Leaf Spy Lite lets a Nissan Leaf owner view detailed information about their Leaf's battery by plugging in an inexpensive ELM-327 Bluetooth OBDII adapter into the standard OBDII port on the Leaf. ELM-327 Bluetooth adapters are available on eBay for around $10-$20 and one is required before Leaf Spy Lite can display information from your Leaf.
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 only one currently recommended is the Bluetooth Konnwei KW902 which still supports all the needed ELM commands to communicate with the Leaf.
User generated guide: http://www.mynissanleaf.com/wiki/index.php?title=Leaf_Battery_Application
Information displayed by Leaf Spy Lite:
* Battery State of Health (SOC)
* 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)
* Number of Quick Charge connections
* Number of L1/L2 Charge connections
* EVSE Max available amps
* EVSE voltage
If you are thinking of purchasing a used Leaf this app can help you learn more about the battery's condition.
Leaf Spy Lite lacks the logging function of the full version "Leaf Spy". Depending on your phone screenshots can be used to save this information before you update to Leaf Spy. Leaf Spy Lite also lacks the Service menu features of the Leaf Spy Pro.
Although Leaf Spy Lite provides an easy and inexpensive way to learn more about your Leaf's battery it also serves as a way to verify if you have a working system before purchasing the full version of the app (Leaf Spy) which display much more information about your Leaf or the Leaf Spy Pro version that adds a number of service type functions.
Support Forum for Leaf Spy Lite is http://www.mynissanleaf.com/viewtopic.php?f=44&t=14284
For more information about ELM-327 adapters and phone/devices that others have found to work with the app visit the CANbus subforum on www.mynissanleaf.com website (Board index Leaf Ownership Accessories / Mods subforum Leaf CANBus). Direct Link: http://www.mynissanleaf.com/viewtopic.php?f=44&t=12785