Daly bms?

100kwh-hunter

100kwh-hunter

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Daly Bms from China had added a new features to there bms's
You can set a minimum discharge and a maximum charge voltage to your liking, how are your thoughts about daly now?
No i am not affiliated, just curious.....
 
And how to calculate those bms's?
48v x 200A = 10KWatts an hour at 230v?????
I am doing something wrong, i am sure
 
You would normally go based off nominal voltage, which would be more around 52-54V. If it can do 200A continuous, then that'd be:

52*200 = 10400 watts
If you convert that to 230V, then throughput amps would be:
10400 / 230 = 45A

So it really would be up to the inverter if it can handle that throughput from DC->AC

However, if the top voltage is 60V, then at the absolute max @ 200A would be 12kW, or 52A on 230VAC. Pretty beefy if it can continuously output that current.
I haven't been keeping up with Daly BMS through its development, so not sure of the claims vs actual values
 
That's why I hang around here all day. After two years of no BMS and my battery builds probably stinking up the DIY Battery community, I am finally convinced that a BMS is needed. I'll follow the instructions and install this weekend. 60 amp way to big but I'm thinking when I expand.
 

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That is a lot of power.
Looking into the future there will be more inverters on the same bms. and of course a bigger battery bank.
Our fuses are 16A at 230v ac, one will be enough to power our whole house.
Thanks
 
J_Mack58 said:
I'll follow the instructions and install this weekend. 60 amp way to big but I'm thinking when I expand.
Click to expand...
AND....i am waiting:coffee::giggle:
 
Daly are popular for e-bike and scooter builds, and we generally tell customers to oversize the BMS a bit. Would definitely recommend installing the BMS vertically and free of obstructions to allow sufficient airflow. Their 300+ amp boards even have forced-air cooling. One thing to keep in mind is that their balance current is 30mA regardless of size, which is essentially useless on a bigger pack.

We have contacts with their sales and tech teams in case you have any specific questions.
 
I can confirm Daly only supports 30mA balance current for LFP since the balancing resistors have 130 Ohm (3,65 V / 130 Ohm = 28mA for LFP).
I have opened and analyzed a broken 16S 200A Daly BMS.














 
ToBeDefined said:
I can confirm Daly only supports 30mA balance current for LFP since the balancing resistors have 130 Ohm (3,65 V / 130 Ohm = 28mA for LFP).
I have opened and analyzed a broken 16S 200A Daly BMS.














Click to expand...
OOO, what caused that one to fry so spectacularly?
 
harrisonpatm said:
OOO, what caused that one to fry so spectacularly?
Click to expand...
I was trying to investigate the cause. The original owner told us, the balancer wiring has started to burn. Since the PBC is well protected by the black sealing compound but was fried all the way to the BMS IC (SH39F003 ? It was fried as well) we assume there was a high current flowing internally. Some other guy in this German forum thinks it is caused because B- was not connected.

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