BK400 vs Polying 2

BK400 is a professional Bluetooth car battery diagnostic tool. Connect to BK400 hardware via Bluetooth to monitor real-time voltage, plot live curves, and perform cranking tests, charging tests, and waveform analysis to fully evaluate battery health. Schedule automatic voltage sampling tasks and review historical data with interactive charts across customizable date ranges. Manage multiple devices simultaneously with fully isolated data. Built-in OTA firmware updates keep your device current. Use the vehicle finder to locate your car on a map. Generate professional diagnostic reports with one tap and share them with customers. Supports 15 languages for users worldwide. BK400 是一款专业的汽车蓄电池蓝牙智能检测工具。通过蓝牙连接 BK400 硬件设备，您可以实时监控电池电压、绘制电压曲线，并进行启动测试、充电测试和波形测试，全面评估电池健康状态。支持静态电压采集和定时任务，自动记录历史数据并生成可视化图表，支持按日期范围查看趋势。多设备同时管理，数据完全隔离互不干扰。内置 OTA 固件升级功能，确保设备始终运行最新版本。寻车功能通过地图标注设备位置，轻松找到您的车辆。一键生成包含启动测试与充电测试数据的专业检测报告，方便分享给客户。支持 15 种语言，满足全球用户需求。

Polying 2 is an APP specially designed for interacting with Bluetooth smart devices. Function: 1. Bind Bluetooth smart device Users can use their mobile phones to bind Bluetooth smart devices, so that they can interact with the device through their mobile phones. Display the current status of the device and modify the parameters of the device. 2. Firmware upgrade Polying 2 will automatically detect and upgrade the firmware of Bluetooth smart devices.