Home » Lenovo 45N0312 Compatible Laptop Adapter 20V 4.5A 90W (Fixed 16-Tip)
Lenovo 45N0312 Compatible Laptop Adapter 20V 4.5A 90W (Fixed 16-Tip)
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Lenovo 45N0312 Compatible Laptop Adapter 20V 4.5A 90W (Fixed 16-Tip)
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Lenovo 45N0312 Compatible Laptop Adapter 20V 4.5A 90W (Fixed 16-Tip)

SKU: AC20V90+-+16+Tip-BP-K029
C$25.00
In stock
Orders placed after 3:00 PM (PT) will be processed on the next business day.
🔥 This product has a special offer: Buy 2 eligible items, get 1 item at 50% OFF
Discount applies to the lower-priced item in each pair. Repeats automatically. Not combinable with other offers.

More Compatible Options

→ Shop all Lenovo laptop adapters → Shop all Lenovo laptop batteries
  • Compatible Brands Lenovo
  • Model/OPN 45N0312
  • Output Current 4.5A
  • Output Voltage 20V
  • Input Voltage AC100~240V / 50~60Hz
  • Power 90W
  • Tip Size 8.0*5.5mm
  • Warranty 1 Year
Ships from Canada • Fast local delivery

This replacement laptop adapter for Lenovo 45N0312 is available for C$25.00 — Buy 1, get 1 at 50% off . 20V · 4.5A · 90W · Tip: 8.0*5.5mm.

Important Notes
  • Please make sure the DC output and tip size are compatible before placing the order.
Compatible Model
Lenovo ThinkPad X Series ThinkPad X121eLenovo ThinkPad X Series ThinkPad X130e 2339Lenovo ThinkPad X Series ThinkPad X131e 3367-8FULenovo ThinkPad X Series ThinkPad X131e 3367-9FULenovo ThinkPad X Series ThinkPad X131e 3368-4QULenovo ThinkPad X Series ThinkPad X131e 3368-4UULenovo ThinkPad X Series ThinkPad X131e 3371-7LULenovo ThinkPad X Series ThinkPad X131e 3371-7MULenovo ThinkPad X Series ThinkPad X131e 3371-7PULenovo ThinkPad X Series ThinkPad X131e 3372-2FULenovo ThinkPad X Series ThinkPad X131e 3372-2JULenovo ThinkPad X Series ThinkPad X140e 20BM0009USLenovo ThinkPad X Series ThinkPad X140e 20BM000BUSLenovo ThinkPad X Series ThinkPad X201s 5413Lenovo ThinkPad X Series ThinkPad X220 TabletLenovo ThinkPad X Series ThinkPad X220 Tablet 4296-38ULenovo ThinkPad X Series ThinkPad X220 Tablet 4298-43ULenovo ThinkPad X Series ThinkPad X220 Tablet 4299-2XULenovo ThinkPad X Series ThinkPad X220t 4296Lenovo ThinkPad X Series ThinkPad X220t 4301Lenovo ThinkPad X Series ThinkPad X230 2306Lenovo ThinkPad X Series ThinkPad X230 2320Lenovo ThinkPad X Series ThinkPad X230 2320-38ULenovo ThinkPad X Series ThinkPad X230 2320-8TULenovo ThinkPad X Series ThinkPad X230 2320-8VULenovo ThinkPad X Series ThinkPad X230 2320-HNULenovo ThinkPad X Series ThinkPad X230 2320-J9ULenovo ThinkPad X Series ThinkPad X230 2320-KJULenovo ThinkPad X Series ThinkPad X230 2320-L9ULenovo ThinkPad X Series ThinkPad X230 2320-LTULenovo ThinkPad X Series ThinkPad X230 2322Lenovo ThinkPad X Series ThinkPad X230 2324-22GLenovo ThinkPad X Series ThinkPad X230 2324-3PGLenovo ThinkPad X Series ThinkPad X230 2324-3RULenovo ThinkPad X Series ThinkPad X230 2324-9WULenovo ThinkPad X Series ThinkPad X230 2325-2RULenovo ThinkPad X Series ThinkPad X230 2325-2TULenovo ThinkPad X Series ThinkPad X230 2325-6DGLenovo ThinkPad X Series ThinkPad X230 2325-6FGLenovo ThinkPad X Series ThinkPad X230 2325-8AULenovo ThinkPad X Series ThinkPad X230 2325-AKGLenovo ThinkPad X Series ThinkPad X230 2325-B5GLenovo ThinkPad X Series ThinkPad X230 2325-BCGLenovo ThinkPad X Series ThinkPad X230 Tablet 3435-2UULenovo ThinkPad X Series ThinkPad X230 Tablet 3435-2WULenovo ThinkPad X Series ThinkPad X230 Tablet 3438-23GLenovo ThinkPad X Series ThinkPad X230 Tablet 3438-3UULenovo ThinkPad X Series ThinkPad X230i 2324-7PGLenovo ThinkPad X Series ThinkPad X230i 2324-97GLenovo ThinkPad X Series ThinkPad X230i 2325-A8GLenovo ThinkPad Twist Series ThinkPad Twist S230uLenovo ThinkPad Twist Series ThinkPad Twist S230u 20C4-26ULenovo ThinkPad Twist Series ThinkPad Twist S230u 3347-28GLenovo ThinkPad Twist Series ThinkPad Twist S230u 3347-7EULenovo ThinkPad T Series ThinkPad T410iLenovo ThinkPad T Series ThinkPad T430 2342-32ULenovo ThinkPad T Series ThinkPad T430 2342-38ULenovo ThinkPad T Series ThinkPad T430 2344-5GULenovo ThinkPad T Series ThinkPad T430 2344-6RULenovo ThinkPad T Series ThinkPad T430 2347-G3GLenovo ThinkPad T Series ThinkPad T430 2347-JAULenovo ThinkPad T Series ThinkPad T430 2347-JGULenovo ThinkPad T Series ThinkPad T430 2349-G8ULenovo ThinkPad T Series ThinkPad T430 2349-GAGLenovo ThinkPad T Series ThinkPad T430 2349-H2GLenovo ThinkPad T Series ThinkPad T430 2349-JPGLenovo ThinkPad T Series ThinkPad T430 2349-LMGLenovo ThinkPad T Series ThinkPad T430 2349-LNGLenovo ThinkPad T Series ThinkPad T430 2349-LRULenovo ThinkPad T Series ThinkPad T430i 2344-BDGLenovo ThinkPad T Series ThinkPad T430i 2344-FFGLenovo ThinkPad T Series ThinkPad T430s 2353-68ULenovo ThinkPad T Series ThinkPad T430s 2353-6EULenovo ThinkPad T Series ThinkPad T430s 2355-HCULenovo ThinkPad T Series ThinkPad T430s 2355-HFGLenovo ThinkPad T Series ThinkPad T430s 2355-HFULenovo ThinkPad T Series ThinkPad T430s 2355-HGGLenovo ThinkPad T Series ThinkPad T430s 2356-GJGLenovo ThinkPad T Series ThinkPad T430s 2356-HCGLenovo ThinkPad T Series ThinkPad T430s 2356-HCULenovo ThinkPad T Series ThinkPad T430s 2356-LAGLenovo ThinkPad T Series ThinkPad T430s 2356-LCGLenovo ThinkPad T Series ThinkPad T430s 2356-MMGLenovo ThinkPad T Series ThinkPad T430u 335168CLenovo ThinkPad T Series ThinkPad T430u 3351A32Lenovo ThinkPad T Series ThinkPad T430u 3351A63Lenovo ThinkPad T Series ThinkPad T430u 3351A67Lenovo ThinkPad T Series ThinkPad T430u 3352-2SULenovo ThinkPad T Series ThinkPad T430u 3352-3CULenovo ThinkPad T Series ThinkPad T430u 3353-37GLenovo ThinkPad T Series ThinkPad T430u 3353-3TGLenovo ThinkPad T Series ThinkPad T430u 6273-2SGLenovo ThinkPad T Series ThinkPad T430u 8614-6WULenovo ThinkPad T Series ThinkPad T430u 8614-APULenovo ThinkPad T Series ThinkPad T510i 4484Lenovo ThinkPad T Series ThinkPad T530 2359-4LULenovo ThinkPad T Series ThinkPad T530 2392Lenovo ThinkPad T Series ThinkPad T530 2392-ATGLenovo ThinkPad T Series ThinkPad T530 2392-FMULenovo ThinkPad T Series ThinkPad T530 2394-35ULenovo ThinkPad T Series ThinkPad T530 2394-43ULenovo ThinkPad T Series ThinkPad T530 2394-44GLenovo ThinkPad T Series ThinkPad T530 2394-5ZGLenovo ThinkPad T Series ThinkPad T530 2394-61GLenovo ThinkPad T Series ThinkPad T530 2394-64ULenovo ThinkPad T Series ThinkPad T530 2394-7FGLenovo ThinkPad T Series ThinkPad T530 2394-7HGLenovo ThinkPad T Series ThinkPad T530 2429-45ULenovo ThinkPad T Series ThinkPad T530 2429-5RULenovo ThinkPad T Series ThinkPad T530 2429-5WGLenovo ThinkPad T Series ThinkPad T530 2429-5ZULenovo ThinkPad T Series ThinkPad T530 2429-6HGLenovo ThinkPad T Series ThinkPad T530 2429-6JGLenovo ThinkPad T Series ThinkPad T530 2429-70GLenovo ThinkPad T Series ThinkPad T530 2429-7CULenovo ThinkPad T Series ThinkPad T530 2429-84GLenovo ThinkPad T Series ThinkPad T530 2429-8DGLenovo ThinkPad T Series ThinkPad T530 2429-8HGLenovo ThinkPad T Series ThinkPad T530i 2392-CMGLenovo ThinkPad S Series ThinkPad S230u Twist 33472K9Lenovo ThinkPad L Series ThinkPad L430 2465-2EULenovo ThinkPad L Series ThinkPad L430 2465-2KULenovo ThinkPad L Series ThinkPad L430 2465-5RGLenovo ThinkPad L Series ThinkPad L430 2465-5SGLenovo ThinkPad L Series ThinkPad L430 2465-5UGLenovo ThinkPad L Series ThinkPad L430 2465-7PULenovo ThinkPad L Series ThinkPad L430 2466-33GLenovo ThinkPad L Series ThinkPad L430 2466-63GLenovo ThinkPad L Series ThinkPad L430 2468-58GLenovo ThinkPad L Series ThinkPad L430 2469-28ULenovo ThinkPad L Series ThinkPad L430 2469-2XULenovo ThinkPad L Series ThinkPad L530 2478-2DULenovo ThinkPad L Series ThinkPad L530 2478-2XGLenovo ThinkPad L Series ThinkPad L530 2478-2XULenovo ThinkPad L Series ThinkPad L530 2478-5PULenovo ThinkPad L Series ThinkPad L530 2478-5QULenovo ThinkPad L Series ThinkPad L530 2479-32GLenovo ThinkPad L Series ThinkPad L530 2479-3BULenovo ThinkPad L Series ThinkPad L530 2479-3EULenovo ThinkPad L Series ThinkPad L530 2479-64ULenovo ThinkPad L Series ThinkPad L530 2481-36GLenovo ThinkPad L Series ThinkPad L530 2481-3LGLenovo ThinkPad L Series ThinkPad L530 2481-4QULenovo ThinkPad L Series ThinkPad L530 2485-25ULenovo ThinkPad Edge Series ThinkPad Edge 11 2545Lenovo ThinkPad Edge Series ThinkPad Edge E10Lenovo ThinkPad Edge Series ThinkPad 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Original Part Number
92P1157 92P1154 92P1107 92P1108 92P1104 92P1159 92P1156 PA-1900-17I 41R4493 92P1211 92P1109 40Y7659 92P1110 40Y7696 92P1155 92P1214 92P1112 92P1106 92P1111 92P1212 92P1114 93P5026 PA-1900-081 PA-1650-161 92P1160 92P1158 92P1153 42T4425 PA-1650-53I 45N0120 42T5000 45N0324 45N0210 45N0208 45N0110 45N0200 45N0318 45N0122 45N0080 45N0184 42T4417 40Y7672 40Y7674 40Y7663 45N0112 45N0316 45N0055 45N0114 40Y7664 45N0304 40Y7670 42T4423 40Y7665 42T5283 42T4419 45N0202 42T4418 45N0198 40Y7662 40Y7666 45N0182 42T4431 45N0053 42T4429 45J7717 45N0214 45N0320 45N0068 45N0308 45N0192 40Y7671 45N0212 45N0314 41R4322 45N0196 40Y7661 45N0194 45N0306 45N0059 45N0322 45N0116 42T4427 40Y7667 45N0118 45N0180 42T4439 40Y7668 45N0057 45N0186 40Y7673 42T4421 45N0310 42T5282 40Y7669 92P1103 42T4416 45N0312 45N0302
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.