DALY Smart BMS 4S 12V 60A with WiFi Module and CAN 485 Communication Protection Board for Remote Monitoring of LifePO4 Lithium Battery Pack

I recently assembled an 8S lithium battery pack. This battery is very suitable, has good compatibility, simple wiring, and smooth installation. After testing, I found that the charging and discharging is stable, there is no obvious voltage drop, and the performance is better than expected.

First one was defective but the replacement works as intended. Fast replacement.

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.

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.

I recently took this lithium battery on an outdoor camping trip and it performed very well! When paired with an inverter, it can stably power mobile phones, LED lights, and portable refrigerators, and the battery life is longer than expected. It is small and easy to carry, and is not as bulky as traditional batteries.

This BMS accessory is a nice quality piece. I got it to replace a part that wasn't working anymore. This one works well for my needs.