Wow I wouldn't have made a mistake if I had seen the previous 1.2A balancer video and the current video. I bought a 1.2A balancer, so I'm barefaced right now. ^^
Hello, I think the shunt marked EN, on the right side of the board can be cut, and replaced by a swich, or with a voltage sensitive relay, so it would be automatic. Cheers.
Hi I ordered the 14s model and tried to balance something much lower like 4s just to test and it didnt work. I thought they were suppose to test all the way up to 14s not just specifically 14s. Do you know?
sooo, ummm, my battery is an 8s 100 amp hour. with mismatched 100Ah china batteries. do I need to hook up 10=20 of these little things. my pack always gets a low cell shutting it down before it can turn the charger on at 21.5 volts. shutting down at a pack voltage of 26v. this whole lithium lead replacement is a pipe dream at best.
this kind of balancer supporting multiple Lithium chemistry, it could work anywhere in the range of 2v - 4.2Volts, so you could use it with Li-ion 18650 cells.
@@simulatorproteus6810 actually most BMS doesn't have balancing option OR they have passive balancing (which is useless in my opinion). Most expensive BMS ($500+) have active balancing mode, in this case, a separate active balancer not needed.
Question: Can you attach this to a battery that is being simultaneously charged and discharged? Like I want to put this on my LiPo that is connected to a MPPT controller of a solar panel and also connected to a load.
Does it ever stop balancing? I see it was still balancing when voltage difference is only 9mV. seems like it would be wasting power when difference is very small, have you tested to see if it ever stops? The ebay description says it will balance from 3V to 4.2V and stop at 2.9V. Under load, the Lifepo4 may go below 2.9V per cell and still have capacity left. Have you tested that scenario?
I haven't tested, I assume it will stop at some point, 3mV maybe... Don't see V diff in item specs. I'm using this one in my system: th-cam.com/video/rQgOet7AH0I/w-d-xo.html You could setup voltage diff when to start/stop balancing via the app, so far works excellent. update: I guess you are looking something for drones, where size/weight matters, so a bigger balancer might not work for your application.
Thanks for the reply. I'm looking to build a home power storage like yours, or a portable one. It seems weird their ebay description doesn't say when it start/stop balancing. Not looking to get that $130 active though, just something smaller like this one. I might reach out to seller for info instead.
@@SolarEngineering you have a green circuit board you used in the video to connect both the tester and balancer on the battery at the same time, would love to know where you got that small board.
Hi there - great informative video along with others you have posted - keep up the good work. One point I do not understand is why did the 'bank' voltage rise in tests 3 and 4? I can understand the bank voltage dropping a little in test 1 and 2 but you cannot create energy when transferring it only lose energy? Not trying to debunk the video just trying to understand. Peter
Hi Peter it's a great question. It's happening because of the nature of Lithium charge/discharge curve, it's taking just a little bit of energy to raise cell from 3.1V to ~3.7V. I explained curve in this video: th-cam.com/video/X_ucHHnh4Ik/w-d-xo.html check from 4:28 Let me know if it's still unclear.
I've tested 3 balancers so far. In my opinion, for small 2s pack this unit is best. I've added test of another active balancer (upto 24s), but that balancer more expensive and bigger.
@@SolarEngineering would wiring 2 tp4065 charging boards in series have the same effect? For my use case the battery pack will not be under load while charging, so having the cells balanced throughout the charge cycle is not important. I think if I do it this way I'll just have to be sure that both cells her charged completely before using to ensure they stay balanced. Is my logic correct? It would be similar to what this guy did in this video: m.th-cam.com/video/hi8iDy7jsOg/w-d-xo.html
@@DelaneyKassab if you are going to use individual charger for each cell, then yes cells will balanced every time when you are charging it. however when you are going to discharge cells and if cells have different internal resistance, then one cell could be discharged faster then other cell. I don't know your application, but make sure you you are accounted this.
Great . Timme to order one that can balance 10s. I look on eBay , Amazone and alibaba and all is shipping from China . Hope it comes before Christmas . Where did you ordered yours . This balance board it whose in my mind for 2 months now and is exactly what I need for diy ebike batteri packs. I think a button to activate this balance board one time every week it’s sufficient. Great test . I while use a 10s8p battery case with only 70 cells inside to get place with that board and a smart bms .
I haven't... May be worth to get analog amp meter to see what is happening. Thanks for feedback! Also tested more expensive model of active balancer, this module shows amps in application. th-cam.com/video/rQgOet7AH0I/w-d-xo.html
I'd like to point out that this Active Balancer is fine for small batteries but it certainly won't do for say larger 100AH or 200AH batteries as it would take ages to complete. The larger the battery pack the larger the active balancer (Amp Delivery) has to be. Of course, the prices go right up along with the capability & features.
@@SolarEngineering Just poking around the Manufacturers website and they have goodies to be seen. Check out the main site: heltec-bms.com/shop/ I'm looking at Active Balancers to go with my Chargery BMS8T's. I've suggested to Jason @ Chargery that having an Active Balancer available would lkely be a very prudent addition to the product line. Have you had a chance to peak at the QNBBM Active Balancers ? Reviews & Vids here show it to be worthy of exploration.
@@stephsoltesz6731 "QNBBM Active Balancers" do you have link to product? checkout latest video, I found pretty good active balancer. ps BMS with active balancer will be something amazing.
I had the exactly the same words (doubts) until I have installed two of these in my two 7S 100P 200+Ah battery banks and after three days, both banks are perfectly balanced. Watch my videos for proof.
Great Video (as always)! What’s your opinion of a 5-8 amp balancer for a 280AH 24V battery bank? If cells are well matched and balanced at first, is a 2 amp balancer ok? I don’t know. Thanks again!
In theory, you don't need an active balancer for new cells at all. I added it to my system to have peace of mind. So if you going to have new cells and want to add an active balancer, then a 2 amp balancer will be more than enough.
@@SolarEngineering Yes, I read matched cells = happy cells and shouldn’t require much maintenance. Therefore I elected (though controversial) not to install a BMS if the inverter, mppt SCC, smart battery monitor and active balancer provide (charge, temp, monitoring) protection. ...your thoughts? Thnx!
@@SolarEngineering Right SE, BMS has a place but not in my system lol. The latest is I ordered the 8S active equalizer you tested (passed) and now researching battery monitors w/Bluetooth.
Тест интересный. Как раз собирался покупать этот балансир на Али для LiFePO4 120 Ah. Похоже, что и у меня он со своей задачей справится. А вот произношение категорически нужно поправлять.
If you're going to go through all this, at least let us see the important screen. We don't need to see the timer or you fiddling with cables. That's not useful content. The battery checker info is what we need.
I'm skeptical for these reasons of active balancers: 1. They will hide bad cells, always propping them up so you cannot identify when they are failing. 2. They cycle all cells constantly which inevitably reduces the life cycles of the cell. I see they work as intended but there are those unintended consequences that have yet to be flushed out in my own humble opinion.
1. They are not hiding the bad cells. You will see a red LED on the same pair again and again. 2. That's why other balancers only get within 30mv. If you get too precise, you will be transferring all the time.
@@diydan6045 I have the one he called a failure in another video. It has one LED for each pair. I had a 7s5p pack sitting on the shelf yesterday that spontaneously started re-balancing (3 pairs). They are really terrible cells though. Total voltage was still 28.5 volts.
Hello, there is a 5s lto titanat battery, this product is compatible.
It is a best testing video! 🏅👍
appreciate your feedback.
I have the Heltec 4s version on a LiFEPO4 battery pack. I've seen the pack go 120mv out of balance and the Heltec never does a thing. Maybe defective.
I did another test of this balancer: th-cam.com/video/QUmt34YcM-U/w-d-xo.html
So far here is balancer that works great: amzn.to/3kQrWnw
Wow I wouldn't have made a mistake if I had seen the previous 1.2A balancer video and the current video. I bought a 1.2A balancer, so I'm barefaced right now. ^^
Thanks for the video. Is it possible to solder a on/off power button to this active equalizer? If yes, can you indicate how? Thank you
Hi, I think you could add switch for 1st wire (1st cell negative) and it will deactivate balancer (please double check with ammeter)
@@SolarEngineering ok. Do you recommend a switch. thank you.
Hello, I think the shunt marked EN, on the right side of the board can be cut, and replaced by a swich, or with a voltage sensitive relay, so it would be automatic.
Cheers.
Hi I ordered the 14s model and tried to balance something much lower like 4s just to test and it didnt work. I thought they were suppose to test all the way up to 14s not just specifically 14s. Do you know?
its not gonna work until you bridge its empty pins
@@ahmettay2382 how do u do that
Hello, is it safe to keep it connected 24/24h on a li-ion battery pack that suffer from continuous voltage drift? Thank you
I think all of them intended to be constantly connected to the battery.
Hi is it compatible for lto
Can this balance work with 18650 battery.
yes
sooo, ummm, my battery is an 8s 100 amp hour. with mismatched 100Ah china batteries. do I need to hook up 10=20 of these little things. my pack always gets a low cell shutting it down before it can turn the charger on at 21.5 volts. shutting down at a pack voltage of 26v. this whole lithium lead replacement is a pipe dream at best.
not a dream, check out my 23.5kWh pack, works fine for 1 year so far:
th-cam.com/video/RB_O_5Ppv7g/w-d-xo.html
@@SolarEngineering YUP.I'm sure you are not out f ing with it every other day.
What is the difference between this capacitor type balancer and a different one without capacitors?
I tested 3 balancers,
2 of them worked well and one failed.
video with failed balancer in description.
can this replace BMS or use both same time? BMS is very slow to balance usually only few mAh
It could work in parallel with BMS.
Sir I am by active balancer board 18650 cal but seller send me rong marking board *LTO 2.2V how to use this balancer board plz tell me sir
this kind of balancer supporting multiple Lithium chemistry, it could work anywhere in the range of 2v - 4.2Volts, so you could use it with Li-ion 18650 cells.
@@SolarEngineering thanks a lot
In use, do we need connect this balancer while charging or discharging the battery?
It can be connected to the battery all the time.
@@SolarEngineering most bms already have its own balancer why do we need to use this active balancer?
@@simulatorproteus6810 actually most BMS doesn't have balancing option OR they have passive balancing (which is useless in my opinion).
Most expensive BMS ($500+) have active balancing mode, in this case, a separate active balancer not needed.
Could you tell me the name of that board for plugging multiple cell monitors to? Helpful, thank you.
I built it using easyeda.com/ and then ordered PCB on jlcpcb.com/
How much is the capacity for all the battery?
1Ah
Can I use this active balanser at the same time with, for example, DALY BMS for 16s LiFePo4?
yes, I'm using BMS + balancer in my system. works well.
Question: Can you attach this to a battery that is being simultaneously charged and discharged? Like I want to put this on my LiPo that is connected to a MPPT controller of a solar panel and also connected to a load.
yes, I'm using a similar balancer in solar system that you described
Sir. Does 5A 17s balancer work with 13s and 16s battery???
its gonna work if you bridge the empty pins to all gnd
Does it ever stop balancing? I see it was still balancing when voltage difference is only 9mV. seems like it would be wasting power when difference is very small, have you tested to see if it ever stops? The ebay description says it will balance from 3V to 4.2V and stop at 2.9V. Under load, the Lifepo4 may go below 2.9V per cell and still have capacity left. Have you tested that scenario?
I haven't tested, I assume it will stop at some point, 3mV maybe... Don't see V diff in item specs.
I'm using this one in my system: th-cam.com/video/rQgOet7AH0I/w-d-xo.html
You could setup voltage diff when to start/stop balancing via the app, so far works excellent.
update: I guess you are looking something for drones, where size/weight matters, so a bigger balancer might not work for your application.
Thanks for the reply. I'm looking to build a home power storage like yours, or a portable one. It seems weird their ebay description doesn't say when it start/stop balancing. Not looking to get that $130 active though, just something smaller like this one. I might reach out to seller for info instead.
Seller confirms that it will never stop balancing. That seems like it'll just drain power unnecessarily.
@@rcboosted thanks for the update
have you done a video on this topic for lead acid?
How are you supposed to balance lead acid internal cells?
@@alexsiniov balance 12v lead acid sub units of a larger bank
Does this balancer transfer energy from any cell to any cell, or only between adjoining cells?
any to any.
@@SolarEngineering Awesome, thanks!
Can you link the parallel board with the three jst-xh ports on it?
didn't get the question..
@@SolarEngineering you have a green circuit board you used in the video to connect both the tester and balancer on the battery at the same time, would love to know where you got that small board.
I made it myself on jlcpcb.com/
5pcs cost me 2$ and $17 for shipping.
@@SolarEngineering thanks will do the same
A parallel charging board is about 10 USD. Just don't connect the XT60s.
Hi there - great informative video along with others you have posted - keep up the good work. One point I do not understand is why did the 'bank' voltage rise in tests 3 and 4? I can understand the bank voltage dropping a little in test 1 and 2 but you cannot create energy when transferring it only lose energy? Not trying to debunk the video just trying to understand. Peter
Hi Peter it's a great question. It's happening because of the nature of Lithium charge/discharge curve, it's taking just a little bit of energy to raise cell from 3.1V to ~3.7V.
I explained curve in this video:
th-cam.com/video/X_ucHHnh4Ik/w-d-xo.html
check from 4:28
Let me know if it's still unclear.
U have a damaged inductive balancer. Boards using qfn8 Eta3000 with led indicators have bad built quality.
I'm looking for something to balance a real small 2s1p 18650 battery. Are there any good options for that?
I've tested 3 balancers so far.
In my opinion, for small 2s pack this unit is best.
I've added test of another active balancer (upto 24s), but that balancer more expensive and bigger.
@@SolarEngineering Thanks for quick reply! If I use this, the 3s version will work with a 2s battery?
@@DelaneyKassab yes, you could use 3s balancer for 2s battery.
@@SolarEngineering would wiring 2 tp4065 charging boards in series have the same effect?
For my use case the battery pack will not be under load while charging, so having the cells balanced throughout the charge cycle is not important. I think if I do it this way I'll just have to be sure that both cells her charged completely before using to ensure they stay balanced.
Is my logic correct? It would be similar to what this guy did in this video:
m.th-cam.com/video/hi8iDy7jsOg/w-d-xo.html
@@DelaneyKassab if you are going to use individual charger for each cell, then yes cells will balanced every time when you are charging it.
however when you are going to discharge cells and if cells have different internal resistance, then one cell could be discharged faster then other cell. I don't know your application, but make sure you you are accounted this.
2 amps? the ones on the ebay all say 5 amps.
Great . Timme to order one that can balance 10s. I look on eBay , Amazone and alibaba and all is shipping from China . Hope it comes before Christmas . Where did you ordered yours . This balance board it whose in my mind for 2 months now and is exactly what I need for diy ebike batteri packs. I think a button to activate this balance board one time every week it’s sufficient. Great test . I while use a 10s8p battery case with only 70 cells inside to get place with that board and a smart bms .
I've added link to description, it took about 15 days to arrive from US to China.
Did you measure the max balancing current? It's the only unit I've seen with proper capacitors thus far, looks promising.
Great vid btw
I haven't...
May be worth to get analog amp meter to see what is happening.
Thanks for feedback!
Also tested more expensive model of active balancer, this module shows amps in application.
th-cam.com/video/rQgOet7AH0I/w-d-xo.html
Great work.
I'd like to point out that this Active Balancer is fine for small batteries but it certainly won't do for say larger 100AH or 200AH batteries as it would take ages to complete. The larger the battery pack the larger the active balancer (Amp Delivery) has to be. Of course, the prices go right up along with the capability & features.
good point. agree that it's good for smaller battery banks.
@@SolarEngineering Just poking around the Manufacturers website and they have goodies to be seen. Check out the main site: heltec-bms.com/shop/
I'm looking at Active Balancers to go with my Chargery BMS8T's. I've suggested to Jason @ Chargery that having an Active Balancer available would lkely be a very prudent addition to the product line.
Have you had a chance to peak at the QNBBM Active Balancers ?
Reviews & Vids here show it to be worthy of exploration.
@@stephsoltesz6731 "QNBBM Active Balancers" do you have link to product?
checkout latest video, I found pretty good active balancer.
ps BMS with active balancer will be something amazing.
@@SolarEngineering Deligreen on Alibaba, Aliexpress & eBay have various models, they appear to be the primary vendor.
I had the exactly the same words (doubts) until I have installed two of these in my two 7S 100P 200+Ah battery banks and after three days, both banks are perfectly balanced. Watch my videos for proof.
Great Video (as always)! What’s your opinion of a 5-8 amp balancer for a 280AH 24V battery bank? If cells are well matched and balanced at first, is a 2 amp balancer ok? I don’t know. Thanks again!
In theory, you don't need an active balancer for new cells at all. I added it to my system to have peace of mind. So if you going to have new cells and want to add an active balancer, then a 2 amp balancer will be more than enough.
@@SolarEngineering Yes, I read matched cells = happy cells and shouldn’t require much maintenance. Therefore I elected (though controversial) not to install a BMS if the inverter, mppt SCC, smart battery monitor and active balancer provide (charge, temp, monitoring) protection. ...your thoughts? Thnx!
@@richt2633 this idea makes sense, I was thinking to leave active balancer without BMS as well (cause my relays consuming about 700-800W a day)
@@SolarEngineering Right SE, BMS has a place but not in my system lol. The latest is I ordered the 8S active equalizer you tested (passed) and now researching battery monitors w/Bluetooth.
@@richt2633 let me know when you find it, I'm curious.
Тест интересный. Как раз собирался покупать этот балансир на Али для LiFePO4 120 Ah. Похоже, что и у меня он со своей задачей справится. А вот произношение категорически нужно поправлять.
Yeah, Russian guy telling another Russian guy who made video in English that one has issues with pronunciation...
Хорошо, спасибо
))) thanks
If you're going to go through all this, at least let us see the important screen. We don't need to see the timer or you fiddling with cables. That's not useful content. The battery checker info is what we need.
I'm skeptical for these reasons of active balancers:
1. They will hide bad cells, always propping them up so you cannot identify when they are failing.
2. They cycle all cells constantly which inevitably reduces the life cycles of the cell.
I see they work as intended but there are those unintended consequences that have yet to be flushed out in my own humble opinion.
1. They are not hiding the bad cells. You will see a red LED on the same pair again and again. 2. That's why other balancers only get within 30mv. If you get too precise, you will be transferring all the time.
I only saw 1 LED on the balancer
@@diydan6045 I have the one he called a failure in another video. It has one LED for each pair. I had a 7s5p pack sitting on the shelf yesterday that spontaneously started re-balancing (3 pairs). They are really terrible cells though. Total voltage was still 28.5 volts.
Плииз на русском...