Recent content by Pajda

Thanks for the info. This problem was also related to the issue of opening the SuC network for other car manufacturers, where I considered that the voltage limit of 410V for SuC V2 is the main technical reason and was waiting for the V3, which has 500V support from the beginning. However, Tesla...

Hi small question, the new Plaid pack seems to have internal cell connection of 108s (110s) which leads to a maximal charging voltage of around 460V. I assume that there is no problem with charging on the SuC V2, which according to the label has an output range of only 50-410V? Thx.

The nominal voltage of battery is 350 V (96s = the same as in Model S/X) and this gives 3.65 V nominal cell voltage. So the nominal cell capacity is then equal to 5000 mAh.

That difference means only that there is measured energy of the both charging and discharging process by the BMS. For example if you have a single 12.6 Wh cell, you must always supply 12.8-13 Wh (depends on charging rate) of energy for its full charge. Only then you are able to discharge the...

I absolutelly agree with Bipo. In EU there are much more than 5 times more AC public stations than fast DC stations and most of them are 3x32A (22 kW) with mennekes sockets. So the new 3x24A (16,5 kW) charger is definitely a downgrade for the most EU countries. On the other hand I am not sure...

It would be great if you can find this data for 60kWh pack: :smile:

By the way, it would be interesting to find out how long after that the DC-DC converter will run. Because ~240W is not negligible power drain from the main battery.

It seems to me, that you just confirmed everything what was stated in the first Wk post in this thread. :rolleyes: Your car total batery capacity is 81,6kWh = so your cells are ~11,48Wh/3200mAh (It fits with specification of NCR18650BE cells). Your car total usable capacity is 77,6kWh (4 kWh...

If there are cells similar to NCR18650GA in the 90kWh pack, then the asterisk is also necessary, but it would not be so big as with the 85kWh one. :rolleyes: Under the nominal conditions from datasheet: 0,5C charge / 0,2C discharge I have achieved best result (four cell samples) of 3385mAh and...

Ok we are now looking on the same graph. :smile: You need to read the voltage axis! Okashira in this particular test discharged the cell to 0V, but the nominal capacity for the most NCA cells is measured to 2,5V and you lose the manufacturer warranty if you discharge the cell below this value...

Maybe we both read different graphs, but till now I just did not seen any graph where the Tesla cell discharge significantly more than 3100mAh. And if I look on discharge voltage curves I don't see more than 3.6V nominal voltage, so these cells are 11.16Wh at best - exactly as described Wk and...

If they are close to NCR18650BE with 3200mAh rated capacity they can't be 11.9Wh. The only cells which are rated as ~12Wh at 3200mAh are LG or Samsung LCO cells with 4,35V charging voltage and 3,75V nominal voltage (I have tested them). But for NCA chemistry you need at least 3300mAh nominal...

At first I must say great thank you to wk057 for doing this tests and presenting results. But this discussion starts to be strange. So again I ask the fundamental question: Till now I don`t have lucky to get some Tesla cells for my own tests, but from my experiences with many other industrial...

There are two main reasons for choosing 18650 format cells for space limited apps. 1) 18650 format have the best energy density (both volumetric and gravimetric) than any other format/size over the last decade and it seems that this state will continue for next 10 years (Audi predicts that...

So far there was a rule that the 18650 size cells used in Tesla batteries were already commonly available on the market in industrial grade (for laptops, power tools etc.). Even the latest industrial equivalent of Tesla 90 kWh battery cells start its mass production in early spring this year. So...