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

Got this on 2 of my lithium battery banks. Works really well, easy to access over WiFi and/or Bluetooth. The version I got came with the WiFi and I added the Bluetooth adapter that came with the separate balancer. Together they work seemlessly and are doing exactly as they should be doing.

Tan pronto lo instale estaré opinando, mientras tanto puedo decir que sobresale la buena configuración y montaje de los componentes.

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..

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.

They seemed really good to start, I replaced 8 kilovault BMS with these and they fit well, seem to be decent quality, and they work. Until they didn't. One battery shut down completely while being discharged and 2 others stopped communicating. The app is spotty at best and if you connect them to WiFi they are perminantlynon wifi and you can not connect to them locally any more. The WiFi based updates basically don't happen, you have to open each battery and refresh, then it's a crap shoot if they actually refresh. Same thing on Bluetooth but it was a little more reliable. Seem to be more reliable when charging. But back to the dead one, Amazon will only return it, not replace it, and Daly was completely useless. Basically just pawning the email off to a few people with no real response. Thankfully I bought an extra to have a spare. But now I don't have a spare.

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.

I bought 3 of thes to use in parallel in a 12V system. They do not work in parallel. Charging is inconsistent and leaves each battery with a different voltage. I returned these and replaced them with JKBMS units and have no issues with them.

I found the overall length of the leads to be too short unless you're mounting your BMS on top of the battery. If you'd like to put it to the side of your bank/batteries, you'll have to cut and splice some extra length of wire to some of the leads. This BMS also comes with six-gauge wire, which is suitable for 55 amp max. This is a 100-amp BMS, so the wire provided presents a fire hazard. It should be 4 AWG. My project was delayed significantly as I had to order more wire and lugs to wire properly. And to get the proper Gauge wire was easily an extra $20 + $8.00 for some lug ends. Fortunately, I own a hydraulic crimper and heat gun, but this is certainly not a plug-and-play solution.