The Leaf Spy Pro application allows anyone with a Nissan Leaf electric vehicle, Android device with Bluetooth and a supported ELM327 OBDII Bluetooth adapter the ability to monitor their battery and other vehicle information normally visible only to the dealer.

Due to a recent cost reduction (and feature reduction) many of the cheap ELM327 OBDII Bluetooth adapters from Asia no longer work with the Leaf and report themselves to be version 2.1. The previously recommended Bluetooth Konnwei KW902 OBDII adapter is also no longer recommended as a batch of defective ones have made their way into the market. These will basically short out your Leaf's CAN bus (or any CAN bus they are plugged into). But when removed do not seem to cause any lasting damage.

With the release of version 0.39.97 LeafSpy Pro now supports two Bluetooth 4.x LE approved adapters. The recommended one is the LELink available from Amazon. Bluetooth 4.x LE has the advantage of not needing to be paired and lower power from both the Android device and the Leaf. The LELink is highly recommended and also works with the iOS version of LeafSpy Pro.


The built-in help file is available as a PDF by sending an email with subject "Android PDF Help" to [email protected]


Information displayed by Leaf Spy Lite & Leaf Spy:

* Voltage of each of the 96 cell pairs (highlighted if shunt active)
* Minimum, average, maximum cell pair voltages
* Histogram of cell pair voltages
* Battery Temperature readings (4 sensors for 2011/12 models, 3 for 2013 models)
* Battery AHr rating (this will decease with age and is an indication of remaining capacity)
* VIN
* Odometer
* Number of Quick Charge connections
* Number of L1/L2 Charge connections
* EVSE Max available amps
* EVSE voltage


Additional information displayed by Leaf Spy:
* Battery energy level in GIDs & kWh
* Resetable energy usage meter (Wh resolution)
* Graphic display of SOC, GIDs and DTE (Distance to Empty)
* Remaining distance meter (miles/km) to Event (Low Battery Warning, Very Low Battery Warning or Reserve) based on user selectable energy efficiency
* Graphic display of battery temperature with min, avg, max temperatures
* Tire Pressure of each of the four tires with low pressure warning and delta pressure warning alarm
* Ambient Temperature
* Logging function that records most data and optionally GPS location to a csv file that can be easily imported into excel.


The "Pro" version adds the ability to perform functions normally requiring a visit to the dealer.
* Change automatic door lock/unlock settings
* Read Diagnostic Trouble Codes (DTC)
* Register Tire Positions (required after tire rotation or seasonal tire changes so your Leaf knows the correct location of each tire on the car)
* Ability to reset DTCs from selected ECUs

Recent changes:
- Changed Epoch time stamp from an integer to a floating point number with millisecond resolution (ex. 1527785773.141).
- Fixed bug in initializing maximum Gids for 2018 Leaf. This caused % Gids to be infinite.
- Fixed bug when selecting BMS only and Motor/Inverter only mode that caused app to crash.
- Fixed bug that prevented logging data when in BMS only or Motor/Inverter only mode.
- Added number of records written to log file as one of the items that can be monitored at the top of screen 1.