BMW 330e Battery Pack Replaced! Dealer Quoted £20K — Our Fix Was WAY Smarter

This BMW 330e G20 had a total high-voltage battery failure. The dealer said “replace the whole battery” — costing over £10,000. But we found a smarter fix… and saved the day by replacing just one faulty pack inside the HV battery!

💡 We’ll show you:

Safe disassembly

Battery diagnostics

Pack swap

SME replacement & programming

Final range test + deep stats

🎯 Don’t replace your whole EV battery until you watch this!
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OGS Mechanics
Units 9–14, Millers Yard
Rear of 28 Long Lane
London N3 2QG

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⏱️ Timestamps:
00:00 – Intro: BMW 330e G20 Arrives with HV Fault
01:42 – Initial Checks & Safety Disconnect
03:15 – Diagnosis: Bad Cell in Pack #6
05:04 – Battery Removal & Pack Replacement
08:03 – SME (Battery Control Unit) Installation
10:42 – Reassembly & First Diagnostic Check
13:46 – Full Charge + Cell Voltage Comparison
16:45 – Road Test: Range & Cell Behavior
18:32 – Final Results & Cell Balance
21:10 – Cost Overview & What We Actually Did
22:30 – Was It Worth It? Workshop Summary
#BMW330e #BMWG20 #HybridBatteryRepair #EVBatterySwap #HighVoltageBattery
#BatteryPackReplacement #EVRepairUK #BMWHybrid #SMEProgramming #EVWorkshop
#RealMechanics #CarDiagnos
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Music from #InAudio: https://inaudio.org/
Track Name. Sport Trap Rock Workout by Infraction [No Copyright Music] / Are You Ready