Recent content by taraquin

Yeah, it seems so. Running high will increase temp faster at a somewhat higher consumption, but at steady state high and low will behave similar.

I visited a friend with Model Y, entered the service mode and got some answears :) Fanspeed is somewhat linked to compressor rpm. For instance at 21C auto high fanspeed ran compressor at 6000 rpm, low ran it at 4500. In manual mode fanspeed of 1 ran it at 2800-3300rpm, fanspeed of 6 at...

Yes :) auto. I aint got heat pump in my model 3, this is just out of curiosity :)

My initial qeurstion was how running fanspeed on lo, med or high affects efficiency and longevity of components :)

Ofcourse, but I was curious which of the claims were correct :)

The geekninside wants to know. I dont have a Y with heat pump now.

Preserving hardware and efficiency :)

After some conflicting info on heat pump efficiency/longevity I ask the experts here: Claim 1: Running the heat pump at low fan setting (comfort aside) is more efficient as less air needs to be heated cooled. Some observations in servicemode where lower fanspeed equals lower compressor rpm...

Now that winter is coming I would recommend you upgrade. The improvements 2021.4.11 brought to regen/cold weather charging was really worth it :)

It's not a common problem, but if you partially charge them for long periods of time, the BMS has more trouble reading actual SOC due to same voltage at low and high SOC. Chineese owners has reported this isdue, but Tesla may have found ways to read SOC in other ways than rely on voltage to fix...

I would charge it to 100% atleast once a month, but except for that charge it to the level you need. The longevity of a LFP is about the same sitting at 100% as it is at 50%. A NCA\NMC degrades significantly if left at 100% for long periods, but thrives at 20-60%.

Point of charging a LFP to 100% regularely is to balance the battery as the BMS can struggle with estimating true range since voltage curve is flat. It`s much easier on NMC\NCA where for instance 4.2V is 100%, 4.0V is 80% etc. On LFP 30 and 100% both can be 3.4V so unless you charge it to 100%...

Thing about LFP is that they have a flat voltage curve and usually maxes out at around 3.4V-ish so at 30% or 100% they can be 3.4V. High voltages over time is a reason for concern, on NCA and NMC 4.2V is typically max,, especially in high temps and can cause degradation on most types of li-ion...

It's always been like that. Long periods of regen will be restricted if soc is high, but charging can occur at higher rate over time. Tesla probably have their reasons.

This happends when soc is high when going downhill. I always had this in my TMS and now my TM3. The higher the soc, the shorter period you can sustain high regen even if batterytemp is fine. If your soc was 20% there would not gave been any restrictions on regen. After the 4.11/12 update it...