flagship course
Portable and Wireless Charging Solutions
Understand power banks, wireless pads and shared charging kiosks: safety, standards, battery care and a simple service business.
about this course
What you will be able to do
- Understand Explain how batteries, chargers and wireless pads work.
- Apply Calculate capacity and charge time.
- Analyse Compare devices on real capacity.
- Evaluate Judge safety and quality.
- Create Plan a small charging service.
Task, condition and standard
Task
Test and compare three portable chargers, write a safety and quality note, and plan a small shared charging point with price and care rules.
Condition
Three chargers (practice or real), a meter or phone app, a spreadsheet, two peers and a mentor. No opening of battery packs.
Standard
Capacity test is repeated and averaged; safety rules are followed; unsafe items are rejected; business plan shows costs; peers rate Meets or better.
Who it is for: Shop owners, repair techs, event hosts, students. Requirements: none. Materials: lesson text, worked examples, templates, rubric, quiz, tracker.
lesson by lesson
8 modules with worked examples
Module 1 Batteries, units and real capacity 3 hUnderstand
You cannot compare power banks without understanding the units, and the number on the label is not what you can use.
- Energy is measured in watt-hours: Wh = volts x amp-hours. A 10,000 mAh cell at 3.7 V holds 37 Wh.
- Converting the voltage to 5 V and charging a phone wastes 20 to 40 per cent as heat.
- Cycles of charge and discharge age batteries; heat ages them faster.
- Labels often quote capacity at cell voltage, not usable output.
Activity. Calculate usable energy for three banks from their labels and assumed efficiency.
Standard to meet. Calculate the maths correctly, and state the assumptions.
Module 2 Wired charging, cables and standards 3 hUnderstand
Cables and plugs decide speed and safety.
- Connector types and power delivery levels set the maximum watts.
- Thin or damaged cables overheat and limit current.
- Match charger, cable and device; use certified products.
- Fast charging needs both ends to agree on voltage.
Activity. Build a compatibility table for five devices, chargers and cables.
Standard to meet. Check that the entries are correct and sourced.
Module 3 Wireless charging 3 hUnderstand
Coils and magnetic fields transfer energy without a plug.
- Pad and device must align; metal objects between them can heat up.
- Efficiency is lower than wired charging, so more heat and wasted energy.
- Standards exist for compatibility.
- Good for convenience, not always for speed.
Activity. Explain how wireless charging works and calculate wall energy for one charge.
Standard to meet. Explain the idea and one limit so that a peer can repeat them.
Module 4 Testing real capacity 4 hApply
Measure, do not trust the label.
- Fully discharge into a known load while recording watt-hours with a meter.
- Repeat three times and average.
- Compare with the label and record the percentage.
- Record temperature and time.
Activity. Test three banks and record results in a table with price per delivered Wh.
Standard to meet. Report results that include averages, percentage of label and cost per Wh.
Module 5 Safety, quality and transport 4 hEvaluate
Poor batteries can overheat or catch fire.
- Look for certification marks and protection circuits.
- Avoid swollen, hot or damaged units; isolate them in a safe container.
- Follow airline and transport rules for carrying batteries.
- Dispose of faulty batteries at a collection point.
Activity. Write a safety note, inspection routine and disposal procedure.
Standard to meet. Include inspection, isolation, transport rule and disposal.
Module 6 A shared charging service 4 hCreate
Kiosks and lending services serve events, cafes and transport hubs.
- Locations: cafes, events, transport hubs and gyms.
- Pricing by time or deposit; refund on return.
- Return, cleaning, serial tracking and loss control.
- Staff training, insurance and a complaint route.
Activity. Plan a small service with prices, loss assumptions and break-even.
Standard to meet. Show costs and prices with currency, and calculate break-even.
Module 7 Care, reuse and recycling 3 hApply
Extend the life of your devices.
- Avoid heat; store at about half charge.
- Recycle at collection points; never put batteries in general waste.
- Repair only with trained people.
- Label and track batteries.
Activity. Write care rules and a retirement rule.
Standard to meet. Write specific and measurable rules.
Module 8 Pilot and review 3 hCreate
Test the idea for a week.
- Run a trial with a small number of users.
- Record use, complaints and losses.
- Improve based on data.
- Decide whether to continue.
Activity. Present your pilot review.
Standard to meet. Use real numbers, and date one improvement.
assessment
How you are checked
Your evidence: test table, safety note, price sheet, plan. Two peers and one mentor mark it with this rubric. Pass: no criterion at 'Not yet'.
| Criterion | Not yet | Meets | Exceeds |
|---|---|---|---|
| Testing | Single test | Repeated | Repeated with analysis |
| Safety | Gaps | Complete | Complete and applied |
| Plan | No numbers | Numbers | Numbers with pilot data |
| Test log | Results from memory | Capacity, time and temperature logged for each charger | Logged results repeated once and the spread reported |
| Battery safety and shipping | Battery risks unchecked | Fire, heat and shipping rules for lithium batteries are written down | Rules checked on an official page and a storage plan tested |
Ten-question check, with model answers
Q1. Formula for Wh?
Model answer: Volts x amp-hours. (Covered in module 1: Batteries, units and real capacity. To pass that module: Calculate the maths correctly, and state the assumptions.)
Q2. Why losses?
Model answer: Conversion and heat. (Covered in module 1: Batteries, units and real capacity. To pass that module: Calculate the maths correctly, and state the assumptions.)
Q3. What marks safe goods?
Model answer: Certification marks and protection circuits. (Covered in module 5: Safety, quality and transport. To pass that module: Include inspection, isolation, transport rule and disposal.)
Q4. What do you do with a swollen bank?
Model answer: Isolate and dispose safely. (Covered in module 5: Safety, quality and transport. To pass that module: Include inspection, isolation, transport rule and disposal.)
Q5. Wireless pad efficiency issue?
Model answer: Lower efficiency, more heat. (Covered in module 3: Wireless charging. To pass that module: Explain the idea and one limit so that a peer can repeat them.)
Q6. Why store at half charge?
Model answer: Slows ageing. (Covered in module 7: Care, reuse and recycling. To pass that module: Write specific and measurable rules.)
Q7. How measure capacity?
Model answer: Discharge into a known load and measure Wh. (Covered in module 4: Testing real capacity. To pass that module: Report results that include averages, percentage of label and cost per Wh.)
Q8. Why repeat tests?
Model answer: To average errors. (Covered in module 4: Testing real capacity. To pass that module: Report results that include averages, percentage of label and cost per Wh.)
Q9. Name a loss control.
Model answer: Deposit. (Covered in module 6: A shared charging service. To pass that module: Show costs and prices with currency, and calculate break-even.)
Q10. Where recycle batteries?
Model answer: Collection points. (Covered in module 7: Care, reuse and recycling. To pass that module: Write specific and measurable rules.)
levels L1 to L7
The ladder, slide by slide
Seven slides, one per level. Open each for the slide text and the speaker notes.
Slide 1 L1 Basic: Batteries, units and real capacity
L1: learner can name charger parts. Focus module: Batteries, units and real capacity (Understand, 3 h). You cannot compare power banks without understanding the units, and the number on the label is not what you can use. Key points: Energy is measured in watt-hours: Wh = volts x amp-hours. A 10,000 mAh cell at 3.7 V holds 37 Wh. Converting to 5 V and charging a phone loses 20 to 40 per cent as heat. Cycles of charge and discharge age batteries; heat ages them faster. Labels often quote capacity at cell voltage, not usable output.
Speaker notes. Teach: open with the worked example. A 37 Wh bank at 70 per cent efficiency delivers about 26 Wh, enough for roughly two charges of a 12 Wh phone, not three. Then set the activity: Calculate usable energy for three banks from their labels and assumed efficiency. Mark against the standard: Calculate the maths correctly, and state the assumptions. Check at this level: Formula for Wh? Model answer: Volts x amp-hours.
Slide 2 L2 Awareness: Wired charging, cables and standards
L2: learner knows safety rules. Focus module: Wired charging, cables and standards (Understand, 3 h). Cables and plugs decide speed and safety. Key points: Connector types and power delivery levels set the maximum watts. Thin or damaged cables overheat and limit current. Match charger, cable and device; use certified products. Fast charging needs both ends to agree on voltage.
Speaker notes. Teach: open with the worked example. A 65 W charger with a cheap cable charges a laptop slowly because the cable cannot carry the current; a certified cable restores full speed. Then set the activity: Build a compatibility table for five devices, chargers and cables. Mark against the standard: Entries are correct and sourced. Check at this level: Why does a cheap cable slow a fast charger? Model answer: It cannot carry the current.
Slide 3 L3 Foundation: Wireless charging
L3: learner can calculate Wh. Focus module: Wireless charging (Understand, 3 h). Coils and magnetic fields transfer energy without a plug. Key points: Pad and device must align; metal objects between them can heat up. Efficiency is lower than wired charging, so more heat and wasted energy. Standards exist for compatibility. Good for convenience, not always for speed.
Speaker notes. Teach: open with the worked example. A wireless pad at 70 per cent efficiency wastes 30 per cent as heat, so a 15 Wh phone charge draws about 21 Wh from the wall. Then set the activity: Explain how wireless charging works and calculate wall energy for one charge. Mark against the standard: Explain the idea and one limit so that a peer can repeat them. Check at this level: Wireless pad efficiency issue? Model answer: Lower efficiency, more heat.
Slide 4 L4 Practitioner: Testing real capacity
L4: learner can test a bank. Focus module: Testing real capacity (Apply, 4 h). Measure, do not trust the label. Key points: Fully discharge into a known load while recording watt-hours with a meter. Repeat three times and average. Compare with the label and record the percentage. Record temperature and time.
Speaker notes. Teach: open with the worked example. A 20,000 mAh bank labelled 74 Wh delivers 55 Wh on average, 74 per cent of the claim. Its price per delivered Wh is higher than a competitor with an honest label. Then set the activity: Test three banks and record results in a table with price per delivered Wh. Mark against the standard: Report results that include averages, percentage of label and cost per Wh. Check at this level: How measure capacity? Model answer: Discharge into a known load and measure Wh.
Slide 5 L5 Specialist: Safety, quality and transport
L5: learner can compare devices. Focus module: Safety, quality and transport (Evaluate, 4 h). Poor batteries can overheat or catch fire. Key points: Look for certification marks and protection circuits. Avoid swollen, hot or damaged units; isolate them in a safe container. Follow airline and transport rules for carrying batteries. Dispose of faulty batteries at a collection point.
Speaker notes. Teach: open with the worked example. A swollen bank is isolated in a metal tin away from flammable items and taken to a collection point the same day. Then set the activity: Write a safety note, inspection routine and disposal procedure. Mark against the standard: Include inspection, isolation, transport rule and disposal. Check at this level: What marks safe goods? Model answer: Certification marks and protection circuits.
Slide 6 L6 Advanced: Care, reuse and recycling
L6: learner can run a kiosk team. Focus module: Care, reuse and recycling (Apply, 3 h). Extend the life of your devices. Key points: Avoid heat; store at about half charge. Recycle at collection points; never put batteries in general waste. Repair only with trained people. Label and track batteries.
Speaker notes. Teach: open with the worked example. A cafe has a labelled battery recycling box and a monthly collection. Banks are retired after 500 cycles or when capacity falls below 70 per cent. Then set the activity: Write care rules and a retirement rule. Mark against the standard: Rules are specific and measurable. Check at this level: Why store at half charge? Model answer: Slows ageing.
Slide 7 L7 Super expert: Pilot and review
L7: learner can audit safety. Focus module: Pilot and review (Create, 3 h). Test the idea for a week. Key points: Run a trial with a small number of users. Record use, complaints and losses. Improve based on data. Decide whether to continue.
Speaker notes. Teach: open with the worked example. Week one: 40 rentals and 2 losses; a deposit is added and losses stop. Average rental time is 4 hours, so one bank earns about 12 an hour. Then set the activity: Present your pilot review. Mark against the standard: Use real numbers, and date one improvement. Check at this level: What should a pilot record? Model answer: Use, complaints and losses.
jobs this leads to
Where this takes you
- Charging kiosk operator. Runs shared charging.
- Device repair assistant. Tests chargers.
- Retail adviser. Advises buyers.
- Quality inspector trainee. Rejects unsafe items.
- Event services assistant. Provides charging at events.
Next courses: car charging stations, solar basics, small electronics repair.
ten locations and global
Your place
Battery transport and recycling rules differ by place.
India (Bengaluru)
Language: English, Hindi, Kannada. Write numbers in INR. Personal data rule: Digital Personal Data Protection Act 2023. Skills frame to name in your evidence: National Skills Qualifications Framework (NSQF) and the national credit framework. Consumer rule: Consumer Protection Act 2019.
Netherlands (Eindhoven area)
Language: Dutch, English. Write numbers in EUR. Personal data rule: EU GDPR (Dutch: AVG), supervised by the Autoriteit Persoonsgegevens. Skills frame to name in your evidence: the Dutch qualification framework (NLQF) linked to the European Qualifications Framework. Consumer rule: EU and Dutch consumer rules (14-day cooling-off for online sales).
UAE (Dubai and Abu Dhabi)
Language: Arabic, English. Write numbers in AED. Personal data rule: Federal Decree-Law No. 45 of 2021 (personal data protection). Skills frame to name in your evidence: the emirate education and training regulators (for example KHDA in Dubai) and the national qualifications framework. Consumer rule: local consumer-protection law.
Brazil (Sao Paulo)
Language: Portuguese (Spanish and English support). Write numbers in BRL. Personal data rule: LGPD (Lei Geral de Protecao de Dados). Skills frame to name in your evidence: the national technical-education catalogue and the national S-system training bodies. Consumer rule: the Consumer Defence Code (CDC).
Canada (Toronto)
Language: English, French. Write numbers in CAD. Personal data rule: PIPEDA, with provincial rules where they apply. Skills frame to name in your evidence: the provincial colleges framework and the national credential-recognition guidance. Consumer rule: local consumer-protection law.
United States
Language: English, Spanish. Write numbers in USD. Personal data rule: state privacy laws (for example California), and COPPA for children under 13. Skills frame to name in your evidence: state and community-college credit systems. Consumer rule: local consumer-protection law.
Singapore
Language: English, Mandarin, Malay, Tamil. Write numbers in SGD. Personal data rule: Personal Data Protection Act (PDPA). Skills frame to name in your evidence: the Singapore national skills frameworks and the national credit system. Consumer rule: local consumer-protection law.
Australia
Language: English. Write numbers in AUD. Personal data rule: the Privacy Act 1988 and the Australian Privacy Principles. Skills frame to name in your evidence: the Australian Qualifications Framework (AQF) levels. Consumer rule: local consumer-protection law.
Hong Kong (Eastern Asia)
Language: Chinese (Cantonese, Mandarin), English. Write numbers in HKD. Personal data rule: the Personal Data (Privacy) Ordinance. Skills frame to name in your evidence: the Hong Kong Qualifications Framework. Consumer rule: local consumer-protection law.
Georgia and Israel (Western Asia)
Language: Georgian, Hebrew, Arabic, English. Write numbers in GEL or ILS. Personal data rule: the personal data law of the country where the learner lives. Skills frame to name in your evidence: the national qualifications framework of that country. Consumer rule: local consumer-protection law.
Cayman Islands (Caribbean)
Language: English. Write numbers in KYD. Personal data rule: the Data Protection Act. Skills frame to name in your evidence: the local education and training framework. Consumer rule: local consumer-protection law.
Mexico
Language: Spanish, English. Write numbers in MXN. Personal data rule: the federal law on personal data held by private parties. Skills frame to name in your evidence: the national competency certification system and the education ministry levels. Consumer rule: local consumer-protection law.
Global
The global version uses plain English, metric units, and your own currency. Machine translation is available in every language; the English text is the official text. Before you act for real, check your local rules with an adviser. Currency: USD (or your own currency, written next to every number).
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Draft
Draft flagship. Written in our own words. Not live. Check local rules with an adviser before you act for real.