I get a locked Daly BMS app, cause the app is saying it needs a Software Update, and all options are locked out. It says it needs a secure firmware upgrade code? Any idea?
Hi, thanks for the teardown, I was wondering if you can tell me the width of the bras plates attached to the bms and the distance between the threaded holes. I am trying either fabricate a copper plate so I can use my existing battery cables with M6 lugs. Alternatively I am thinking make one of hole bigger to fit a M6 bolt. Thanks
Вот здесь было бы очень интересно сравнен е с такойже бмс только 200А, есть ли в них физическая разница или только маркетинговая)) Так как корпуса у них один в один.
It isn't clear to me what the original problem was. Can you tell more about why the BMS didn't work? I had several Daly BMS for prototype building and the main problem was that it deactivates itself after some time. The only way to reactivate it was to put a voltage of at least 3.60 V/cell between - of the bms and + of the battery. As my LiFePO4 batteries ar charged to a maximum of 3.45V only, this is a real bummer. I also fried one BMS with a voltage higher than 32 V, when it turned off because of a high cell, and the source had this high voltage at no load. This also killed the USB dongle. All in all I am also not happy with Daly and will not use it. I have used ANT BMS for years now without any problems, and thought to use something that is looking more solid. But it seems to be that it looks nice, but performs bad. There is also a new review of Andy from offgrid-garage online, which shows other problems with Daly BMS.
BMS did work at 1st launch. Then owner disconnected BMS to do some work on battery pack, and after connecting BMS back to pack it never worked (unable to activate). BMS was shipped to me and I tried to activate it as well without luck.
Yes you are right That's how I get mine to work when they are in the middle of being programmed sometimes they shut off and you cannot get them to turn back on but that 3.3 volts on the green wire for some reason turns it on save my ass
i could count 12pins on 1 side, so it could be an LQFP-48. By pausing thee video at correct time, I could figure out that its a device from "Sino Wealth" but it only makes microcontrollers and not cell controllers like TI, AD, NXP does. Were you able to figure out what this device could be?
I had a sealed 120A unit for 10S, used it on a golf cart for several months. Winter rolled around, doesn't get down to freezing, but one day it stopped working, I opened the app and the dongle would turn the battery on momentarily, but the app was throwing a high cell voltage code showing three cells at exactly 5v and another at ~0.3v. I tested all the cells with a multimeter and they were all ~4.0v. I'm assuming the unit is fried, seemingly from nothing. I wasn't charging or discharging the cells. I will try to get them to send another, but I will avoid DALY when I can from now on.
I do not know about all that plastic or silicon around the FET's. It looks like it might have been interfering with cooling especially the parts where it leak over the top where cooling plates is suppose to be. Nice video. I have two failed units from 2 years ago. Funny, things have not changed.
@@coreybabcock2025 Not necessarily. This video is over 1 year old. They might have changed design by now. But in any case I would not push continuous 200 amps.
2:40 It looks as if the cables are frayed under the insulation, and only able to carry about half of their rated current. I bought a 200A Daly and managed to blow it (not the BMS's fault). I tried to take it apart and failed, but just in trying I was so unimpressed by the quality that I bought a 120A BMS from Overkill Solar. I'd rather give up 80A than buy another Daly.
I too bought one of the used Overkill Solar BMS. right out of the box they disappointed me. In their ad they stress that their BMS's come "standard" with bolts and threaded bracket soldered to the board and shows a picture of the BMS that way. they stress to have wires instead was more. I ordered "no wires" they sent a board with no wire or the "standard bolts setup. they replied to my complaint a month later stating I order it that way by checking the "no wires " box. this thing never worked right, but I 'm new at this so I'm trying to figure out what "I" am doing wrong. but it was this thing. my balanced cells would stay balanced within .005 or so . but the last volt or so goes insanely out of balance ending in cel shutdown with 350 mv diff.. Today I discovered the protection log in the "battery state" page of the phone app. apparently sometimes it thinks the charger of the inverter / charger coming on , is a short circuit. There were cut off protections that never happened and some that did. and over 63,000 "low temp charge protections recorded and they were still added up. it's in the 70's F. here. S o with zero support ,I guess I'm supposed to trust and WAIT for this place to refund or replace someday months from now. and WAIT to find another and wait for it to be shipped at my expense? come to find out alexpress was selling new ones for about half the whole time
I was going to comment that was an expensive video until I read it was already not working in the description. Don't hear of the BMS boards failing too often.
have you used one of these Daly BMS ? I HAVE A $90 PAPERWEIGHT THT REFUSES TO TURN ON AFTER A LOW VOLTAGE DISCONNECT. I have neither the time or patience for that kind of poor design. got an overkill solar BMS ,works great.
@@davidkettell5726 Not this high of amp rating. Most of mine have been 50 amps or less. Those have done ok so far. None of those batteries are cycled daily though.
plastic mold insulation almost fully covering 1 or 2 mostfets are trrible :O Maybe you got unlucky with a bad faulty bms. How does daly handle your warranty claim? Dalys smart bms are still quite new and they make new software revisions and hardware revisions very frequent. I had one 16s 200a bms from deligreen which is just rebranded daly. I bought 2 months ago and software version indicated it was newly manufactured, anyway it died and i got it replaced. In 2 months the software revision was changed, not sure all changes but i noticed software display current leaving battery being displayed in app with negative values now instead of positive values earlier. They have also changed the way they attach B- and P- wires. The lugs are now crimped instead of pressed. The cables are still pressed onto the bms terminals tho. I think daly is improving very frequent although they have no documentation about it which is bad :/ I do believe daly have excellent engineers but with close to no english knowledge. The sales people on daly know english but they seem to have very limited knowledge about their products and probably dont understand half of the tech talk engineers may talk about lol
Everything fails...usually not so early in its life, but everything stops functioning eventually. Look up "The bathtub curve" and "reliability engineering" if you want - fascinating stuff. (Well, for me anyway).
Probably half the components were pulled off old circuit boards from other products and reused, common in Chinese electronics industry. Who knows how old they were or what they'd been through.
@@kimmogensen5390 its honestly still in the box and the project never was completed. Costs of wire around me made the project costs jump and i never got a chance to finish. Maybe this summer.
The control board seems high quality, but the power board is garbage - wrong. These transistors are to be cooled on the opposite side, they aren't made to attach a heatsinlk above them.
I think that I am going to stay away from Daly and get the 500 amp QUCC BMS with the relays, Andy from the off-grid garage uses it and likes it and has tested the QUCC AND it seems to work like it supposed to
I like BMSs that control charge/discharge with relays, only 1 item that bothers me is a relay energy consumption. If we take 2 relays 20W each then: 20W * 2pcs * 24h = 960W a day just to power relays.
@@SolarEngineering that's why you replace the relays with latching type relays, they only use power when they are opening or closing and not when they are closed or open, I hope this helps, my problem is that I can't afford batteries or the bms, and that sucks because I live in my bus full-time on my friends land and my batteries are old and won't hold a charge
@@jamesmason7124 A friend of mine harnessed the power of a nearby running stream to generate oodles of constant 24x7 power - he heated his hot water and camper trailer over several frigid winters with the excess electricity from his setup to give you an idea.
All my testing with the two daly bms i bought show that its utter trash. Poor design, balance feature is completely insufficient, and software is programmed by a stooge at best.
Well, that was not a good success, only 1.5 days!! I do not like Daly. When I get this new BMS I have ordered from Heltec, I will see if it is any better made. At least it isn't covered in all that plastic and casing.
daly smart bmses are garbage. supposedly the non smart versions are supposed to be pretty reliable but then it's like driving blind. you'd have to rely on cell monitors to watch the voltages.
BMS Smart Daly, a complete piece of rubbish, I bought this shitty 100A 48V and it doesn't connect to bluetooth in any way, there's no technical support, and they don't respond on the Daly website, I'll never buy it again and I don't recommend it.
Do you know what replacement part number are those fet's? I brieflly shorted the battery by accident and blew 2 or them. Thank you!
unfortunately I don't know
Google "SH0804A Z105S" and the data sheet will come up, you could maybe find a similar mosfet but I don't know how advisable that would be.
I get a locked Daly BMS app, cause the app is saying it needs a Software Update, and all options are locked out. It says it needs a secure firmware upgrade code? Any idea?
Hi, thanks for the teardown, I was wondering if you can tell me the width of the bras plates attached to the bms and the distance between the threaded holes.
I am trying either fabricate a copper plate so I can use my existing battery cables with M6 lugs. Alternatively I am thinking make one of hole bigger to fit a M6 bolt.
Thanks
great video, thanks. Can you tell me please, is it a copper cored pcb, I wonder how they get so much current through the PCB?
Вот здесь было бы очень интересно сравнен е с такойже бмс только 200А, есть ли в них физическая разница или только маркетинговая)) Так как корпуса у них один в один.
I assume 200A version has fewer mosfets, but would be nice to verify
It isn't clear to me what the original problem was.
Can you tell more about why the BMS didn't work?
I had several Daly BMS for prototype building and the main problem was that it deactivates itself after some time. The only way to reactivate it was to put a voltage of at least 3.60 V/cell between - of the bms and + of the battery. As my LiFePO4 batteries ar charged to a maximum of 3.45V only, this is a real bummer. I also fried one BMS with a voltage higher than 32 V, when it turned off because of a high cell, and the source had this high voltage at no load. This also killed the USB dongle.
All in all I am also not happy with Daly and will not use it. I have used ANT BMS for years now without any problems, and thought to use something that is looking more solid. But it seems to be that it looks nice, but performs bad.
There is also a new review of Andy from offgrid-garage online, which shows other problems with Daly BMS.
BMS did work at 1st launch. Then owner disconnected BMS to do some work on battery pack, and after connecting BMS back to pack it never worked (unable to activate).
BMS was shipped to me and I tried to activate it as well without luck.
Yes you are right That's how I get mine to work when they are in the middle of being programmed sometimes they shut off and you cannot get them to turn back on but that 3.3 volts on the green wire for some reason turns it on save my ass
Will u attempt to repair??
I doubt if it is repairable.
Black insulation material took some smd components while pulling it. This type of BMS cannot be repaired.
@@SolarEngineeringCan the communication port board be repaired and reassembled? Thank you
Can you show me the remaining chip on the board? the TQFP-44 ic chip
i could count 12pins on 1 side, so it could be an LQFP-48. By pausing thee video at correct time, I could figure out that its a device from "Sino Wealth" but it only makes microcontrollers and not cell controllers like TI, AD, NXP does.
Were you able to figure out what this device could be?
is communication part isolated ?
Anyone know if the VNSZNR bms which looks exactly like daly is just a cheaper knockoff or is it basically daly with a different name
I'm getting that one
AFAIK its a quality knockoff
I had a sealed 120A unit for 10S, used it on a golf cart for several months. Winter rolled around, doesn't get down to freezing, but one day it stopped working, I opened the app and the dongle would turn the battery on momentarily, but the app was throwing a high cell voltage code showing three cells at exactly 5v and another at ~0.3v. I tested all the cells with a multimeter and they were all ~4.0v. I'm assuming the unit is fried, seemingly from nothing. I wasn't charging or discharging the cells. I will try to get them to send another, but I will avoid DALY when I can from now on.
Hello i have a 17s bms Daly. Can i put less batterie on that or i have to change my bms. Thanks
most of the Daly BMS accepting range of cells (ie 3-16s), however I checked 17s and it's fixed number of cells.
probably a bit late to the party now, but what was the BMS IC, there was a close up of the micro controller but not the BMS IC?
unfortunately didn't take picture of that one.
Is that a genuine DALY 250A BMS or a replica?
yes, original
I wanted to know the name of the cell controller IC as well. Does anybody know that?
daily is rubbish
Great video!
I do not know about all that plastic or silicon around the FET's. It looks like it might have been interfering with cooling especially the parts where it leak over the top where cooling plates is suppose to be. Nice video. I have two failed units from 2 years ago. Funny, things have not changed.
that plastic will prevent heat transfer to heatsink, poor design.
thanks!
@@SolarEngineering Correct. They look all pretty outside but inside is the mess.
So your saying the one Ill be getting can't do 200 amps continuous ?
@@coreybabcock2025 Not necessarily. This video is over 1 year old. They might have changed design by now. But in any case I would not push continuous 200 amps.
@@DMIINC2013 well I only plan on pushing a Max of 145 155 amps maybe use the water heater or microwave
2:40 It looks as if the cables are frayed under the insulation, and only able to carry about half of their rated current. I bought a 200A Daly and managed to blow it (not the BMS's fault). I tried to take it apart and failed, but just in trying I was so unimpressed by the quality that I bought a 120A BMS from Overkill Solar. I'd rather give up 80A than buy another Daly.
yes, quality of this BMS could be improved.
I too bought one of the used Overkill Solar BMS. right out of the box they disappointed me. In their ad they stress that their BMS's come "standard" with bolts and threaded bracket soldered to the board and shows a picture of the BMS that way. they stress to have wires instead was more. I ordered "no wires" they sent a board with no wire or the "standard bolts setup. they replied to my complaint a month later stating I order it that way by checking the "no wires " box. this thing never worked right, but I 'm new at this so I'm trying to figure out what "I" am doing wrong. but it was this thing. my balanced cells would stay balanced within .005 or so . but the last volt or so goes insanely out of balance ending in cel shutdown with 350 mv diff.. Today I discovered the protection log in the "battery state" page of the phone app. apparently sometimes it thinks the charger of the inverter / charger coming on , is a short circuit. There were cut off protections that never happened and some that did. and over 63,000 "low temp charge protections recorded and they were still added up. it's in the 70's F. here.
S o with zero support ,I guess I'm supposed to trust and WAIT for this place to refund or replace someday months from now. and WAIT to find another and wait for it to be shipped at my expense?
come to find out alexpress was selling new ones for about half the whole time
JBD makes some decent 150 and 200 amp BMS now. The 200 amp is so far only 12v, but they do have a 150 amp 24v BMS.
I was going to comment that was an expensive video until I read it was already not working in the description. Don't hear of the BMS boards failing too often.
have you used one of these Daly BMS ? I HAVE A $90 PAPERWEIGHT THT REFUSES TO TURN ON AFTER A LOW VOLTAGE DISCONNECT. I have neither the time or patience for that kind of poor design. got an overkill solar BMS ,works great.
@@davidkettell5726 Not this high of amp rating. Most of mine have been 50 amps or less. Those have done ok so far. None of those batteries are cycled daily though.
@@gojeffgordon24 yes the cheap ones work fine i have two but the smart ones are a disaster
@@davidkettell5726 , you are right. I replaced Daly BMS with JBD 4S/100A and it’s working fine, for almost 15 months.
Thanks for your comment.
I have four 200A rated.
Work fine for now under the currents up to the 170A.
It stops my consideration to buy this BMS after seeing this video, thanks for sharing, helpful
oh yeah, definitely not the best quality BMS
привіт чи є у вас ще ця бмс
привет, уже нет
Temperature sensor?
My guess it's measuring heatsink temp to engage fan when needed.
@@SolarEngineering it also shuts down the BMS on both mosfets which would disable it. just my guess.
plastic mold insulation almost fully covering 1 or 2 mostfets are trrible :O Maybe you got unlucky with a bad faulty bms. How does daly handle your warranty claim? Dalys smart bms are still quite new and they make new software revisions and hardware revisions very frequent.
I had one 16s 200a bms from deligreen which is just rebranded daly. I bought 2 months ago and software version indicated it was newly manufactured, anyway it died and i got it replaced. In 2 months the software revision was changed, not sure all changes but i noticed software display current leaving battery being displayed in app with negative values now instead of positive values earlier. They have also changed the way they attach B- and P- wires. The lugs are now crimped instead of pressed. The cables are still pressed onto the bms terminals tho.
I think daly is improving very frequent although they have no documentation about it which is bad :/
I do believe daly have excellent engineers but with close to no english knowledge. The sales people on daly know english but they seem to have very limited knowledge about their products and probably dont understand half of the tech talk engineers may talk about lol
Daly didn't handle warranty case :). They just offered to get new BMS with 50% discount.
@@SolarEngineering ooh. thats no good at all -.-
Hey we finally saw your face! Can put a face in my mind to that voice now
haha, was debating with myself for some time
Ya I blew mine up also. Stupid post colors got me confused.
That with plastic layer acros the board is shoot in own foot ....
Copy protection could be otherwise....
Great video ....
Expensive too...👍
thanks!
Why the hell would something solid state like that suddenly fail? Strange.
Everything fails...usually not so early in its life, but everything stops functioning eventually. Look up "The bathtub curve" and "reliability engineering" if you want - fascinating stuff. (Well, for me anyway).
Probably half the components were pulled off old circuit boards from other products and reused, common in Chinese electronics industry. Who knows how old they were or what they'd been through.
A lot of parts in there lots to go wrong. Cool video
thanks
wow impressive. about to use a 24v 8s smart 250 this made me nervous.
Hi John, worst case it will just die. I'd recommend not to push it to limits.
is your daly bms still running? i run a 200amp but never pull more then 50 , no problems so far
@@kimmogensen5390 its honestly still in the box and the project never was completed. Costs of wire around me made the project costs jump and i never got a chance to finish. Maybe this summer.
Can you do a teardown of my mom's meatloaf. There is some crazy shit going on inside
haha gold :)
😁
cool video idea. I have one of these but have not used it yet...14s
thanks!
The control board seems high quality, but the power board is garbage - wrong. These transistors are to be cooled on the opposite side, they aren't made to attach a heatsinlk above them.
sic edit man.
thanks!
ill buy it for parts mate
it's yours for free, just pay for shipping. You can find my contact info in about channel -> about section.
Excellent.
I think that I am going to stay away from Daly and get the 500 amp QUCC BMS with the relays, Andy from the off-grid garage uses it and likes it and has tested the QUCC AND it seems to work like it supposed to
I like BMSs that control charge/discharge with relays, only 1 item that bothers me is a relay energy consumption. If we take 2 relays 20W each then: 20W * 2pcs * 24h = 960W a day just to power relays.
@@SolarEngineering that's why you replace the relays with latching type relays, they only use power when they are opening or closing and not when they are closed or open, I hope this helps, my problem is that I can't afford batteries or the bms, and that sucks because I live in my bus full-time on my friends land and my batteries are old and won't hold a charge
@@jamesmason7124 got it, need to read about latching relays.
@@SolarEngineering I hope that helps
@@jamesmason7124 A friend of mine harnessed the power of a nearby running stream to generate oodles of constant 24x7 power - he heated his hot water and camper trailer over several frigid winters with the excess electricity from his setup to give you an idea.
It's a pretty design and nice colours 🙃
Yes 👍 ⚡
thanks
Eviscerated. I have been tempted to do this when mine stalled after being disconnected but it has always came back after fiddling.. eventually
All my testing with the two daly bms i bought show that its utter trash. Poor design, balance feature is completely insufficient, and software is programmed by a stooge at best.
I have similar experience and feeling about this BMS. Still need to do more tests on my 500A 4S Daly BMS.
Well, that was not a good success, only 1.5 days!! I do not like Daly. When I get this new BMS I have ordered from Heltec, I will see if it is any better made. At least it isn't covered in all that plastic and casing.
>> At least it isn't covered in all that plastic and casing.
I like it 👍
THANKS THIS VIDEO
👍
Daly has gone down the shitter. Their dumb BMS's are alright but their smart BMS's are garbage. JBD and JK are the new standard
Ничего не понятно, но очень интересно
))
И мертвы пчелы не жжужат ))
Nice to see the inside.
daly smart bmses are garbage. supposedly the non smart versions are supposed to be pretty reliable but then it's like driving blind. you'd have to rely on cell monitors to watch the voltages.
Yeah, won't be buying one of these looking at all the potting goop in places it shouldn't be. Take the current claim, halve it and start from there.
BMS Smart Daly, a complete piece of rubbish, I bought this shitty 100A 48V and it doesn't connect to bluetooth in any way, there's no technical support, and they don't respond on the Daly website, I'll never buy it again and I don't recommend it.
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