[Multiple Protection] Overcharge Protection; Overdischarge Protection; Overcurrent Protection; Short circuit Protection; Temperature Protection;Waterproof Protection. [New Upgrade] Smaller size; Parallel protection; Pre-charging function; 100mA passive equalization current; Low temperature rise; Working condition indicator;Consistent /Dischg cuurrent. [Smart ] With the WiFi module, lithium batteries can be remotely monitored through the Internet, regardless of the distance.When the detects any abnormality in the battery pack, it will send alert via the smartphone app. [] Multiple communication functions+ expansion function ports,CAN, RS485, dual UART communication interfaces,rich expansion applications. Name: Iron lithium 4 series 100A same port balanced Discharge current: 100A Over discharge current: 150A3A Charging current: 100A Overcharge current: 150A3A Overcharge voltage: 3.75V0.05V (adjustable) Over discharge voltage: 2.2V0.05V (adjustable) Charging voltage: 14.6V Plate type: R10K(3-10S)/R24K(11-24S) The product appearance and printed words depending on the batch, but this does not affect use. Colour:As Shown Material:PCB Package Contents: 1 * board 1 * Bluetooth module 3 * cable 1 * 1 * Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.