Prius High Voltage Battery Repair | Gen lll 3
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- เผยแพร่เมื่อ 7 ก.ย. 2024
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Hopefully this video will help you fix your own battery and the process that it takes.
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First time I see someone balance the battery pack. That’s the way it should be done. 👌🏻👍🏻💪🏻
Note of caution with the packs. The modules can thicken over time. If so, when you remove the modules and then go to put them back in, you will need to have a 30 inch pipe clamp handy to gently nudge them into place so that the anchor screws line up from below. You may also need to give them a love tap with a small hammer for other direction alignment (that's not as bad as it sounds :-). If your batteries are slightly thickened like mine and you do not have these pipe clamps, you may be screwed as far as getting the modules back in the pack. It is best to clamp two modules at a time to the secured block and secure them as you go.
Another practical tip, to remove the pack from car by yourself, best to straddle the pack with your feet, with your head facing the controllers and fan. Put one foot on back seat middle support and the one where spare goes. Lift with legs and move the driver side end first. Lift the support leg over the little hump and then set it down on the other side. Then with your eyes trained on the various wires at the controller end, gently swing the controller end out and set it down on the metal platform. At this point, with the pack resting on the metal platform, reposition your right leg as far back in the spare tire well as you can get it. Then, using your legs again, reposition the whole thing as far towards the back of the car as you can get it and rest it on the metal platform. At this point, get yourself completely out of the car. From the back you can now pick up the whole thing and remove it from the car. always use your legs as much as possible and when carrying the pack keep it as close to your body as possible. I suggest wrapping the pack in a towel to avoid the sharp edges while carrying it. center your hands around the battery, as this is the heavy part. the battery pack weighs about 80 lb so always use your legs as much as you can. this will help you to control it better and also might save you a problem with your back. Just thought I'd let y'all know :-)
Oh, in addition to the Torque app there is also the Dr Prius app. I highly recommend this app.
Also, the big Orange plug that you pull to deactivate the battery pack, has a special little nipple on its handle. That is used to remove the two orange safety plugs. That scheme is Toyota's clever way of ensuring that you have deactivated the batteries before messing with the pack. Hold the safety plug at its base and align the male-female parts and rotate, as the safety plug arrows indicate. They will come right off.
BTW, I devised a method for making a modification that allows one to establish modules 23-28 (the ones furthest out from the controller) as 'plug-and play'. I can swap these modules in and out without having to take the pack out of the car. I place the weakest modules in that area. If anyone wishes me to describe how to establish this plug and play area, just ask.
Make a video. It sounds awesome
Excellent video! You do very good work! Very meticulous! Don't know if I have patience. However, the alternative is to trust someone you don't know who may be learning on the job.
Thank you for the outstanding explanation. For those of us not mechanically inclined, the video shows how labor intensive battery replacement is. Understanding what my car needs to function, helps me make the best repair decision possible. My model is 2010 base with 195,895 miles. Because of this video, I will repair my car.
THIS IS INCREDIBLE!!!! I used the ELM27 WIFI module and Torque app for my conventional (non-hybrid) car but I had no idea it could give you this much information regarding the HV hybrid battery! Thanks for the video!
Dr. Prius is better than Torque Pro because it tells you the most critical parameter for battery evaluation and that is Internal Resistance of the module. Voltage is too difficult to use accurately because of the necessity of load which is too much of a variable. Voltage is almost worthless to me but IR can pinpoint the bad module in seconds.
I did the process for my Prius 3rd gen battery. I put a load of 24 volts on each cell for a period of one minute and take initial voltage, after one minute voltage and then voltage of all the cell one by one after completing the process for the whole 28 cells. I repeated the process for the cells that i doubts after assessing their voltage and i found 3 cells that were returning a low voltage compared to others and i changed that. No CHECK LIGHTS so far. Thanks for this informative video @ Just Vlad
Dr Muhammad Shakir please give details of loading testing of 24 volts. What did you do exactly?
Hey! How long last the fixed battery? I meant with only a few cells replaced..Yhanks!
Great job showing how to balance all batteries together. Thank you
I use Dielectric Grease anti corrosion on the cleaned up nuts and buss bars found at your local Auto parts store. I got mine from Advanced Auto. A 3.3 oz. can was a little over $12.00. Should be enough for life time of use.
I was wondering about that. I don't see anyone else bothering with it. I think it's a good idea. That's what the stuff is for.
Buy battery cells here: geni.us/6NOV
Helps me out: geni.us/JustVlads
I was using Torque voltage measurement display type wrong. It must be half dial needle to get min-max value. I did not know until i watch you. Thank you.
Manually input PIDS in Torque: th-cam.com/video/ag02XbyvPNo/w-d-xo.html
Gen 3 pids for torque app: drive.google.com/file/d/1Drv-LA4I_fFEuSAWJPdIUNHdWedUk3Jx/view?usp=drivesdk
Hey brother quick question can I jst pull my hybrid battery and test each one since I don’t have the app or scanner
I like how you've improvised the load testing. Thanks for the advise on the Torque app. Seems like a pretty neat software.
I sent Midtronics an email and they are yet to reply almost 24 hours later. I'm sourcing for other hybrid diagnostic solutions
Check Dr. Prius app, specifically designed for prius.
Am looking to buy a cheap Prius and this will help me alot . Great work !! Thanks you for your time to make this great video.
Nice work. These are not so hard to work on as people think.
Couple of tips I got from another video.
I probably would have cleaned those contacts and then tried the car again. That may have been why those cells were not being charged .. but since it fell flat on a load. The cell may have been damaged.
Second.. to get those red plug retainers out. Use the end of the disconnect handle. There is a little pin sticking out.. use that and rotate.. and those little clips will come out without using a screw driver and possibly damaging them.
Overall great work though... And nice car. That 5 trim package is really nice.
Fantastic job. Thank you for sharing your experience. I didn't understand everything because my english is not as good as expected. Super job.
Even after 7 years it’s very helpful from Ethiopia 🇪🇹 if you don’t mind please can you tell us all tools you used and thanks 🙏
Very thorough video, must watch. Thank you very much for makign this video
Nice ! How set Torque app add HEV battery voltage sensor each block?
For safety... you should take the battery to the table first and the battery can still have 100+ volt with safety plug unplugged
Hi there, thanx and I am very great full for up loading such an informative video. I have bought OBD II adapter and torque Pro as well. I just wanna know which plug in have you used to check individual cell voltage, as it is there in your video. I could not find it yet. Thanx.
Which charger did you use to charge the whole battery?
Good Morning: I would like to get that app to check my 2009 Toyota Prius. Like to see how my battery doing & other stuff it doing so far, I hope to can HELP me out that I can set my cellphone or table too I hope to hear from you real soon
Hi there, would you please tell me what charger did you use to charge the battery in parallel? And how did you wire the battery?
Hi Vlad
Great video and superb detail.
Quick question pls what charger did you use to charge. And is there a specific charge rate? If you could just explain the wiring bit to charge pls thanks
Thanks for that video , so nice explained , now I’m not sure if I will buy a used Prius 😂😂😂🙏
fyi in order to get a read out of the battery banks among other things, you need to get an obd2 to bluetooth and also get Torque Pro which is 5 bucks
afterwards you will need to search the web for Prius Torque sensor modules so you can get the battery bank voltages as well as access to other sensors like SOC and battery temp and cooling fan measurements.
Ok thanks.... Seems that's my missing puzzle!
Don't you just love all the YT videos about topics done by people that have absolutely no idea what they are doing?
Thank you . Great videos I will never thought of check individual cell voltage from eBay use (computer balanced ad) none of the match up high was 7.60 and low was 7.10 add all cells up 210.56. So I did what you did equalizing them. But with 2 copper wiers. I line them up (-)on the same side and tied the end and zigzag all the way down to the other end and did the same with the (+) now they all reading 7.52 . But Definitely will do the load test on the one that was 7.10
P
What model of OB2 reader is that and where to buy? Good job on the repair, sir!
Use the orange breaker plug to disconnect the orange clips. On the tip of the arm on the orange breaker plug, you will see a small circular key point that is inserted into those two orange clips. Once inserted, a quarter turn in the direction the arrows point on those clips and your clip comes free. No need to pry anything.
are you able to check the bad battery with your OBD II scanner or something without getting the code first to check it? so that you can find out any of them ahead of time to be replaced before the code?
Thanks a lot for the video. I just replaced a cell on my 2012 Prius V, although I suspect cleaning the contacts would have solved the issue. I replaced the weakest battery anyway. There where no sudden changes in voltage after I connected a 0.3 amp load to each cell, that's why I suspect it was dirty contacts.
I would use a higher amp load cause the batteries are tricky figure out. Check out this video: th-cam.com/video/jDieFj8ubuA/w-d-xo.html
which scanner you use to get block reading since i have one which does not show my blocks for 2005 Prius. just showing 1 block
I just bought a 03, with bad batteries, I thought about replacing the cells with lithium ion 2 in series, per model, it would charge to 8.4v and discharge safely to just under 6v, I think I'd get a ac charger to top it off, not rely on the vehicle to fully charge the cells, if the computer will all such modifying, I'd like to drive it mostly electric, about everywhere I go, the speed limit is 35mph. Any opinions are welcome! I'd like to double the range or better if possible,
I have a 07 hybrid Camry, I extracted two codes. They’re P3011 and P0A80, should I apply your methods of repair upon my car,too ? Because it’s a Camry...
Sorry, don't you want to disconnect the negative terminal instead on the 12v battery?
Dr. Prius will tell you the bad block. Measuring voltage is a waste of time. You have to measure under load. And you have to measure Internal Resistance. You may be lucky but all that work may be a waste of time.
California Emissions Warranty covers hybrid battery pack for 10 years or 150k miles whichever comes first.
Hello Mike, I have a 2005 with 135 k miles, I bought the car on the street do you think they can help me out?
My 06 is still running strong. Can't believe the battery packs are lasting less
Humidity corrosion on the battery terminals, SENSE WIRES and BATTERY ECU. This messes up the systems ability to determine SOC. If the corrosion is really bad, a fire can result as there is no current limiting on the sense wires. Once you have followed the steps to pull the pack, look inside the battery ECU voltage sense connector (orange 2004-09). Check for corrosion on any of the pins, clean as needed with contact cleaner. If its bad inside the B ECU it will be worse inside the plug. Digikey carries the replacement multi-lock pins from Tyco. At the batteries, clean the corrosion from the plates (soak in vinegar), replace the M5 iron nuts with stainless steel flange nuts. The sense wires, I cut the plate off, put 3" of 1/8" marine heat shrink (heat glue inside) and added 1.5" of wire between the plate and the sense wire. Each sense wire must be checked and cleaned back to copper before soldering. Once the sense wires are repaired and the plates have been soldered back on, pull the shrink tube all the way to the plate and heat seal it. Look up salt/vinegar and baking soda wire cleaning solutions for corroded wires...hope this helps, be safe...
eb b tkl
What are the sense wires? And have you thought of making a video with your explanation since it seems to be a more comprehensive refurbishing of the entire prius hybrid battery and it's management? Thanks for your guidance.
This would be under warranty in California. 10 years and 150k. Dr. Prius would show you the internal resistance and voltage instead of crappy Torque-Pro.
Can you help me on where to get the PID code for the Torque pro app .. for a 3rd gen 2012 prius without the plugin? looks like that's what you've got.. would love to have the same setup for testing my car. Thank you!!!
I looked more into your videos and found it .. thank you!!
hi thank you for uploading this very very helpful video , i have got few questions and one request, the questions are , what charger did you used to charge batteries what was voltage and amperage for charging.and request is if you can elaborate a bit more on downloading Prius pid i tried but no luck maybe a short video clip i am sure i and many people would appropriate that.
thanks
did you consider dialectic grease when you reslembled, love this, thanks
So when you measure the cells with your meter should the value between 7.50 and 7.60?
Any updates on how the car is running an if the battery is still good.. now 2+ years after
What program did you use for testing individual modules while the battery was in the car?
Very helpful thank you for sharing this important information
I have a 2012, my brother drove my car for months I think in power mode. Now it charges strange, most of the time when I get in it, it either has 1 or 2 bars, even if the night before it was fully charged!
Which is best to diagonise Toyota prius Torque pro vs Toyota Techstream ?
I'm not sure what you're intending to do, but purchasing a BAFX OBD2 scanner for about $20 and the Torque pro app for $5 will only cost you $25 total, and it allows you to view an incredible amount of information about your car. If you need help setting up the sensors in Torque Pro for the Prius, check out this video I found: th-cam.com/video/GYrslzbrwz8/w-d-xo.html
This isolater plug has the tool to open the small orange clips. saw it on another video.
+Ron A. Bolton your right, I didn't know that when taking it apart. Thanks for pointing in out.
Thank you
What is the OBD plug in you bought the brand name and model
A very informative video. Good Job. Thanks.
Hi friend, can you tell me how to add the battery display to my obd2 so I can check my battery voltage. I have add it the BIDS to torq already so I should be ready but I don't know how to add the battery display reader like you have on this video
I worked in Podiatry (retired)and every time I see someone working on a heavy battery (and there are a lot)with nothing but slippers I cringe,people just don't realize just how much damage they can do to their toes and feet just by pinching ure self between that battery and ure feet,and if ure diabetic it's 100% sure you are gonna loose ure toes,be careful!!
Hey dude
I have 2009 toyota prius yes I would like to know where did you get the Fancy app it.
I'm calling from Houston Tx
Is there a different way I could check? Something similar to 2nd gen? I’ve been trying to find something that Ivcould just give it a simple check on the panel but yet nothing to be found! Do i have to buy measuring devices? Please help
Great job man!
How many miles before it went bad.
Bro, would you mind to link me to the right ODB2 & it’s app for hybrid battery check like yours? I’m not sure if I could find the right one on amazon or eBay myself, plz recommend me one. Thanks.
May I suggest you go to
priusapp.com/
This developer has tested 100s of OBD2 adapters. Go to the site and click on the drop down menu “What OBD2 to Buy”. May I remind you there are many Chinese knock off, bogus adapters on eBay. So this developer has a few recommended OBD2 adapters. The developers App is called Dr Prius, the specifications for which are in the App Store. Last week, based on the recommendation of the site I bought a second hand Carista 2 adapter( $10). Using the free version of Dr Prius App, I was able to read the voltages of each and every module of my 2011 Prius’ high voltage pack.
Hi can u send me imag of axact how to check battrey coz cant see proper how to conect with tranfomer nd multimeter
To battrey plz
Did you have any problems when you plugged in the 12 volt battery mine didn't reboot took like 4 times
What battery charger did you use to charge all the modules at once?
I want to know that too he said it was a 1 amp charger
@@RSADYNAMICS I think simply wiring up the cells in parallel like he did will balance out the cells voltage which is the most important part
@@HEVTech1 yes but what did he charge it with? Do you use a normal 12V charger set at 1a or do you need some other kind of charger
@@vinceking719 well each cell should be charged to around 7.2v. A 12v charger would overcharge the cells. Most people use a hobby charger that supports multiple battery types and multiple voltages
Thank you very much. Having a hard time finding something like that in Australia. Would this work if I had it shipped from America? www.amazon.com/Battery-Tender-022-0197-Volt-Charger/dp/B00VGO28CW
Where did you get the cells?
What battery charger settings did you use? GREAT VIDEO BTW
I second that question....
Im in the process of refurbishing the pack on my 2005 prius with 200,000 miles and am going to cycle all of the cells 4 rc chargers to bring back the capacity to 6500 Mah. Then load test with a battery load charger. My question is about leveling the pack. Do i just put or wire all the cells in parallel. (plan on using alligator clips) and then use a RC charger to charge the pack and then let it sit. Im very confused on this last step.
the reason you want the batteries all in parallel is too equalize the voltage in all the blocks so they are the same. Honestly this is not as critical as if it would be a lithium ion battery but still good to do because if you have to much variation in voltage between the blocks the computer will trigger a fault. So if have enough wire clips just do it. It will take a while for the batteries to equalize. i would leave it overnight. you dont need to charge it as it equalizes because this could alter the voltages. hope this helps
There is absolutely no need to parallel the modules. All it does is stabilize the surface charge. The moment they are subjected to a load in the car, they will diverge almost immediately. This is because NiMH voltage with two paralleled modules stabilizes in very short order. I have personally confirmed this with testing. Empty module put in parallel with a module that had 4000mAh input. After 24 hours in parallel, they were 1000 and about 2600 respectively - still substantially out of balance, and their voltages were EXACLTY the same when disconnected from one another. Anything close is good enough as healthy modules "self-balance" to some degree. If charging with RC chargers, charge from empty to about 4000mAh input and the same end voltage - these will be extremely well balanced.
Did you have to clear the code after your repairs or it will clear itself after a certain cycles ? By the way, great video, thanks...
Hello thanks for informative vedio, I am writing from Mongolia, I have 3rd generation pius that have problem with HV battery, and I seek help from the auto mall service shop they told me that 3rd generation HV hybrid battery must be replaced all of it even though only one battery pack is bad, because it is not getting better if only change the bad pack (must be changed by all 28 pack battery) also they said can not to change only bad cells must be done by all. so I am getting confused and want to ask you. since you changed the HV battery did not occur any problem with HV hybrid battery????
Hi, normally changing out the bad cells will give you plenty more driving but in extreme cases like ultra high milage cars will need full replacement. If it was me i would repair it first. Normally the cells will last 200k plus miles but sometimes one or two might fail along the way. Hope this helps. Thanks
how did you charge the battery just from home electric or use some equipment to do it, in other word my country uses 220v so do I just charge from it?
Ayyy. I love Just Vlad videos!! Keep making these awesome vids my Ukranian brother!
Hi man, thanks for the video.. I tested the modules on my Hybrid battery Toyota Prius C 2012 .. Last week there were showing 7.82 V.. This week using a different volt meter they are showing 7.5 ..when I hook a bulb to it, the voltage go down to 7.1 and sometimes 7.0V on all of them. What next?? a junk
ard is offering a battery for $750.00 + $250 for the core .. is my battery fixable or do I need to save time and money and buy the one from the junkyard? thanks for the advice
This video will explain how to tell if your battery module is bad: th-cam.com/video/jDieFj8ubuA/w-d-xo.html
Once you figure that out, normally its only one module that needs to be replaced.
@@JustVlads That is incorrect. The batteries should be replaced as MATCHED pairs. Please watch this video to understand better. priuschat.com/threads/prius-hv-battery-module-testing-and-matching.191354/
It is December 2019 now. Did you have any problems with that 2010 Prius battery since the replacement of cells?
Having issues with our 2010 too. Just got a p0a80 code. About to get a torque app or something to diag. What problem are you having?
@@chrissignal8857 how many miles?
@@nellatl 160k
@@chrissignal8857 i talked to dealer they say batteries last from 100k to 200k. Funny the batteries never wear out under warranty
@@chrissignal8857 did you ever clean the blower motor that cools the hybrid motor? 🤔
What version of Torque app is that and does it work on iPhone x?
Great job
Just Vlad, awesome video, well made and put together. Especially that wire technique to balance the cells!
Anyways, on the Torque app, in my 2007 Gen II I'm getting a delta voltage of 0.1V at around >56% SOC, 0.2V between 53 - 56% and 0.3V in the 40% range.
I dunno, is that considered unbalanced?
Wow! Thanks for that video. Was that just a 12v 1amp trickle charger you used to equalize the entire pack? How did you wire that transformer to load test? Just put the battery cell between the primary and secondary winding?
+Starr M to balance the battery quicker I used the small charger for about 6hrs, but the battery will equalize without it if all modules are wired parallel. It will take a while though. About the transformer I just needed some thing to pull high amperage to see the cell condition. I used the low voltage side of the transformer, which was the secondary on mine. Using a headlight bulb to load it also works good. Hope this helps
@@JustVlads can you describe the charger specification
i am impressed pls tell since u fix ur Prius battery did u have any problem
thanks, so far everything is perfect. I suspect that eventually another module will fail. Only way to fix it permanently is to replace the battery modules all together. But for a cheap fix this works and could last a while.
give your mail address or contact numbers
What's the best practice of correctly load testing the each of hybrid battery module?
T M PH buying a load tester from harbor freight for $17
wow.. smart guy!
i purchase a prius 2011 model lahore. but on 3 rd day i recieve the message of check engine. than i went to mechanic and knew battery was dead. new battery is very expensive even though my millage was 80000 km only/ i need to know any possibility of checking out of 28 cells in lahore where i can get my battery ok cheaply by replacing one cell if possible
Smart Boy chk olx
Only defective modules can be found via the voltage. With a capacity measurement, weak modules can also be found. These weak modules are among the first to be broken the next time. I found a 7.4 volt module with only 1800 mAh. Normally old modules (year 2007) have approx. 5500 to 6500 mAh.
Here you find the way to check the capacity of your cells:
th-cam.com/video/g5KAPge-f6E/w-d-xo.html
Friend kindly make a video or show us how to set up our .torque just like you after downloading the pids
Video will be up Friday morning. Thanks
Thank you. I have a 2010 prius and have downloaded it the pids for 2010 prius but don't know if I just need the regular gen3 prius pids
th-cam.com/video/ag02XbyvPNo/w-d-xo.html
Hi I like the way you do. Quick question. How do use the transformer to make load? Would you explain briefly. Thanks. I have Prius 15 station wagon and give me hard time.
Check out this video, it should answer your question about how to check the batteries correctly: th-cam.com/video/jDieFj8ubuA/w-d-xo.html
Would you please show me how to set up the "Profile" and display custom PIDs like the display on your phone. Thank you
Use paid version of torque.
Hi
Pls adv how the battery was charged.
What kind of ,power supply charger?
Volts?
Tkd
Amps?
hey bro, I had the "Check Hybrid System" error, I did a check with the diagnostic tool, the error is P0A80, so I did again a test with milimeter and all cells are over 8v except 2 blocks are 7,8v . what do you suggess ?
Did you figure this out? My 2015 Prius just had the check hybrid system error message pop up and i had the same code when i scanned it.
Is this car still working with the same battery?
Hey Vlad, after you change the cells, can you reset the mistake and make hybrid work again with this obd reader you have? Hope I'm clear enough, Thanks!
Yes, you can reset the triangle light with the Torque app. Thanks
Great video
Great job for a newbie but how much was one cell!
+Augustine Sullivan they go for $30 - $50 a modual, depending on where you buy them.
What is the name of the app your using
HI, What ODB2 did you use? I have 2010 Prius, that needs the hybrid battery. What battery monitor did you use to see hi/low voltages by each pack?
Obd adapter does not matter. The app is called Torque and you'll need to install pids.
Just Vlad I have a Bluetooth obd2 and also bought tourqe pro. Not sure what pid to install as I am not getting any battery info they all are black, not in green!!! I install gen3 Prius PID.... What am I doing wrong! Can you help? And yes BT is connected as I can see all ECU info.
Keep trying, the app is not locating them. If you have to, in the app enter each pid manually and then it will work. I will try to make a video about this soon but hope you will figure it out on your own.
Qayuum, get Dr Prius App. The free version measures the battery banks in the HV Pack. I suggest that initially when you want to connect on Bluetooth, that you clear all other Bluetooth devices from your iOs device.
Why did you group the cells in pairs?
alex tworkowski I think he did it that way because that is how Toyota has the voltage sensors wired up. They don't check every single module but they check them every two modules which are wired in series. That's why he gets about 15 volts.
Hey Vlad, how do you actually test the voltage with the battery in the car? How did you get your “low” readings. Did you turn on the car and wait for the cells to discharge and see which goes lowest, or were those results after a drive? I don’t have an issue yet but I notice when I’m monitoring the cells live as I’m driving some dip slightly lower than others sometimes, and during other drives sometimes other cells dip lower.
Driving around at slow speeds gives the battery the most stress and thats when the worse measurements are recorded. If using the torque app, it has highest and lowest value record options, which will give you an more accurate assumption than trying to catch it live. If your not triggering a code, your fine for now. Even if you do get the code you can still drive the car if you have too with no issues. Thanks
Great video!
which obd scanner you are using? I have one not reading block voltages.
Scanner does not matter. You need the "Torque" App on an android device to see all the prius parameters.
low voltage cell replace or charge only.,?
Hello, do you know what's the highest voltage difference should be in? Mine was all within .05 volt range except two bad ones which were over 1 volt difference which I replaced them and my car running fine. It looks like the voltage difference is more important than actual voltage itself. Is it true? Last question, do hybrid cars lose power as the hybrid batteries get weaker? Thanks
Yes it is no difference than a flashlight battery, just bigger. You lose fuel mileage as the battery wears out.
Too bad you are not in Cali. Main battery warranty is 10 years and 150k. Dr. Prius will tell you voltage AND Internal Resistance. It's what the Pros use.
That's why cars cost an extra 15-20% in Cali too.
What did u use to charge the battery to bring all to the same voltage
+Farnaz Makdum you don't need to charge them to equalize the voltage. You just need to wire them all in parallel, all pluses and all minuses together will put them in an equal voltage. Hope that makes sense.
So you just connect all positives and all negatives. Do u have to connect anything else.?
+Farnaz Makdum yep, you'll have a huge 7.2v battery. Leave it overnight and all your modules will be the same voltage. I learned over time this step is not necessary, but people like to do it anyway.