Idle: 40mA @12V
Cellular Network Registration: 100mA @12V
Network activity: 80mA @12V
The vast majority of this is the cellular modem (the PIC we use has minimal power consumption). Worst case we see seems to be 100mA @12volts, or about 1.2watts.
Based on a full 53KWh main battery, that would power the OVMS module (worst case) for about 44,166 hours (>5 years).
My test bench runs off an 8-pack of 1.2volt 1.9Ah batteries (~ 9.6volts 1.9Ah, or 18.24Wh). Theoretically, worst case, that would drain to zero in about 15hours. I get at least that in normal development use.
Anyway, bottom line the OVMS module draws between 40mA and 100mA @12V. Not sure about the Tattler. I guess the CPU will draw more, and the GSM modem less, compared to OVMS.
Has anyone done the calculations for a 5% SOC loss in a week? I really can't believe the VMS is anywhere near that - it must be fans and pumps.
The coolant pump on v2.5 cars turns off after the car is idle (off) for 5 minutes. It seems to wake up once every 24 hours. Is that now the same for the earlier v1.5 cars, or is somewhere in between that and 24 hours-a-day?
That Little Water Pump
The original v1.5 problem was reportedly 24.5kWh a week (46% of SOC @53kWh).