Yesterday, Elon said the Model 3 Mid Range battery has fewer cells than the Long Range battery and is not a software limited version. But how many cells does it have? I decided to have a closer look. Luckily, Tesla has also released the weight numbers.

**Step 1:** The weight difference between MR and SR is 137 lb (62 kg).

If you open the Model 3 page here and scroll down to the Specs section, it shows 3,686 lb for MR. In comparison, the presskit page says 3,549 lb for SR. The difference is 137 lb (62 kg).

**Step 2:** 137 lb equals 768 cells

A Model 3 LR module with 23*46= 1,058 cells weighs 191 lb (source). Therefore 137 lb should equal to 759 cells but we need a number that’s a multiple of 96 because all Model 3 packs have 96 bricks. Therefore 759 is rounded up to 768.

**Step 3:** The MR pack has 2,976 + 768= 3,744 cells

The SR pack has 2,976 cells (source). If we add the 768 cell difference that we calculated, the Mid Range battery should have 3,744 cells.

Here is a summary:

- SR Battery: 96 bricks with 31 cells each. Total 2,976 (Source)
- MR Battery: 96 bricks with 39 cells each. Total 3,744 (Estimate)
- LR Battery: 96 bricks with 46 cells each. Total 4,416 (Source)

Bricks are in series. Pack voltage is 96 * 3.7V= 355.2V for all Model 3 packs.

Usable battery capacity based on cell counts:

- SR Battery: 52.75 kWh (Estimate)
- MR Battery: 66.36 kWh (Estimate)
- LR Battery: 78.27 kWh (Source: page 6 footer)

Based on these numbers and using other data published by the EPA, I’m calculating the following range numbers for different Tesla models including the Model 3 MR.

Update (30 Nov 2018): This range table is outdated. You can find the latest version here.

Update (30 Nov 2018): This range table is outdated. You can find the latest version here.

Range in km:

Update (30 Nov 2018): This range table is outdated. You can find the latest version here.

Range is still in MI. Only Quick charge is in KM.

The cells in blue are important.

Understood … but the EPA rating conversion is too 😉

I have now updated the table.

How do you know the range goes down by 35 miles for M3 LR RWD with 19″ sport wheels vs 18″ Aero with covers on? Thank you.

Hi. See the title “Different wheel options” in the opening message here: https://model3ownersclub.com/threads/tesla-model-s-x-3-range-at-55-60-65-70-75-80-mph.5496/