i already did the rundown on my powerwall but i didn't have it a full video because it took me almost 20hrs. to deplete my powerwall. i only have 130w of load to use, so its much slower to bring my pack down to its lowest voltage. i have a bit of more than 3v (per pack) left when stopped my rundown. and the voltage diffrence is around 30mV.
i've already done current measurements on my actual powerwall and they have all the same reading since interconnected, all the balancers are interacting to balance the lowest cell pack.
@@francissararana8933 here's my other video on how u can balanced arrange ur cells based on the actual tested capacity of ur cells. th-cam.com/video/bl_iwl2GIPU/w-d-xo.html
@joblessalex i don't have any idea why they can't integrate a high current balancing with bms. most of the bms i know with balancing feature only have less than a 100ma balance current. and some good balancers that i know with high current balancing are just balancers alone.
@@philippinediypowerwall3852 Do you have any info on how these work? I can't figure out how this wouldn't short the pack somehow. Want to build a 2-20s 300a capable one. The charge and discharge method is so cycle wasteful and energy wasteful..
@joblessalex well if you look closely at the test on the video. those 2 cells are in series and the balancers are hooked up in parallel to each cell. making the process somewhat simulating the actual condition when the balancers are installed in a battery pack. the balance method is active balancing wherein the higher voltage pack is transferring extra energy to the lower voltage pack to balance or equalize.
the test took less than 2 hours to balance 2 cells. but in the actual application on my powerwall takes longer since there's more cells to balance and depending on the voltage difference.
Great and detailed video.. By the way, what happens when two packs are lower than other two?? Do they balance by receiving charge consecutively(one after the other) from other two? Or do they balance simultaneously?
it is balancing simultaneously because balancing does not only apply to one lower pack but on all other lower packs. lets say 7S pack with 3 lower voltage packs will be balanced by other higher voltage pack simultaneously until the voltage difference is just about 10-20mV from highest to the lowest pack. that's what active balancing do.
Thanks very much for your videos mate I have the exact same equalizers but I can't get mine to work properly there's a 60mv difference and the red light still doesn't come on. I've noticed in your video you've got the positive and the negative terminal on the equalizers together on the bus bar. I've got mine soldered probably 20 cm apart maybe that's my problem
that could possibly be the problem. but you can do the same test that i did (balance test with just 2 cells) to see if the red led will come on with the lower voltage cell. that means the equalizer is working to charge the lower cell from the higher voltage cell. but if it doesn't come on (red led), you need to consult your seller, maybe ask for a replacement. it's also best to use clamp meter to see if there's current transfer happening in between cell packs.
it works fine with my lithium battery. sad to hear that the balancer is not working with your set up. if the balancer is having a hard time balancing each of your battery pack maybe you need to rearrange your cells using www.repackr.com/ pack builder to balance arrange your cell according to the actual tested capacity of each of your cell. Hope that can be a good help
another thing, you need to revisit the actual condition of each cell. you might have bad or weak cells that is beginning to affect the balancing of the pack due to self discharging condition especially for used or 2nd hand cells. they need to be replaced with good cells.
Yeaaahhh very good video demonstration mate!!! Nice little device =]
thanks bro. God Bless
you should have more viewers and subs loving you real-world test
thanks. more videos to come
Great!
You should do a run down of your Powerwall.
i already did the rundown on my powerwall but i didn't have it a full video because it took me almost 20hrs. to deplete my powerwall. i only have 130w of load to use, so its much slower to bring my pack down to its lowest voltage. i have a bit of more than 3v (per pack) left when stopped my rundown. and the voltage diffrence is around 30mV.
You got ants on your desk.
Nice video, thank you for taking the time to show this. It would have been to put the current meter on both cells to calculate efficiency.
Thanks for appreciating my video. well the balance current that you can measure is the same for both cells since they are connected together.
i've already done current measurements on my actual powerwall and they have all the same reading since interconnected, all the balancers are interacting to balance the lowest cell pack.
Great, I saw the video after buying the 8S version, reassured ^^
good for you bro. God Bless
sir saan po kau bumili ng 1s balancer nyo thnks po
seller po ako nyan sir.
@@philippinediypowerwall3852 ganun po ba sir maraming salamat po sa info sir may nakita po ako sa shoppee same price lng ba ung sau sir?
sir bka pwde mg gawa po kau ng video panu e arrange ang 18650 according sa capacity nya gusto ko rin po kc mag diy ng power wall maraming salamat po
@@francissararana8933 yes same price, the seller in shopee used to be my client and now he's selling the same balancer now :)
@@francissararana8933 here's my other video on how u can balanced arrange ur cells based on the actual tested capacity of ur cells.
th-cam.com/video/bl_iwl2GIPU/w-d-xo.html
Ugh, why don't all bms boards do it this way?! This is so much more efficient and could quite possibly pull an extra mile or two out of an ebike!
@joblessalex i don't have any idea why they can't integrate a high current balancing with bms. most of the bms i know with balancing feature only have less than a 100ma balance current. and some good balancers that i know with high current balancing are just balancers alone.
@@philippinediypowerwall3852 Do you have any info on how these work? I can't figure out how this wouldn't short the pack somehow. Want to build a 2-20s 300a capable one. The charge and discharge method is so cycle wasteful and energy wasteful..
@joblessalex well if you look closely at the test on the video. those 2 cells are in series and the balancers are hooked up in parallel to each cell. making the process somewhat simulating the actual condition when the balancers are installed in a battery pack. the balance method is active balancing wherein the higher voltage pack is transferring extra energy to the lower voltage pack to balance or equalize.
Thank you for sharing your video. How long did the process take?
the test took less than 2 hours to balance 2 cells. but in the actual application on my powerwall takes longer since there's more cells to balance and depending on the voltage difference.
@@philippinediypowerwall3852 does it balance at the top middle and bottom as well? Active balancing all through
it is balancing all through out. whenever the voltage difference goes off by more than 10mV, it starts the balancing process.
@@philippinediypowerwall3852 thank you. I posted a link to your video on my last video. Thank you for sharing.
interesting I wonder how much and how long it would take if you just hooked the two batteries together and let nature take it's course.
you mean hook in parallel? i have no idea how long they would balance but surely they will balance even without any device when hooked in parallel.
Good but shaking the cam makes it hard to watch..
Great and detailed video..
By the way, what happens when two packs are lower than other two??
Do they balance by receiving charge consecutively(one after the other) from other two? Or do they balance simultaneously?
it is balancing simultaneously because balancing does not only apply to one lower pack but on all other lower packs. lets say 7S pack with 3 lower voltage packs will be balanced by other higher voltage pack simultaneously until the voltage difference is just about 10-20mV from highest to the lowest pack. that's what active balancing do.
Philippine DIY Powerwall then, this is a very good product. Please, can you give me the order a link?
@@striveupwards here you can check their website and all of their products that may be helpful for your use.
www.deligreenpower.com
Thanks very much for your videos mate I have the exact same equalizers but I can't get mine to work properly there's a 60mv difference and the red light still doesn't come on. I've noticed in your video you've got the positive and the negative terminal on the equalizers together on the bus bar. I've got mine soldered probably 20 cm apart maybe that's my problem
that could possibly be the problem. but you can do the same test that i did (balance test with just 2 cells) to see if the red led will come on with the lower voltage cell. that means the equalizer is working to charge the lower cell from the higher voltage cell. but if it doesn't come on (red led), you need to consult your seller, maybe ask for a replacement. it's also best to use clamp meter to see if there's current transfer happening in between cell packs.
Hello. Thanks for video. I have to powerwall, and now searching balancer. And now i think i found it. Like and subscreibs your chanel.
thanks for subscribing
Link for the balancers?
here's the link
deligreen.en.alibaba.com/productgrouplist-806516208-3/Battery_Balancers_Equalizers.html?spm=a2700.icbuShop.33011.1.360c2b79XIGy81
This are utterly useless I have one and its not doing anything for my set up
Waste of money
it works fine with my lithium battery. sad to hear that the balancer is not working with your set up. if the balancer is having a hard time balancing each of your battery pack maybe you need to rearrange your cells using www.repackr.com/ pack builder to balance arrange your cell according to the actual tested capacity of each of your cell.
Hope that can be a good help
another thing, you need to revisit the actual condition of each cell. you might have bad or weak cells that is beginning to affect the balancing of the pack due to self discharging condition especially for used or 2nd hand cells. they need to be replaced with good cells.