1、UART communication box (not included) can be connected to the computer to monitor and read parameters in real time. Monitor the battery data and read the communication protocol of the protection board to communicate with the customer's equipment. 2、Stable performance, high-accuracy coulombmeter, based on current scores for time, accurate calculation of battery remaining capacity and charge. 3、Parameter display function, support for Android phone connection for Bluetooth display parameters, set and modify parameters, independent display screen displays parameters (connected for Bluetooth module (not included)). 4、Set up real-time detection procedures and secondary protection to prevent crashes. Powerful APP and upper computer lock the battery without discharging, modify for Bluetooth name and password. 5、Temperature control detection, protection board built-in balanced power, two-way temperature control monitoring. Adjustable temperature control, adjust the charge and discharge temperature through the host computer, high and low temperature controllable protection (with temperature control line). Condition: 100% Brand New Item Type: Lithium Battery Protection Board 30A Size: Approx. 170 x 60 x 12 mm / 6.7 x 2.4 x 0.5 in 40A Size: Approx. 170 x 60 x 18 mm / 6.7 x 2.4 x 0.7 in 50A Size: Approx. 170 x 60 x 18 mm / 6.7 x 2.4 x 0.7 in 60A Size: Approx. 170 x 60 x 18 mm / 6.7 x 2.4 x 0.7 in Cable: 15pin + 2pin Input Output Line Diameter Selection: Current Within 20A 25A 30A 40A 60A 80A 100A Copper Wire 2.5mm² 4mm² 6mm² 8mm² 14mm² 22mm² 38mm² Silicone Wire 14AWG 12AWG 12AWG 10AWG 8AWG 6AWG 6AWG Connection Instructions: After the connection of the protection board is completed, please modify the nominal capacity to the actual battery capacity after normal communication; the cycle capacity is set to 80% of the actual battery capacity. 5. B-, C- output wires can not be pressed or twisted, be sure to solder the wires. Please note: Be sure to weld the B- thick wire firstly, and then continue to connect the other wires. If B- wire is too thin or too long or it is not soldered, it will burn the board! B- must be thick and short. Note: 3. The B- and C- wires must be welded with thick wires. The length of the B- wire should be controlled within 15CM. It cannot be used for charging and discharging before all the wires are connected. 4. The B-, C-, and BC0 positions of each board are different and is marked on the protection board, and you need to find the correct position before wiring. 5. The cable corresponding to the protection board BC0 is the first cable to be connected. When connecting the cables, do not insert the cable above the protection board to connect. The wiring must be connected in order. The wrong wiring may cause the protection board to burn and not work properly. 6. The number of NTCs for different types of protection boards is different. Do not remove NTC when using it. NTC cannot be soldered or damaged. 10. The same port protection version has P- and C- ports. It is strictly forbidden to connect the P- port to the negative pole of the charger, otherwise there is no protection for charging. Charge and discharge negative connection C-, P- empty not connected. 11. When the protection board is installed and connected for Android APP or host computer software, please set the nominal capacity as the actual battery content and the cycle capacity as 80% of the nominal capacity. 12. This product does not come with for Bluetooth module and UART communication box, please buy it separately. 1 x Battery Protection Board 1 x 15Pin Cable 1 x 2Pin Cable