---
title: "Tesla Model S Battery Replacement & Module Repair (60/85/90D/100D) | EV Fix Guide"
description: "What is the true cost of a Tesla Model S battery replacement? Learn how independent EV laboratories repair individual modules and rebalance cells instead of paying $15k+ at Tesla."
canonical: https://evfixguide.com/repairs/tesla-model-s-battery-replacement
lang: en
last_updated: 2026-10-24
---

MODEL FOCUS: 2012–2020 TESLA MODEL S (60, 70, 85, P85, 90D, 100D)

# Tesla Model S Battery Replacement: Module-Level Rebuild vs. Full Pack Replacement

When an out-of-warranty Model S experiences sudden range degradation or a BMS lockout, Tesla Service quotes between **$13,000 – $20,000** for a complete pack replacement. Independent EV battery laboratories can restore your original pack for **$1,800 – $3,500** through targeted module replacement and precision cell balancing.

MODULE-LEVEL REBUILD

### Brick-Level Diagnosis

Instead of discarding 15 perfectly healthy modules, only the single degraded module is isolated and replaced.

PRECISION BALANCING

### <4mV Pack Balancing

All 96 series cell bricks are equalized to within 4 millivolts, preventing sudden voltage drop-offs below 20% SoC.

WARRANTY PROTECTION

### 12-Month Written Warranty

Independent EV laboratories provide comprehensive 12-month warranties on replaced modules and contactor assemblies.

![Tesla Model S and Model 3 in an independent EV workshop](https://evfixguide.com/assets/images/hero-workshop.jpg)

**Figure 1.3:** Independent EV diagnostic clean bay equipped with high-voltage hoist and pack telemetry equipment. Independent EV Specialists

## Frequently Asked Questions: Model S Battery

### Will the vehicle's full driving range return after repair?

Yes. Once all 96 cell groups are balanced to identical voltage thresholds, the BMS allows the car to safely utilize 100% of usable pack capacity without premature voltage sag cutoffs.

### Why is buying a used salvage battery risky?

Salvage packs from wrecked cars often sit uncharged at 0% SoC for months. This causes irreversible lithium dendrite formation and cell degradation, leading to premature failure shortly after installation.

🏢 Model S Battery Rebuild Referral

### Looking for a Vetted Model S Battery Rebuilder?

Don't spend $15,000+ on a full pack swap. Submit your Model S year and location and we will email you independent EV battery labs that do this repair.

[🏢 Connect with an Independent EV Lab 🚀](https://evfixguide.com/#find-shop-section) [Return to Home](https://evfixguide.com/)