motor headed that way, after attatching the negitive first. I saw my neighbor do the same thing just today. Lol I'm sure we've all done it. Be safe all!🙏

[@HowardMcCoy-ww2wf]

Thanks!

[@michaelhoots1888]

While hooked up in series , can I still charge them individually? Or do I have to remove the wire connection making them run series ? Basically do I have to remove the wire everytime I want to charge them or can I leave it hooked up In series and charge them fine ?

[@i.b.fishing4087]

I'm curious about this too!

[@seanreid5577]

Same. Where’s he at? 1 yr ago and no answer?

[@UnfiItered]

@9:20 to 9:25 he answers that but it's very quick and hard to catch if you're not paying attention. The battery must be separate before you charge it.

[@TheSteelerbear]

@@UnfiItered That is for a onboard bank charger. What about a regular 12-24 volt charger? im curious as well. Just to be safe I always separate the 2. Pain in the ass but less painful than buying new gear. Thanks

[@maxim_mazurok]

I'm pretty sure that you can charge them individually while hooked up in series, yes. That's what I did with my ebike battery pack - I charged each section individually to balance them out.

[@parkernelton1372]

i love the electrical tutorials helps a lot for people new to boats

[@DanRichardFishing]

Thank you so much! It's always nice to hear that my videos are helping people, it's why I made the channel in the first place! 🤓

[@GaryLWalker]

As an electrician, this is a very informative video. Simple and to the point.

[@crfishing1980]

By far the best on KZbin,

[@DanRichardFishing]

Wow thank you so much!!

[@brencostigan]

Precautionary note: When connecting batteries up in parallel make sure they are both in the same charge state and are identical specification. If one is fully charged and the other is say 50% charged then you run the risk of a very big bang when you make the final connection as the batteries attempt to equalise their charge state by a massive rapid exchange of energy between them. This problem doesn’t arise for serial connections since the battery voltages just get summed together and there is no pathway for them to exchange charge state with each other. So think of serial as adding voltages whilst keeping the current the same & parallel as adding currents while keeping the voltages the same.

[@DanRichardFishing]

Excellent point to bring up, you're absolutely right. Honestly in both scenarios I would prefer to have the same battery models and charge states and if you have an older setup with 4 - 5 year old batteries and one is no longer holding a charge, you should replace the whole set. Thanks so much for your comments!

[@gwagb27]

So what if you have 1 battery that’s a year old and one that is new? Charge them both before connecting them together?

[@outdoorsman9384]

Thanks so much for this video, I hooked mine up in parallel to make it a super 12 volt and I put my battery charger on the one battery and that will charge both you said , I'm hoping this works like a champ I went off every thing u said , so far everything seems to be looking up

[@ramhammer10-4]

You should connect the positive lead of your charger to the positive lead of one battery and the negative lead of the charger to negative lead of the other battery providing you have them wired in parallel....

[@BlackjackArmyCaptain]

This is the best video on the internet answering this question thank you so much for your knowledge and sharing it my friend take care and God bless you

[@philtarbox8256]

Good info Dan... you kept the explanation straight forward and simple... I always try to do the same when I'm teaching someone basic electronics

[@DanRichardFishing]

Thank you sir! :) Hope you're doing well Phil!

[@jeffreypearson6140]

Dan, I run multiple batteries in RV and in Jeep. Always forget proper charging technique etc. Very clear, well done, video.

[@DanRichardFishing]

Thank you so much!

[@fensterputzernuernberg]

You have what it takes IMo to be successful on Youtbe . simple , clear, good voice, great information magnetic character......... yeh you have what it takes

[@artgarcia3531]

Thanks great info I'm new to this I will be using this for off the grid purposes I live in Mexico and having black outs just want to be ready question I should be able to run my fridge for an hour just to keep things cold correct please respond again great job Sir

[@100000zombies]

Eyyyyy i work for interstate, thanks for using our batteries!!!

[@fredernani6710]

Thank you for this informative video! I have a very different application. I need to support my cpap when PG&E goes down which is much more frequent than in the past! I have a couple 12V 35AH AGM batteries and one only lasts me about 4 hours and wakes me up when it runs out! I was going to spend $1500 or so on a Li solar backup solution which is overkill. I may do that in the future for the fridge but my immediate need should be taken care of when connecting my two batteries and one new one ($65 on Amazon) to give me about 105AH. It should work and I can charge the batteries during the day off the very loud propane generator I turn off at night to prevent neighbors from killing me 😂. Thanks again!

[@geofferyhatten9116]

You are the first video to answer my question i appreciate you!!

[@RonMTube]

According to NOCO tech support, two batteries in parallel have to be on a single bank of the charger. However, with two 100 Ah batts you are over the max capacity of that bank. In my case with the NOCO genius GEN5X3 the capacity has to be under 124 Ah. I had to wire disconnect switches between my two parallel batteries so they could be charged with individual banks.

[@rustyc521]

When charging the batteries that are in series with separate chargers,does the jumpers to make the series have to be taken out when charging them individually?

[@DanRichardFishing]

Nope, not at all. I used to do it that way before I got the onboard bank charger and never disconnected the crossover cable.

[@CBGRTR]

If you have 2 12v in series making 24 volts can you just use one charger to charge both or do you need 2 chargers ? Going to both batteries ? Thanks

[@ianpemb9324]

Do your tip on charging apply to lithium batteries? I have two 12v 100ah lithium batteries. Do I still hook up a bank to each battery?

[@jeffthrower4981]

Thank you for showing me how to parallel my trolling batteries For my 12 V trolling motor And when I set up my 2 charger maintainers I hook up one maintainer to battery 1 Then I hook up the 2nd Is charger maintainer to battery 2 as if I was charging them separate Correct Thank you

[@DanRichardFishing]

You got it! Thanks for the comment :)

[@JamesWhite-tg4kw]

How about when they are in series to make 12 V a 24 V battery. Should I use a 24v charger

[@DeviaNT628]

great video and great explanation ! my only question is .. if you changer your battery with your 110v at home and the batteries are in serie and you are using 2 12V battery for a 24v motor. wont the 110v bust your batteries 12v in series?

[@blueback21]

So as I connect to batteries in parallel to add my blue switch, does that mean I can charge the battery each individual on positive and negative? I see you had a comment written as a correction saying that it was a positive on one battery to the negative on the other battery, how does that change with the switch?

[@timhoward7597]

I’m a bit confused now. I have 3 batteries in my boat (1 starting, and 2 trolling motor) and a 3 bank charger. Right now, the 2 trolling motor batteries are wired parallel with one of the banks going to those ( + / - on same battery). I am switching to a 24v trolling motor which means I’ll be wiring series like the other video. In this video you said you could charge one at a time in series? In the other tutorial where you ran the larger wires and wired the 2 batteries in series, you put one charging bank to each battery? So can I wire in series for the motor, and put on one bank + one one and - on the other, or run one bank to each battery with + and - on the same battery?

[@JesseDTF]

Quick question for you.. when you talk about having a charger for each battery, are you disconnecting the jumper cables between the multiple batteries, essentially taking apart the parallel/series wiring every time you charge the batteries? If not, how do the two separate chargers detect only the battery you're attaching it to in order to do diagnostic if the other battery is still attached?

[@Tonycoscione]

When you have 2 - 12v's set up in series for a 24v system, such as in a diesel truck, you said you must charge them individually, but what if you have a charger cable of 24v charging?

[@ronaldgrospe3862]

Hi Dan! thanks for the video. This is really going to help me connect my 12v's in Series. Quick question, you did recommend 1 bank per battery when charging. I only have one charger, would it be ok to fully charge one battery then charge the other or do you recommend getting two chargers? TIA

[@eduardogarcia5398]

What size gauge are you using on those cables ? For the Series Connection

[@jdiez6830]

do you have to disconnect the batteries in series in order to charge them individually? Thanks.

[@____Hugo____]

Just upgraded to a 24v TM, I’ll have my 2 batteries in series for it. I can use a 2 bank charger to charge each battery separately right, I believe that’s what I understood I’m just clarifying!? Great video as always!

[@DanRichardFishing]

You got it Hugo, that's exactly right!

[@pscheppele]

So if I have 2 6volt wired in series. I would connect each battery on its own + and - . Also would I charge them on 6v setting or 12v

[@ivanlark]

do you have to disconnect the cables on the batteries when you plug them into the banks like will it throw it off if they're not isolated? or do you just clamp them regardless

[@DanRichardFishing]

Great question, and no you don't have to disconnect any of your wiring when you hook up the charging cables. I do however recommend that you unplug your trolling motor when you are charging your batteries. If your trolling motor is hardwired you may want to install a switch.

[@mardak]

@@DanRichardFishing But all the batteries would still be connected in parallel, so how would the chargers be isolated? I don't see how the diagnostic capabilities of the chargers could see the individual batteries they are connected to when everything is connected to everything else (including the other chargers), but I'm not an electrical engineer. Anyone care to clear this up?

[@magnump.i.7998]

@@DanRichardFishing Dan, I have two 12v deep cycles wired in series for a 24v trolling motor. And I have a 3 bank genie onboard charger. So when I charge trolling batteries do I connect positive to positive and negative to negative on one battery and the same on the second battery like there separate? And do I have to disconnect anything at the batteries before charging?

[@rickyho7700]

Great video Dan, this video really help me understand the series vs parallel connection. Thanks so much for your tips.

[@DanRichardFishing]

You're very welcome sir, thank you so much for the comment!

[@alainrichard1369]

Great advise on 1 bank per battery for charging. I didn’t do this at first as the charger I had at the time put out enough amps to charge everything. I had 1 battery of 3 die on me but voltage didn’t drop so at first wasn’t detected until I threw some amps at it. Finally tested everything at the end of season and found the dead battery. Never again!

[@DanRichardFishing]

Yep, exactly why ideally you want 1 bank per. :)

[@Salsadepr40]

This episode happen to me a day ago. I had three 12V Battle Burn 100AMP Batteries in paralleled and the third one was dead! I don’t think is damage because these batteries are built to drop to 0 and then recharged back up to 100%. I just don’t know how to get this battery to charge up while using my car alternator. The other two batteries are charger perfectly and read 13.14V each. Don’t know why my third battery went dead. Any suggestions?

[@accordru]

Hi Dan. I have two 12v batteries connected together which makes 24v. How do i charge them with 2 bank charger? Do i need to disconnect the wire that connects them together before i charge them? Thank you.

[@GameBrat5440]

Hey question if I put my battery in parallel will is last longer when am using it?

[@richmarracino5977]

Well taught Dan! I'm coming here if I have questions down the road!😀

[@ballistics1]

Thanks you video answered the questions I had about hooking up the charging system on my 12v series set up for my 24v trolling motor very good 👍

[@DanRichardFishing]

Glad I could help!!

[@JamesWhite-tg4kw]

So do you charge it with a 24v charger

[@osvaldotrevino1991]

on the parallel setup can you wire the device on the same battery, or it has to be one positive to one battery and negative to the other battery?

[@DanRichardFishing]

You need to use both batteries, so positive to battery 1, negative to battery 2. Thanks for the question!

[@saviourazzopardi9941]

Hi if you have In serious setup 36v you can charge it with your Alternator ?

[@stevenolmstead]

I use (2) of these batteries in series to power a three-wheel golf push cart. A round of golf normally lasts about 4 hours. Should I charge the batteries after each use?

[@DanRichardFishing]

That's a great question, what's the voltage of the batteries after 1 use? Honestly I would make it a habit of charging them each time but check the voltage and maybe it's not necessary. Anything at 12.3v or under for a lead acid battery, I would charge it.

[@guywilson780]

I just installed a fish finder for the first time. It is 12v Lawrence 7" screen and rated for .75a. What aH and type of battery(s) do you recommend?

[@Mangesmith]

Oi! Id like to charge 2 batteries that are parallel connected with 2 chargers for the shortest possible charging time. 2 identical batteries with 2 identical chargers. Do i have to disconnect them from being in parallel in order to charge them with a charger each?

[@DanRichardFishing]

Hi Magnus, this depends on the charger, you need to double-check the instructions to see if the charger can charge batteries individually in a parallel setup or if you can only use 1 bank wire for your entire battery bank. So for example my old battery charger you could just directly connect each battery to each bank no problem, but my current charger does not support that. Hope that helps!

[@colebennett1433]

How do you charge the batteries that are in series ? I plan on bowfishing with 2 12v batteries for a 24 volt trolling motor . I want to charge the batteries at some point of the nights …

[@stevenichols4060]

I fish a 28 foot boat on ocean in 15 mph winds and the terrova runs at high speed continously. I want to use outboard's 12v alternator to charge 24v battery or batteries in series while still running troller off the battery or batteries. Have you done this yet and have a video to instruct me?

[@DanRichardFishing]

You can definitely do this (charge multiple batteries in series) but it's a bit more complicated and I do not have experience in doing this. There's a couple of ways to do it, but the most common method is with something called a battery isolator or you can do it with a manual battery selector. I have not made a video on this but here's a quick 3 minute video that explains it: kzbin.info/www/bejne/a3mXnYR_ob6pgrs

[@hdhdididu655]

If i have 2 12 v wired in parallel , will my alternator from my motor charge both batteries?

[@DanRichardFishing]

@@hdhdididu655 yes!

[@hdhdididu655]

@@DanRichardFishing thanks for the reply man , and nice vid. I had another question. When I go to hook up my switch my switch panel for lights and what not, should I put those wires on the same posts that the engine is connected to ? Or the other two free posts?

[@adventurebsn-rt2202]

Do you need to disconnect the batteries when charging each one individually

[@t00dy11]

Somehow it shouldn't be an issue but I can understand why where there is an issue and that's related to them being separate to begin with. Not all batteries are the same even if you bought the with the same specs and brand... I found that the batteries charge at full capacity when charging individually.. maybe 85 to 90 percent capacity when in series... But voltage will be there either way... weird but these lifep04 batteries charge fast anyways compared to lead..

[@mrtroll7755]

Very Helpful and thanks for the step by step Dan!

[@waterskijunkie]

I don’t understand why o wouldn’t just keep the 12 battery for my 12 volt trolling motor separate. Is it because the alternator charges trolling g motor battery? Also what is the bank that you refer to that charges the battery?

[@csud9540]

Thanks for the tutorial, I have two 12 volt 160 amp battery’s linked in series. Could I use two separate 12 volt chargers, one on each battery?

[@DanRichardFishing]

Yes, absolutely that would be fine.

[@anthony32003]

@@DanRichardFishing would I need to disconnect the batteries from each other to charge them?

[@93Golfcoursemaintenance]

Would you have any clue why my negative fuse in NOCO gen5 battery charger keep blowing when my 2 12v batteries are hooked up in series for my trolling motor?

[@DanRichardFishing]

That's super strange Jake, definitely not normal. Are you 100% sure your wiring setup is done correctly? has it being doing this since you installed the charger or it was fine and suddenly started doing this?

[@thomnea89]

hey mate thanks for this video but what do you call Battery bank for charging both batteries ? is it VSR Isolator ? Cheers

[@DanRichardFishing]

If you're charging source is only a single bank and you have multiple batteries then yes you can use a VSR (voltage sensitive relay) but I always recommend going with one Bank per battery so that you have proper battery monitoring and testing for each individual battery.

[@glenntavalozzi5176]

hi dan....alittle confused... i have a 24 volt t/m can i hook these optimas in parrelle and run this motor or do i have to run it series to maintain my 24 volts?

[@stevenolmstead]

I just bought 2 new lithium 12v 10ah batteries. Do I need to charge them - or do they come precharged? Thanks!

[@DanRichardFishing]

You'll need to charge them fully yourself, they are legally not allowed to ship them fully charged I believe it's only 60% of charge or something along those lines.

[@stevenolmstead]

@@DanRichardFishing Thanks Dan!

[@williamwilliam6714]

Thanx, information understood, finally ! Good communication skills.

[@DanRichardFishing]

Amazing, I'm glad it was helpful and thank you so much for the kinds words and for subscribing :)

[@garylittle7960]

We’re getting 2 Dakato 12v 18ah batteries. Do you recommend charging separately with a 12v 3 amp charger or using Dakota 24v 5 amp in series. Not sure if we going to run in series or parallel for the livescope. What’s your suggestion.

[@DanRichardFishing]

Hi Gary, sorry for taking so long to get back to you! So normally I always recommend you run 1 bank per battery... if you don't you can't take advantage of the diagnostics of the charger. So if you're charging a parallel setup and a battery goes, the charger onboard diagnostics won't tell you which one. But here's the thing... not all battery chargers CAN charge with a separate bank per battery when in parallel. I'm doing a video about this soon, but I recently found out that the new generation of NOCO GENPRO 10X series cannot be wired this way... you can only use 1 bank for the entire parallel setup. So all this to say, you need to validate if the charger you want can be wired 1 bank per battery be it in series or in parallel and you really need to decide on how you want your batteries to be configured (series or parallel) and check with the charger manufacturer if you can do 1 bank per battery either way. Don't rely on the documentation... the restriction I mentioned above with the NOCO is NOWEHERE in their instruction manual.

[@qfastqfast]

So I’m running 24v in series. Should I unhook them and charge them or is there a way to run them and charge them up correctly

[@johnbutler5208]

Buy a 24 volt battery charger.

[@darinlieurance2817]

Good information on batteries. Thanks.

[@mattpingel7742]

Great video!! What gauge wire or you using.

[@TonyGruber2009]

Thank you for the video! I have a question. Can two batteries be hooked up in series for a 24 volt trolling motor and also run 12 volt fish finder graphs at 12 volts if the graphs are hooked up to just one of the batteries? Thanks, Tony

[@DanRichardFishing]

Yes, you can absolutely no this but I would highly recommend you avoid doing this because hooking up your graphs to the same batteries as your trolling motor almost guarantees interference on the graphs when the trolling motor is running.

[@TonyGruber2009]

@@DanRichardFishing Okay, thank you very much for letting me know about that likely issue!

[@OregonGrown1991]

If running parallel do the two batteries have to match? Say I have a 50ah battery and a 100 ah battery. Will that give me 150ah? And will it effect anything having them mismatched?

[@mikeharness8196]

Dan I have 2 12 volt deep cell batteries in parallel,, I bought the 2 bank Gen 5 novo charger how do I connect each bank ??

[@kervensthelusma1114]

I have 4/6 volt battery @ 435 amp and I have 8/6 volt battery @ 230 Amps, can I hook up them 435 amp with the 230 amp as one installation for a 24 volt system?

[@slavcomarkoski6456]

Hi i want to ask you guys i have 120ah x2 100ah x4 and 150ah x3 is it possible to connect them together to have more energy or not. They are different types gel and others

[@georgetollefsen994]

Can you suggest a blue tooth monitor for three 12v lithium batteries in series for 36v power. Thanks George Tollefsen

[@jonathanwombles5004]

So if i got a 24v trolling motor i got two tracker lithium batteries says i can’t run in series does that mean i can’t make them 24v for my trolling motor

[@bestillandknowthatuaregod]

when you hook them this way are the Amps stay the same or they double?

[@DanRichardFishing]

Well amperage isn't pushed by the batteries, it's pulled by the electric device that needs the power, so the unit will pull whatever amps it needs and the battery system will provide it.

[@bestillandknowthatuaregod]

​@@DanRichardFishingfor 10 batts hooked in parallel 12v 70 amp each would a 80a circuit breaker installed between the batts and the charge controller be ok or is has to be greater amp breaker?

[@KarthikPraveen-lk9hf]

Hi Dan, how do i make a series connection with an anderson plug?

[@kitjohnson7972]

Excellent video. Thank you

[@DanRichardFishing]

You're very welcome :)

[@johnlong9534]

I have three batteries. Two for the 24v trolling motor and one for the 12v engine starter. Can I take one of the batteries used for the trolling motor and wire it in parallel to the starter motor battery. My voltage to the starter motor should still be 12 v but with more cranking power and the voltage to the trolling motor should still be 24 volts. I use a three bank charger. Will this work? If not, why?

[@KevinJohnson-wh6nz]

So I have 2 12v batteries in series for a 24V system. CAN I CHARGE THEM WHEN THEY ARE CONNECTED USING A BANK TRICKLE CHARGER? DO I NEED ONE CHARGER FOR EACH BATTERY? AND IS IT OK IF THE BATTERIES REMAIN CONNECTED WHEN THEY ARE BEING CHARGE? Help please. Thanks

[@idied2]

I'm naking my first lil power station and came across this on looking up series and parallel as well as charging. Because the toolbox im using can hold 8 12v 5A batteries. Got 4 so far, then realized how I'm gonna charge em. All so using them withba 300 watt inverter.

[@Bo88y22]

Your post makes no sense.

[@idied2]

@@Bo88y22 learning curve

[@boooo1dy]

I have 6-- 12v 100ap I would like to connect 2 - 12v 200ap is that ok to do

[@DanRichardFishing]

Yes absolutely, you can connect two in parallel.

[@ronyasmar4720]

I have 4 200ah 12 v tubular batteries connected in series , please what is the maximum charging current for them ? I'm using 60A . I'm affraid that I'm using high curent and I damage them.Thanks

[@williamallen8767]

Can you wire 2 different battery types in parallel? For instance a starting battery and a dual purpose battery.

[@DanRichardFishing]

Theoretically yes you can it will work, but in terms of battery durability and long-term life, it's not a good idea, it's always recommended that you have the same battery with the same specs connected in series or in parallel.

[@richardharrold4357]

delivered so a knuckle head like me can understand. Thanks partner.

[@DanRichardFishing]

Haha my pleasure bud, take care!

[@animalworld0075]

Thanks for your time informative content

[@josesandoval4234]

Hello, on my Rv I have 2 14 volt batteries connected together as the following: the + and - wires coming from the rv are connected to the first batteries terminals, then from the first battery to the second battery those terminals i have + to the other + of the second battery and the - from the first battery to the second - terminal. I thought this was called parallel. But the way you connected your parallel example is different from mine. I also do have an inverter

[@greatlakeschorus6887]

My 4 batteries are wired different than you explain, is there any way I can send you a diagram of how they are wired?

[@StarClay666]

Hi, me and my friends wired 3 12V car batteries in parallel and for some reason the car has 16V when engine is on and over 13V when it's off. Do you know why? The batteries are new and identical.

[@DanRichardFishing]

Hi there, reading 13 volts after a 12v battery has been charging via a charger or the charging system/alternator of an engine is completely normal. 12v VRLA (lead acid based batteries) consist of 6 cells, each of 2.2 volts. So PEAK voltage on all these combined is technically 13.3v and after 24 - 48 hours, the voltage will settle (resting voltage) to around 2.1v per cell, or 12.6 - 12.7 volts. The 16v is because your engine's charging system is engaged and your alternator is charging your batteries. Typically you should see your battery voltage increase to 14.6 - 14.8 so I am not sure why yours would be going to 16v. You may have a 16v alternator or it may be related to something else in your vehicle's charging system. Hope that helps!

[@NeilGraham.I.M.F]

I understand everything you said. That's information that I already knew. I'm sure I know the answer to this question, but I can't get a definitive answer online. When charging the batteries for my 24 volt trolling motor that are wired in series. I just took the two bank battery charger up to each battery the way you would normally and charge it normally without any issues correct

[@JamesWhite-tg4kw]

This is what I've been looking for. I can't seem to find a straight Answer about it. seems to me when they are wired in series for 24 V they should be charged with a 24 v charger. from what I understand a 12 V charger will charge them but will take longer because they are wired in series to 24 V

[@NeilGraham.I.M.F]

@@JamesWhite-tg4kw that's what I did. Because you can still charge them individually as 12-volt batteries treated just like they're not wired up in series. No work just fine charges normally

[@JamesWhite-tg4kw]

So you just charge them in series with one 24 v charger

[@NeilGraham.I.M.F]

No charge them individually with 12 volt chargers. I have a 12 volt three bank charger and each bank is hooked up to one of the 12 volt batteries acting like nothing's wired in series and it's three individuals. The third one being my starting battery. You might be able to use a 24-volt charger and hook it up the same way you would your trolling motor. But I'm not sure if that would ruin the batteries

[@JamesWhite-tg4kw]

See that is the answer I'm looking for so when you charge these batteries individually with a 12v charger do you unhook the cable going from the positive of one battery to the negative of the other battery so it is not in series like a 24 v

[@ccd5068]

How do you wire 2 batteries (24 v trolling motor) in series with a 2 bank (12v each) charger? I don’t want to have to unwire the trolling motor to charge the batteries individually. I want to leave onboard charger and trolling motor connected. Then just unplug charger AC cable and take off. Thanks!

[@maxim_mazurok]

I'm pretty sure you can charge batteries that are connected in series with just one charger, but that charger will have to match the total voltage. So if you have 2 batteries, 12v each, connected in series - then you can use a 24v charger to charge them both at the same time. This is pretty much how battery pack in my ebike works - 10 sections, 3.7v each, connected in series, gives 37v in total, so you charge that battery pack with a single 37v charger.

[@ronlan1984]

Can you charge them while they're connected

[@ReelFishingClub]

Great explanation

[@davismize]

Learned about the charging reasoning today thank you

[@Jstars200]

Do the batteries need to have the same ratings for comnecting in parallel?

[@DanRichardFishing]

Yes. Ideally they are the same brand, same specs and bought at the same time. At the very least they need to be the same capacity rating or you risk severely lowering the life expectancy of whichever battery has the lower specs

[@jamesbaucom9538]

If you don’t have a charger on boat, how do you charge batteries with an electric charger with the batteries wired in series and parerell?

[@DanRichardFishing]

You do the same as in this video, you clamp 1 charger per battery if in series. For parallel you can do individual batteries or you can connect the entire bank to a single charger if you only have the one. Hope that helps!

[@attackscorpion5323]

I have 24v and two 12v batteries. Can I wire the two 12v in series basically making it 24v and then wire the two 12v and 24v in parallel? I guess I could just buy another 24v and make things easier.

[@michaelmorse2216]

How do you hook 4 batteries up together where 2 are in parallel and 2 are in series ?

[@Bo88y22]

Modern chargers can and do charge a whole battery bank. A Ctek MXS10 can charge up to 300 amp hrs at once from discharge. It will recondition, desulphate and fully restore full capacity as well as diagnose faults.

[@Nightlifeimages]

Maybe I didn't understand. I have x2 12v lithium batteries I will connect in series for 24v I also have a 13amp victron lithium 24volt charger Are you saying I'm not able to use this charger at all? Not worried about dead batteries as they will be hooked up to a smart shunt anyway

[@MrBofficial0913]

Can I connect 4 12v deep cycle battery in series/parallel and 1 24v deep cycle battery together?

[@garyrhew5901]

Dan, I’m looking to put a trolling motor on my 22’ Pathfinder. I want to go with the Minn Kota Riptide Terrova 36v. I see there are 36v single batteries and would love to have only one battery versus 3 however, does the same principle apply, when connecting a battery charger? One battery, one bank? And would you have a recommendation for a particular battery charger? Thank you in advance for your help and keep up the great videos! It’s much appreciated. Mike

[@DanRichardFishing]

Hi there! Glad you asked this question and sorry I didn't see this until now! You would absolutely just need 1 charger with 1 bank, but you would need to find a 36v battery charger specifically for that battery. You can't use a regular 12v charger. If you do look in to getting a 36v, I would recommend you reach out to the manufacturer and ask what charger they recommend. I know Dakota Lithium sells an 8 amp and 18 amp charger for lithium batteries (I am assuming you are looking at a 36v lithium) and you can check those out at dakotalithium.com/12v-24v-36v-48v-lithium-battery-chargers/ and they are currently on sale for $100 off. Hope that helps!

[@garyrhew5901]

Thank you for replying and the advice. I was hoping it was that easy! Much appreciated!!

[@gusgauthier4006]

With two 12v batteries, should you read 24 volts from positive to negative from one battery to another on both ends of the batteries? I read 24v from negative to positive between both batteries on one end of the batteries, but not on the other end.

[@gusgauthier4006]

I forgot to add that the batteries are wired in series.