New Daly "Smart" BMS w/ Communication. (80-250A)

[Will Prowse]

Would love to hear your thoughts on this: Click Here to see it on aliexpress (non affiliate link)

Seems to have multiple communication methods:

• UART ( UART is UniversalAsynchronousReceiver/Transmitter, It transforms the data to be transmitted between serial communication and parallel communication. As a chip to convert parallel input signals into serial output signals, UART is usually integrated into other communication interfaces.)
• UART 485 (RS-485 adopts balanced transmission and differential reception, so it has the ability to suppress common mode interference. )

And some useful modules that work with the new communication port:

• 485 to USB
• 485 to CANbus!!
• Bluetooth
• Key lightboard (? not sure what this is for)
• GPS module (cannot find it for sale, but it states that GPS module can attach to bluetooth connection)

 

[FilterGuy]

Interesting. It seems that there *still* isn't low-temp protection.

 

[John Frum]

Interesting. It seems that there *still* isn't low-temp protection.

Not sure what "2： NTC sensor " means.
Perhaps its a temperature probe.

 

[mapguy525]

Anyone with a link to the owners manual?

 

[Capt Bill]

Wow. Thinking Daly has good reputation (except possibly in low temp shut off arena); looks like a possible winner with new user configuration options. Looking forward to your hands on review. It does have some choice options that I do not understand yet re: UART or UART 485 or UART485CAN. I image you will be able to explain those options. Hope to see your Youtube clip on this one.

 

[John Frum]

@Will Prowse ^

 

[adnubian]

@Will Prowse will you get one of these in 16S to make a video on? Also - what is the possibility of making 3 independent 16S packs, parallel connecting pos and neg and parallel connecting the BMS sense/charge wires between each pack then running from 1 BMS?? Feasible?

 

[Capt Bill]

While studying the web page for this Daly DL8S 24V Smart BMS 80A 150A 250A bms;
I noticed after scrolling down: Strong load ability, constant discharge current 30A /40A /50A/ 60A

I wonder if that is a misprint (doubt it), or the possible limiting handicap of this Daly BMS. I would want to be able to get a 250A discharge on a BMS rated at 250A. Will: When you get a chance to review this one; Please help us understand this part of the picture, and options for getting the full Amp rating on the battery discharge side.

 

[BigVT]

I'd love to understand if it can communicate with my Victron gear over CAN!

 

[Pierre]

Not sure what "2： NTC sensor " means.
Perhaps its a temperature probe.

I think it is. They call it ‘Negative Temperature Coefficient‘ sensor.
It uses a thermister as a temp probe. In a normal resister the ohmic value increases with heat ( PTC ) but with the NTC the ohmic value decreases very precisely and can be used for quite accurate temp measurement.

 

[FilterGuy]

Exploring the store I found this:
https://www.aliexpress.com/item/4000907254597.html?spm=2114.12010612.8148356.4.4c914ef6T0QkV5

This looks interesting for my 12V builds.... but there is a lot I can't tell about it.
* The scary thing is what @Capt Bill pointed out. Is the continuous current 60A for the 250A product?? This would be a showstopper for me.
* What settings are 'fixed' and what settings can be adjusted.

* Can they be adjusted by the Bluetooth app?​

* What are the ranges for the parameters?​

* Is the bluetooth app available in English?​

* It looks like it might have low-temp protect.... but I can't tell for sure what the settings are.​

​

​

I noticed this:​

​

And This:​

​

It looks like they custom burn the prom with the settings you want. That is kinda strange. I wonder if that is fundamental to their design or if it is just that the app is not ready yet?​

​

 

[John Frum]

Exploring the store I found this:
<snip>
It looks like they custom burn the prom with the settings you want.

Wow... I say the chances of a screw up are frighteningly high.

 

[ghostwriter66]

Interesting. It seems that there *still* isn't low-temp protection.

MOVE TO TEXAS ... 103 TODAY .... LOW TEMP FOR US IS LIKE 50 ....

 

[ghostwriter66]

While studying the web page for this Daly DL8S 24V Smart BMS 80A 150A 250A bms;
I noticed after scrolling down: Strong load ability, constant discharge current 30A /40A /50A/ 60A

I wonder if that is a misprint (doubt it), or the possible limiting handicap of this Daly BMS. I would want to be able to get a 250A discharge on a BMS rated at 250A. Will: When you get a chance to review this one; Please help us understand this part of the picture, and options for getting the full Amp rating on the battery discharge side.

You are NEVER going to get a Discharge of more than 50% of ANY NON-COMMERCIAL RATED CHINESE BMS ... seriously ... virtually every BMS I have gone through - and I have gone through allot -- at about 50% of me pushing a continuous rated HIGH value through them it either turns into a room heater or the things just literally melts the solder off the connectors ... A 250aH Daly giving you 250 is like a VW Beetle going 120 because it has a 120 speedometer -- just ain't going to happen ...

 

[ghostwriter66]

• GPS module (cannot find it for sale, but it states that GPS module can attach to bluetooth connection)

So you should be able to take one of those cheap $10 GPS modems that you can buy off Ebay that looks like a puc with a 5m tail -- cut off the USB - strip the wires and connect it that way ....

 

[ghostwriter66]

Exploring the store I found this:
https://www.aliexpress.com/item/4000907254597.html?spm=2114.12010612.8148356.4.4c914ef6T0QkV5

This looks interesting for my 12V builds.... but there is a lot I can't tell about it.
* The scary thing is what @Capt Bill pointed out. Is the continuous current 60A for the 250A product?? This would be a showstopper for me.
* What settings are 'fixed' and what settings can be adjusted.

* Can they be adjusted by the Bluetooth app?​

* What are the ranges for the parameters?​

* Is the bluetooth app available in English?​

* It looks like it might have low-temp protect.... but I can't tell for sure what the settings are.​

​

​

I noticed this:​

View attachment 12673​

And This:​

View attachment 12672​

It looks like they custom burn the prom with the settings you want. That is kinda strange. I wonder if that is fundamental to their design or if it is just that the app is not ready yet?​

​

They are probably trying to capture the market for those "PLUG AND PLAY" solar enthusiasts .... pretty smart idea ... just tell them what batteries you are using .. the voltage you are using .. and what you want your charge and discharge values to be and they can do the rest ....OF course it looks like once they burn it there's no going back ...

 

[thedodgersonline]

Hi
I received one of the early Bluetooth BMS (still have it in fact) but it was DOA so never really got to test it. At that stage they were using a programme on WeChat (under the Discover / Mini Programs) to talk to and make changes to the BMS. I hope they have go them to work as I do love the form factor of these.

 

[FilterGuy]

You are NEVER going to get a Discharge of more than 50% of ANY NON-COMMERCIAL RATED CHINESE BMS ... seriously ... virtually every BMS I have gone through - and I have gone through allot -- at about 50% of me pushing a continuous rated HIGH value through them it either turns into a room heater or the things just literally melts the solder off the connectors ... A 250aH Daly giving you 250 is like a VW Beetle going 120 because it has a 120 speedometer -- just ain't going to happen ...

Yup I usually derate by half. This one looks like you need to derate by 2/3!

 

[Will Prowse]

While studying the web page for this Daly DL8S 24V Smart BMS 80A 150A 250A bms;
I noticed after scrolling down: Strong load ability, constant discharge current 30A /40A /50A/ 60A

I wonder if that is a misprint (doubt it), or the possible limiting handicap of this Daly BMS. I would want to be able to get a 250A discharge on a BMS rated at 250A. Will: When you get a chance to review this one; Please help us understand this part of the picture, and options for getting the full Amp rating on the battery discharge side.

60A?! No, they made a mistake on inputting the data sheet. That's not true. Keep in mind that aliexpress ads are "copy and paste" from previous products sometimes. Derating by 1/2 or 2/3 is plenty. That 250A BMS will handle 250A. I have multiple videos testing this and it's not an issue at all. If someone can post a video proving me wrong, let me know. I haven't seen a single FET based BMS derated by that much. I am pretty darn sure its the ad that is mistaken. Not the products capability.

 

[Will Prowse]

Hi
I received one of the early Bluetooth BMS (still have it in fact) but it was DOA so never really got to test it. At that stage they were using a programme on WeChat (under the Discover / Mini Programs) to talk to and make changes to the BMS. I hope they have go them to work as I do love the form factor of these.

Which one? Did you reverse polarity it? I have 9 Daly BMS and have never had a DOA. Which model was it? Which distributor?

 

[Will Prowse]

They are probably trying to capture the market for those "PLUG AND PLAY" solar enthusiasts .... pretty smart idea ... just tell them what batteries you are using .. the voltage you are using .. and what you want your charge and discharge values to be and they can do the rest ....OF course it looks like once they burn it there's no going back ...

They are all dead after you burn any BMS. How many have you destroyed? Which model have you personally fried? Whether you buy a $1200 orion or a $10 li-ion ebike bms, they all fry when abused.

 

[Will Prowse]

They are probably trying to capture the market for those "PLUG AND PLAY" solar enthusiasts .... pretty smart idea ... just tell them what batteries you are using .. the voltage you are using .. and what you want your charge and discharge values to be and they can do the rest ....OF course it looks like once they burn it there's no going back ...

What is bad about the plug and play BMS? What settings actually need to be changed in a BMS? Cycle bandwidth is not controlled by BMS for most systems. What are the downsides of plug and play solar enthusiasts? LiFePO4 cycle bandwidth cut offs are very effective and can pull full capacity and I don't see a reason to change them. Why would you?

 

[Will Prowse]

You are NEVER going to get a Discharge of more than 50% of ANY NON-COMMERCIAL RATED CHINESE BMS ... seriously ... virtually every BMS I have gone through - and I have gone through allot -- at about 50% of me pushing a continuous rated HIGH value through them it either turns into a room heater or the things just literally melts the solder off the connectors ... A 250aH Daly giving you 250 is like a VW Beetle going 120 because it has a 120 speedometer -- just ain't going to happen ...

Can you post pictures to substantiate your claim? We need proof.

 

[Pierre]

Amazon.com: 12V 100A 4Series BMS Protection Board with Balancing for LiFePO4 Battery Pack: Industrial & Scientific

Amazon.com: 12V 100A 4Series BMS Protection Board with Balancing for LiFePO4 Battery Pack: Industrial & Scientific

www.amazon.com

This is the Tiny BMS that I am testing / reviewing at the moment.
Would you push 100 amps through it ? I have it connected to a bypass relay.

 

[John Frum]

That 250A BMS will handle 250A.

Will it handle 250A with the existing wires?