DALY Smart BMS 4S-16S 40A-500A with WiFi Module and CAN 485 Communication Protection Board for LifePO4 Lithium Battery Pack (Smart BMS 8S 24V，400A)

Why did you pick this product vs others?: becuase i have daly product and works fine. Build quality: Good Noise level: no noise Connection 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.

Great bms I've got several of these and they're easy to install and setup

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.

Bluetooth communication can be spotty, but it's got a good distance for connecting. I replaced two BMS units in a pair of 100Ah lifepo4 batteries. One had died after a year, the other battery had been DOA. After replacing the original BMS with the Daly bms, both batteries were able to charge fully, and the cells balanced. I am able to use the app to specify *most* of the values it is supposed to change, and connection *usually* is quick and painless. This is where it gets it's 4 stars, not 5. The app isn't very straightforward when it will or won't actually change a value, but the important things (for my usage) have been changeable. When it doesn't want to broadcast the BT signal, I noticed you can force it by hooking up either a draw or charge to it. It's worth what it costs, and if you've got a dead lifepo4 battery that you know the cells aren't completely destroyed, it's worth trying a new BMS.

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 have 5 of these BMS on a 71kwh of batteries for 13 months and they are all still working

Customer support is helpful and responsive. The bms didn’t work for my needs, but if you’re a more advanced user it may be the right fit. I was looking for something more plug and play since it was my first full battery build. — original post — At first, the bms seemed good and the features all worked, but over a couple months they stopped working. The app won’t connect anymore and the over discharge doesn’t protect. I was able to get my 12v battery down to 6v before the discharge device cut off.

Muy buen producto

Arrived as described. Happy with my purchase. Works well.

Absolute trash. Do not buy. Bought 4. 2 are now bad after 35 days and 1 connector has failed on a third one.