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All the experts. My WattCat optimized reading used to be at 99% or 100% when fully charged but now is at 96% (see attached). Also TCU battery is at 90% in WattCat's Vehicle Details (also see attached). The actual rang is 10% to 20% lower than indicated 256 miles. Do I need to be concerned about battery health or it is normal due to lower ambient temperature (it is not too bad, 30 to 45F, lately).

Thanks.

 

[sciencegeek]

Battery SoC estimates are notoriously variable; yours seems pretty good and yes the temps matter a bit. FWIW, my TCU battery is also at 90%.

 

[Hotspur]

Battery SoC estimates are notoriously variable; yours seems pretty good and yes the temps matter a bit. FWIW, my TCU battery is also at 90%.

Mine, too. Batteries were just checked by the dealer and only the 12 volt "starter" battery was replaced.