2012-2016 85 kWh (85/85D/P85D), Panasonic 18650 NCA, 16 modules
| Nominal voltage | 375 V |
|---|---|
| Operating range | 307.2–403.2 V* |
| Protocol | Tesla proprietary CAN. Battery-Emulator lists 'Tesla Model S & X (2012-2020)', all sizes, 1-star, 280/400 V, no balancing or parallel-pack support marked. No native hybrid-inverter support. |
| Home use (V2H) | Supported via Battery-Emulator (stationary home storage)* |
| Cooling | liquid (glycol) |
| Battery-Emulator support | · GitHub |
| Built-in contactors | Yes (source) |
| Dimensions | Whole pack: not confirmed from an OEM drawing. Module (EVShop): 69 x 31.5 x 8 cm. |
|---|---|
| Weight | 540 kg |
| Cell configuration | 96s74p (16 modules x 6s74p) |
| Connector | Tesla proprietary (EU: Type 2 Tesla variant) |
| Connectors | Pack HV connector with older-style spacer ring; 100 kWh packs need ring swap to fit pre-refresh S (wk057). |
| Used | from £1,133 6 |
|---|
* Data sourced from dalathegreat/Battery-Emulator firmware driver specifications and the Battery-Emulator Wiki.
Live eBay UK listings, fetched 25 October 2026. Prices and availability change.
16 modules in series, each 6s74p of 18650 NCA cells (96s74p total). Each module has its own BMB board daisy-chained to the pack BMS; contactors and pyro fuse inside the pack. Modules are commonly broken out as ~24 V (22.8 V nominal) 5.3 kWh blocks for DIY 24 V / 48 V storage.
tesla-club.eu: '7,104 lithium-ion battery cells in 16 modules wired in series... Each module contains six groups of 74 cells wired in parallel'. Juelich (HIMS): module of 444 18650 cells 'reaching an energy content of around 5.3 kWh'. EVTV teardown: module 25.4 kg, NCR18650 ~3.4 Ah; weighed pack 1330 lb (603 kg), versus commonly quoted 540 kg (roperld.com). Nominal voltage differs by source: Tesla ERG '400 volt', roperld 375 V (and '402 volts' for 16 modules), Voltreuse '~375V'. 375 is entered per roperld/Voltreuse, not an OEM figure. Usable kWh not confirmed from a source opened. 60 kWh sibling uses 14 modules (6216 cells, 352 V per roperld). EVShop module spec: 232 Ah, 22.8 V nominal/25.2 V max/19.8 V min, 69 x 31.5 x 8 cm, 26 kg, 750 A 10 s.
NHTSA DP19-005: OTA 2019.16.1 (15 May 2019) could cap max brick voltage on MY2012-2016 Model S with 1st/2nd-gen cells and heavy Supercharging; enabled on ~2,062 US cars; petition denied Oct 2021. Reuters 29 Jul 2021: $1.5M settlement over 10%/7% voltage reduction on 1,743 cars. Weak-short brick self-discharge failures common at high mileage (forum seller). Pack weight measured up to 603 kg. Tesla ERG: never open HV battery; re-ignition risk.
