Shadowing Practice: Step-by-step Demonstration: High-Voltage Battery Repair - Learn English Speaking with Video
Creating lesson...
1
We're here at Precision Auto Service in Langley, BC, where a customer has brought in a 2016 Fiat 500E for repair.
2
The car was towed all the way from Vernon, BC, over 400 kilometers away from the shop.
3
The customer reported that the car would not go into ready mode.
4
The dealership had told the customer
5
that the entire battery pack would have to be replaced at a cost of around $20 ,000, and that was if a replacement could be found.
6
Precision Auto's diagnosis revealed a fault within the battery pack control module.
7
Replacement BPCMs are not readily available either, but Precision Auto is well connected and was able to source one from a company in Europe.
8
After the replacement module arrived, it was time to perform the repair.
9
The first step is to disconnect the 12 volt battery.
10
Yes, most EVs have a 12 volt battery to run accessories like lights, wipers and infotainment systems.
11
Next, the high voltage service plug is removed.
12
On this model it is located under the rear seat.
13
The service plug is like a giant fuse, this one is 350 amps.
14
Once removed, the high voltage is isolated to the inside of the battery pack, making it safe to work on the vehicle.
15
The battery pack is removed from under the car, so the car is lifted with a hoist.
16
On the Fiat, the battery pack extends from just rear of the front wheels almost to the back of the car.
17
The rearward part is where the fuel tank would be on a gas -powered car.
18
Several metal protective covers are removed.
19
This exposes the main high voltage cables, which are colored orange, and the cooling system hoses.
20
This battery is liquid cooled.
21
Even though the high voltage battery has been isolated, the technician puts on rubber electrical safety gloves before proceeding with the next steps.
22
To ensure there are no pinholes, the gloves are tested before each use.
23
This is done by rolling up the open ends of the gloves, pressurizing the air inside.
24
Then the gloves are held to the cheek to check for air leaks.
25
Once the gloves have passed the test, a pair of work over gloves are worn over them.
26
Now the technician is ready to disconnect the electrical cables from the battery pack, starting with the main line and then the secondary line.
27
He places a catchment vessel on a scissor lift table directly beneath the coolant hoses,
28
clamps the hoses, and then loosens the clamps where the hoses connect to the fittings on the battery pack housing.
29
The coolant drains into the catchment vessel.
30
to prevent further spillage while the battery pack is being removed he places caps on the coolant fittings
31
because the battery pack goes over the top of the rear axle the complete rear axle and suspension is removed.
32
When the battery pack is removed, it is going to drastically change the weight distribution of the vehicle,
33
so the technician secures the front and rear of the vehicle with supports beforehand.
34
The technician places the scissor lift table beneath the battery and raises it until it contacts the bottom of the battery case.
35
Now the main bolts can be removed
36
With all the bolts removed, the table and battery pack are lowered together.
37
This vehicle had a considerable amount of mud caked on its underside, so the battery pack cover must be cleaned before it can be opened.
38
No debris should be allowed to contaminate the interior of the battery case.
39
The technician uses a shop vac and compressed air to remove loose mud and dust.
40
Several dozen bolts hold the top and bottom halves of the battery pack case together.
41
These are removed.
42
The top half of the case can now be lifted off, exposing the components of the battery
43
The technician conducts some tests, verifying voltage readings to ensure there are no other problems.
44
Satisfied with the results, he disconnects the cables from the connectors on the BPC -M and removes the module.
45
He then installs the replacement module.
46
The battery pack is now ready to be reinstalled in the vehicle.
47
When an electric vehicle's high voltage battery malfunctions, it does not always mean that the entire battery pack must be replaced.
48
The most common reason a complete replacement will be recommended is
49
because currently there are very few businesses that possess the resources necessary to perform battery pack diagnosis and repair.
50
It is much easier to simply swap out the entire battery pack
51
that said the price of a replacement battery pack is usually prohibitive
52
and in many cases availability is scarce this will change over
53
time as with any new consumer product prices will come down as demand
54
and production increase this will be true not only for complete battery packs
55
but also for the internal components precision auto service is presently one of very few repair facilities
56
that have invested in the tools, equipment and training necessary to diagnose and repair high voltage batteries and other EV components.
57
This too will change as shops start to see a larger portion of their customer base driving electric vehicles.
✨ Recommend Video
C18
156 sentences
How Quantum Batteries Break Every Rule of Charging
Business EnglishUniversity StudentsWorking Adults
C11
106 sentences
EDFR GWO BTT Training Center - Nicolas Riou Wind
Business EnglishUniversity StudentsWorking Adults
B21
302 sentences
We Tore Apart Our Wrecked C8 ZR1… It’s Worse Than We Thought
Business EnglishUniversity StudentsWorking Adults
C13
99 sentences
12. Parallel Stent Retriever Technique in Mechanical Thrombectomy for Acute Ischemic Stroke
Business EnglishUniversity StudentsWorking Adults
C11
19 sentences
I Made an EMP Device... It Actually Works
Business EnglishUniversity StudentsWorking Adults
C14
140 sentences
PCB Inspection Methods & Common PCB Defects
Business EnglishUniversity StudentsWorking Adults
C11
166 sentences
What's The Best Supercharger? Roots vs Centrifugal vs Twin-Screw vs Electric
Business EnglishUniversity StudentsWorking Adults
C14
28 sentences
Comparing Low Voltage Vs. Medium Voltage Equipment on Solar Sites
Business EnglishUniversity StudentsWorking Adults
C14
291 sentences
How The World's Most Powerful Fighter Jet Engine Is Made
Business EnglishUniversity StudentsWorking Adults
C14
132 sentences
Intro to Pylontech’s US5000 48 Volt Lithium Battery
Business EnglishUniversity StudentsWorking Adults
C15
24 sentences
Phát âm chuẩn - Anh ngữ đặc biệt: Detroit Auto Show (VOA)
American AccentBusiness EnglishUniversity StudentsWorking Adults
B21
362 sentences
Celpip Listening Mock Test - 1 | Celpip Listening Test Practice With Answers - 2026
TOEFL PrepTOEIC PrepBusiness English
Vocabulary and speaking notes for this lesson
This video has 57 sentences and 852 words to shadow. The speech runs for 8:46. The speaker talks slowly, about 97 words per minute, so there is time to copy every sound. Only 77% of the words are among the 3,000 most common in English, so the vocabulary is demanding.
Key vocabulary in this video
15 words from the video worth learning, with pronunciation and meaning:
| Word | Pronunciation | Meaning |
|---|---|---|
| voltage noun | /ˈvəʊltɪd͡ʒ/ | The difference in electrostatic potential between two points in space, especially between live and neutral conductors or the earth. |
| replacement noun | /ɹɪˈpleɪsmənt/ | A person or thing that takes the place of another; a substitute. |
| glove noun | /ɡlʌv/ | An item of clothing, covering all or part of the hand and fingers, but usually allowing independent movement of the fingers. |
| technician noun | /tɛkˈnɪʃən/ | A person who studies or practises technology; an expert in a particular technology. |
| repair verb | /ˈɹiːpɛɚ/ | To restore to good working order, fix, or improve damaged condition; to mend; to remedy. |
| precision noun | /pɹɪˈsɪʒ.ən/ | The state of being precise or exact; especially, both exact and accurate. |
| module noun | /ˈmɑd͡ʒul/ | A self-contained component of a system, often interchangeable, which has a well-defined interface to the other components. |
| hose noun | /hoʊz/ | A flexible tube conveying water or other fluid. |
| component noun | /kəmˈpoʊ.nənt/ | A smaller, self-contained part of a larger entity. Often refers to a manufactured object that is part of a larger device. |
| bolt noun | /boʊlt/ | A (usually) metal fastener consisting of a cylindrical body that is threaded, with a larger head on one end. It can be inserted into an unthreaded hole up to… |
| automobile noun | /ˈɔː.tə.məˌbil/ | A type of motor vehicle designed to move on the ground under its own stored power and intended to carry a driver, a small number of additional passengers, and… |
| electrical adjective | /ɪˈlɛktɹɪkəl/ | Related to electricity (or electronics) |
| connect verb | /kəˈnɛkt/ | To join (to another object): to attach, or to be intended to attach or capable of attaching, to another object. |
| vessel noun | /ˈvɛsəl/ | Any craft designed for transportation on or in water, such as a ship, boat, or submarine. |
| beneath | /bɪˈniːθ/ | Below. |
Phrasal verbs you will hear
| Word | Meaning |
|---|---|
| come down verb | To descend, fall down, collapse. |
| go over verb | To look at carefully; to scrutinize; to analyze. |
| lift off verb | Synonym of take off (leave the ground and begin flight). |
| roll up verb | To dominate by accumulating; to become dominant by accumulating. |
| work over verb | To improve a prototype, or first draft. |
Grammar in this video
The structures the speaker uses most, with the exact words from the video:
| Structure | In the video |
|---|---|
| Passive voice be + past participle — the focus is on what happens, not who does it | was towed · be replaced · is removed |
| Present perfect have/has + past participle — a past action that still matters now | has brought · has been isolated · have passed |
Pronunciation to watch
- The “sh” and “zh” sounds: technician /tɛkˈnɪʃən/, precision /pɹɪˈsɪʒ.ən/, suspension /səˈspɛnʃən/, dealership /ˈdiːləʃɪp/, malfunction /ˌmælˈfʌŋk.ʃən/
- Long words — get the stress right: automobile /ˈɔː.tə.məˌbil/, electrical /ɪˈlɛktɹɪkəl/, considerable /kənˈsɪdəɹəbl̩/, availability /əˌveɪ.ləˈbɪl.ɪ.ti/, accessory /əkˈsɛs.(ə.)ɹi/
How to practise with this video
- Listen to the whole video once without speaking and note the words you do not know.
- Shadow it sentence by sentence at normal speed, repeating each one until your rhythm matches the speaker.
- Record yourself and compare with the original, paying attention to words like voltage, replacement, glove.
What is the Shadowing Technique?
Shadowing is a science-backed language learning technique originally developed for professional interpreter training and popularized by polyglot Dr. Alexander Arguelles. The method is simple but powerful: you listen to native English audio and immediately repeat it out loud — like a shadow following the speaker with just a 1–2 second delay. Unlike passive listening or grammar drills, shadowing forces your brain and mouth muscles to simultaneously process and reproduce real speech patterns. Research shows it significantly improves pronunciation accuracy, intonation, rhythm, connected speech, listening comprehension, and speaking fluency — making it one of the most effective methods for IELTS Speaking preparation and real-world English communication.