Diagnostic tools.
Built for your workbench.
Explore our battery diagnostic devices, including the OBI USB tool, Makita LXT standalone device, V3.0 colour touchscreen tool and HiKOKI standalone diagnostic tool.
OBI USB toolStandalone devicesProduct support
Shop devices
Choose your device. Contact us to order or ask about compatibility and delivery.
AVAILABLE NOW • TOUCHSCREEN
Standalone V3.0 Diagnostic & Service Tool
For Makita LXT batteries & Bluetooth Smart BMS systems
£110
- Standalone 2.8-inch colour touchscreen — use without a PC
- Makita LXT diagnostics — supported battery readings, cell voltages, temperature and service functions
- Bluetooth Smart BMS — scan and access compatible BMS devices
- Test Lab — battery LED test, raw memory frame, charger checks and live cell graph
- Games- Snake, Reaction test
- Workshop multitool — Wi-Fi and BLE exploration, calculator, timer and built-in games
- Rechargeable handheld device with power switch and USB-C connection
- Durable metal 16mm push button, custom PCB & unique firmware
- On-device menus for diagnostics, recovery and device settings
⚠️ Important: Functions vary by battery and BMS model. The device cannot repair damaged cells, fuses or other physical faults.
STANDALONE • NO PC NEEDED
Standalone Diagnostic & Repair Tool for Makita LXT 18V
For supported Makita 18V LXT batteries
£80
- 100% standalone — No PC, no software, no drivers, no internet required
- Built-in 1.3" OLED display — read all data directly on the device
- Shows pack voltage + individual cell voltages & imbalance
- Displays real-time battery temperature
- Detects battery lock conditions & memory errors
- Attempts repair of supported lock faults (beyond basic DA04)
- Advanced BMS memory diagnostics & frame write repair
- Built-in rechargeable battery
- Simple one-button operation + rocker power switch
- Durable metal 16mm push button, custom PCB & unique firmware
- Readings and service functions depend on battery model
⚠️ Important: Hardware faults (dead cells, blown fuses, damaged thermistors/BMS) cannot be repaired. Success depends on battery model & fault type.
AVAILABLE NOW • STANDALONE
HiKOKI Standalone Battery Diagnostic & Service Tool
For compatible HiKOKI / Hitachi BSL-series and Multi Volt batteries
£90
- 100% standalone — No PC or internet required
- OLED display with simple single-button menu operation
- Reads supported battery information, voltage and diagnostic data
- Displays available cell/bank readings and BMS fault history
- Built-in unlock/recovery function for eligible locked batteries
- Rechargeable handheld unit with USB-C charging and rocker power switch
- Integrated HiKOKI battery connector
⚠️ Important: Compatibility and available functions depend on the battery electronics and model. Unlocking cannot repair damaged cells, fuses or other physical faults.
💻 PC-BASED • USB
OBI LXT Diagnostic Tool
For 18V LXT Battery (PC required)
£45
- Displays charge cycle count
- Identifies battery model
- Shows lock status
- Includes service unlock functionality for supported packs
- Reads individual cell voltages & imbalance
- Displays pack voltage, temperature & error data
- Displays battery ROM ID
Includes: Pre-assembled & pre-programmed device, USB-C to USB cable, software download provided after purchase.
Your device. Its own guide.
Scan the QR code supplied with your standalone device to open its online user manual.
Each new device will have its own QR code and dedicated online manual.