EV1Dash is a program for Palm OS devices that will collect data from the EV1 and display it on the Palm OS device display. The intent is to provide more information to the driver so that range and performance can be optimized. Here is one of the displays. There are two other displays. One replaces the range estimates with amp hour information and the other shows the stream of bytes in a more raw format.
The display shows the following information:
* Amps
The amps currently being draw or put back into the pack is shown. Negative numbers indicate amps are being drawn from the batteries. Positive values indicate recharging is taking place. It very important to know how many amps are being drawn when trying to figure out what the maximum range.
* State of Charge (SOC)
The bar indicates the current state of charge of the pack. A little game I play is to see what how small I can get SOC drop to be on my commute to work. Having the SOC in 1% increments helps a lot.
* Power Use Range Estimates
There are 3 power use range bars; one for the instantaneous use, one for the last kilometer, and one for the whole trip. To the left, below the bar is the range the pack would contain if that power setting were maintained. The number on the right side below the bar is the range remaining in the pack based on the power setting.
* Voltage
Pack voltage.
* Trip Distance
Distance used for calculation of range and estimated battery capacity.
* Battery Capacity
The calculated battery capacity available to the user when fully charged. This is based on the amps drawn so far and the SOC. Optimally you should see 45Ah (53Ah * 85%) here after the batteries are broken in. If the capacity drops too low then there may be something wrong with the battery pack. Remember that capacity is effected by temperature. Please don't call GM until you are sure the numbers you are seeing are really abnormal.
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Supported operating systems:
Palm OS 3.x, Palm OS 4.x, Palm OS 5.x
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