DALY Smart BMS 4S 12V 100A with WiFi Module and CAN 485 Communication Protection Board for Remote Monitoring of LifePO4 Lithium Battery Pack

Why did you pick this product vs others?:becuase i have daly product and works fine.Build quality:GoodNoise level:no noiseConnection quality:App works great and the green light when on/charging is very bright.Ease of installation:Yes, it was more ease if the cables where label.Usb ports:Bluetooth / and the CAN/RS485 cable Functionality:S16 51.2V Battery.

I bought this in hopes that it would fix the bad 12v 100Ah LiFePO4 battery that I bought. It solved the problem. I had charged up the near dead cells with a power supply. This BMS brought all the cells up to there fully charged point and balanced the entire battery.The only thing, if I had known 100 % that this was the fix I would have bought the version with the remote readout.Good product, it is working fine, I been checking it every few days since I installed it. Now it's time to seal up the battery pack.Recommended!! Good buy.

i got 4 of these to maintain 4 banks of 320ah lifepo cells, 16 total, 4 per pack. it was very aggrivating trying to install these with little to no documentation, yea, there's videos but they dont really go into much detail. to all buyers, know this, "THEY WILL NOT ACTIVATE UNTIL YOU PUT A CHARGE TO THEM. this does not matter if your cells are pre-charged for storage or not. once there is a push to them through the bms, they will come alive. however, without putting a charge to the bms/battery bank, they will NEVER come online, and they will NEVER be seen by the APP. it was very aggrivating that i couldnt check the bank before connecting it to my system. i had to build the bank, and hope for the best then connect it up and attempt a charge.. before i could even see the bms.. which sucks from an engineering standpoint. also keep in mind, these bms do get hot, they do not have a built in cooling fan..something to consider.. they maybe only 100 amp, but they do get hot when they are pushed to 80-90 amps.. otherwise, once they are up and running, they do pretty good. i've had them on a 43 foot sailboat behind a victron 3k-watt inverter, and they doing great.. just wish they would make it do MPPT modbus over tcp.. its a basic protocol, so i dont know why they dont do it. it would also help if the wireless module wasn't just bluetooth. so i'm building a esp32 gateway to convert ra485 to mppt modbus so that i can read them with my victron cerebro gx.will buy them again if i ever build another cell bank..

This bms does not work well. It read incorrect voltages, so i kept undoing and redoing the wires, thinking it was my leads. I finally got fed up and ordered a different brand. The other brand has no issues at all. I had used Daly in the past with success, but it seems like the quality has gone down. The app changed as well. The app has always been garbage, so no change there, as it’s still garbage. Inconvenient to install, settings are hard to change, if you do get the setting changed you have to hope the setting sticks. The WiFi and Bluetooth adapter is almost a joke.

Small form factor 4S 100A made to fit Blue Carbon battery. After years of not loving the old BYD batteries daly saved the day. Exact fit for the troublesome Blue Carbon LiFePO4 batteries.

I am using this to balance 4 lifpo4 cells at a time. I can charge 4 cells with my bigger charger. Saved me a lot of time.

Awesome thanks

This is the fourth Daly BMS I’ve purchased - but it will also likely be the last. The first BMS was for a 12v system, and other than not having a good balancing function, it worked as expected. This led me to purchase a 24v and a 48v unit - and those have both been disappointing. The 48v unit died within a week and was replaced. The 24v unit jumps around on the voltage, which can cause protection to trigger incorrectly if you get too close to the charge / discharge limits. Neither have good balancing either.I purchased this unit mainly because of timing - I wanted to get a different brand, it none would arrive in time, so I took a chance on this one. At first it seems greatly improved - better balancing, and more accurate voltages - but now it has started briefly registering incorrect voltage on balance line 7, causing the whole battery to shut down. Warrranty process so far has been ineffective and frustrating - sorry Daly, would not recommend.