Home » IBM ThinkPad T21 Compatible Laptop Adapter 16V 4.5A 72W (Fixed C-Tip)
IBM ThinkPad T21 Compatible Laptop Adapter 16V 4.5A 72W (Fixed C-Tip)
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IBM ThinkPad T21 Compatible Laptop Adapter 16V 4.5A 72W (Fixed C-Tip)
Product image 2
ThinkPad T Series

IBM ThinkPad T21 Compatible Laptop Adapter 16V 4.5A 72W (Fixed C-Tip)

SKU: AC16V72C-BP-K073
C$23.00
In stock
Orders placed after 3:00 PM (PT) will be processed on the next business day.

More Compatible Options

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  • Compatible Brands IBM
  • Model/OPN ThinkPad T21
  • Model Series ThinkPad T Series
  • Output Current 4.5A
  • Output Voltage 16V
  • Input Voltage AC100~240V / 50~60Hz
  • Power 72W
  • Tip Size 5.5*2.5mm
  • Warranty 1 Year
Ships from Canada • Fast local delivery

This replacement laptop adapter for IBM ThinkPad T21 is available for C$23.00 . 16V · 4.5A · 72W · Tip: 5.5*2.5mm.

Important Notes
  • Please make sure the DC output and tip size are compatible before placing the order.
Compatible Model
IBM ThinkPad 380D-MMX IBM ThinkPad 380Z Type 2365-Hxx IBM ThinkPad 385ED IBM ThinkPad 560E IBM ThinkPad 600E IBM ThinkPad 765D IBM ThinkPad A21 IBM ThinkPad i1200 Series IBM ThinkPad i1361 IBM ThinkPad i1500 Type 2611 IBM ThinkPad i1552 IBM ThinkPad R50e 1860 IBM ThinkPad R51 1841 IBM ThinkPad R51 2883 IBM ThinkPad R51e 1862 IBM ThinkPad R52 1843 IBM ThinkPad R52 1846 IBM ThinkPad T42 2376 IBM ThinkPad T42 2678
Original Part Number
IBM 02K0077 IBM 02K6454 IBM 02K6491 IBM 02K6496 IBM 02K6497 IBM 02K6543 IBM 02K6545 IBM 02K6547 IBM 02K6549 IBM 02K6550 IBM 02K6553 IBM 02K6583 IBM 02K6584 IBM 02K6585 IBM 02K6586 IBM 02K6587 IBM 02K6588 IBM 02K6661 IBM 02K6665 IBM 02K6666 IBM 02K6669 IBM 02K6670 IBM 02K6677 IBM 02K6699 IBM 02K6700 IBM 02K6701 IBM 02K6704 IBM 02K6744 IBM 02K6746 IBM 02K6750 IBM 02K6753 IBM 02K6754 IBM 02K6807 IBM 02K6808 IBM 02K6809 IBM 02K6810 IBM 02K6814 IBM 02K6815 IBM 02K6816 IBM 02K6881 IBM 02K6882 IBM 02K6884 IBM 02K6886 IBM 02K6887 IBM 02K6889 IBM 02K6890 IBM 02K6891 IBM 02K7009 IBM 04H6867 IBM 04H6903 IBM 04H6904 IBM 05K6554 IBM 08K8203 IBM 08K8204 IBM 08K8209 IBM 08K8212 IBM 11J8627 IBM 11J8974 IBM 11J9992 IBM 12J0536 IBM 12J0539 IBM 12J1441 IBM 12J1443 IBM 12J1444 IBM 12J2453 IBM 12J2584 IBM 12J2585 IBM 22P9010 IBM 22P9021 IBM 25.10064.031 - IBM IBM 25.10068.071 - IBM IBM 33G9616 IBM 36H6340 IBM 4A-PCP7H-AD - IBM IBM 60G1683 IBM 60G1684 IBM 73G1819 IBM 76H0139 IBM 76H0147 IBM 83H6739 IBM 85G5709 IBM 85G6670 IBM 85G6675 IBM 85G6682 IBM 85G6706 IBM 85G6709 IBM 85G6719 IBM 85G6720 IBM 85G6736 IBM 85G6737 IBM IBPS310 IBM IBPS380 IBM IBPS380X IBM IBPS390 IBM IBPS560 IBM IBPS560X2 IBM IBPSI1700 IBM LPAIB3 IBM LPAIB4 IBM LPAIB6
How can I confirm a replacement laptop adapter will work with my laptop?
Match the output voltage exactly, then confirm the connector type/size and polarity. Wattage can be the same or higher than your original adapter.
Where do I find the voltage and wattage information?
Check the label on your original charger (or the laptop’s bottom label). Look for Output (V) and Wattage (W). The voltage must match exactly.
Can I use an adapter with a different voltage?
In most cases, no. Using the wrong voltage can cause charging issues or damage your laptop.
Can I use a higher wattage adapter (for example 90W instead of 65W)?
Yes—higher wattage is usually OK as long as the voltage matches and the connector fits. Your laptop will only draw the power it needs.
How do I confirm the connector size is correct?
Compare the tip with your original charger and check the listed connector size (OD × ID). Even small differences (like 5.5×2.1mm vs 5.5×2.5mm) may not fit properly.
What does polarity mean, and why does it matter?
Polarity indicates which part of the plug is positive/negative. It must match your original adapter for safe and reliable charging.
My laptop uses USB-C charging. Can I use any USB-C charger?
Not always. Your laptop may require USB-C Power Delivery (PD) and a minimum wattage (such as 45W/65W/90W). Use a PD charger that meets or exceeds your laptop’s requirement.
Can this adapter be used internationally?
Many adapters support 100–240V input. Check your charger label. If it supports 100–240V, you can use it overseas with the correct plug adapter.
How can I find my laptop model on a Windows laptop?
If you are using a Windows laptop, you can find your laptop model using System Information:

• Step 1: Press Windows + R to open the Run window.
• Step 2: Type msinfo32 and click OK.
• Step 3: In the System Summary section, find System Model in the right pane.

Choosing the correct replacement adapter matters for safety and charging performance. Use this checklist before you place your order:

1. Match the Output Voltage

  • Check your original charger label for Output (for example, 19V).
  • The output voltage should match exactly.

2. Confirm Wattage / Amperage

  • Wattage can be the same or higher than your original adapter.
  • Using higher wattage is usually fine if voltage and connector match.

3. Check Connector Type & Size

  • For barrel tips, match the connector size (OD × ID).
  • For USB-C, ensure it supports USB-C PD and enough wattage for laptops.

4. Verify Polarity

  • Match the polarity symbol shown on your original adapter label.

💡 Battpit tip: Before using any laptop adapter, always check:
• Output voltage (must match exactly)
• Wattage (same or higher is OK)
• Connector size & polarity

All Battpit laptop adapters are designed with advanced built-in safety protection features to ensure reliable and stable charging performance. Our replacement AC adapters help protect your laptop, battery, and internal components during everyday use.

  • Over-voltage protection – Protects your laptop from sudden voltage spikes and unstable power supply.
  • Over-current protection – Prevents excessive current flow to maintain safe and consistent charging.
  • Short-circuit protection – Automatically shuts down the power adapter if a fault is detected.
  • Over-temperature protection – Helps reduce overheating risks for safer long-term use.

Each Battpit replacement laptop charger is engineered to meet high safety and quality standards, providing dependable performance for your notebook computer at home, office, or travel.

Safety & Compliance

Certified Quality You Can Trust

Battpit Canada replacement laptop batteries and AC adapters are selected with safety, compatibility, and compliance in mind. Products may meet common industry standards including RoHS, CE, UL, and ULC where applicable.

RoHS
RoHS Compliant Helps reduce restricted hazardous substances in electronic products.
CE
CE Marked Designed to meet applicable safety and quality requirements.
UL
UL Recognized Components Selected products may use UL recognized cells, components, or protection circuits.
ULC
ULC Safety Standard Supports safety confidence for products supplied to Canadian customers.
Why this matters: These compliance marks help customers choose a reliable replacement laptop battery, laptop charger, or AC adapter with built-in safety features such as over-charge, over-current, over-voltage, and short-circuit protection.