DALYSmart 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 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 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..

I will be returning this BMS. My no-name from Alibaba is far easier to use and configure and the app is much better. Also this BMS doesn't have a separate charge input, so when the unit is 'full' and disconnects the battery, anything connected may be exposed to full charger voltage (solar, battery charger, whatever). The balancing function seems subpar and the app is so confusing/unclear as to what's actually going on that I sought out another unit to try on this pack (110Ahr LiFePO4).The BMS needs to be woken up via a button press on the bluetooth/WiFi module if it has sat for too many hours...which makes me feel like it just tagged on there and not properly integrated. My no-name BMS systems have no such need for a wake intervention (and don't have standby battery draw that is significant).If I had got this for free, I'd probably find a use for it somewhere but having paid money for it, I'll send it back.Also note that the connector for an external UART/RS485 screen is the smaller version and won't connect to the screen's native connector if you have a straight-across cable. I was going to search one out but honestly the 'fuel gauge' in the app is useless anyway.

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.

Awesome thanks

These are a lot smaller and more expensive than the earlier models. Sometimes that can be Good I’m not so sure in this case.

Muy bien