Lenovo ThinkPad P15 Gen 1 charger

Replacement 230W Barrel (Lenovo slim tip) adapter — verified compatible.

💻
Your laptop
Lenovo ThinkPad P15 Gen 1
20ST / 20SU
Exact match
🔌
Compatible charger
Lenovo 230W Slim-Tip Adapter
Barrel (Lenovo slim tip) · 230W · 20V DC 11.5A
VerifiedLenovo slim-tip

Matched from manufacturer specs.

INPUT 100–240VOUTPUT 20V 3.25A= 65W
Quick check: make sure the wattage matches

This charger supplies 230W over Barrel (Lenovo slim tip). To find what your laptop needs, read the OUTPUT line on your current charger — the volts × amps is the wattage (e.g. 20V × 3.25A = 65W) — or check the label on the underside of your laptop. The same connector at an equal-or-higher wattage is safe.

Note: Workstation - use the 230W Lenovo slim-tip adapter; it safely covers the 170W and 230W configs. Do not under-power.

Not sure? Snap a photo on the home page and we'll read it for you.

  • ✓230W output safely covers this laptop
  • ✓Connector: Rectangular slim tip (yellow)

Why this charger is safe

  • ✓
    Higher wattage is generally safe
    Example: a 90W HP Smart adapter safely powers a 65W HP laptop. A 65W USB-C PD charger safely powers a 45W USB-C laptop.
  • ✓
    Lower wattage is not safe for full performance
    Most relevant for XPS 15/17 (130W) and Spectre x360 15/16 (135W) where a 65W charger is insufficient.
  • ✓
    Barrel tip size must match exactly
    A 7.4mm plug will not fit a 4.5mm jack and vice-versa. Dell and HP barrel tips are NOT interchangeable even at the same diameter (different pin/signalling).
  • ✓
    HP Smart Pin and Dell barrels are brand-specific
    HP Smart adapters carry a centre 'sense' pin used for wattage negotiation; Dell uses its own 1-wire ID. Mismatched brand can cause 'AC adapter not recognised' and refusal to fast-charge.
How we verified this＋
Last checked: 8 Jun 2026
Connector: Lenovo slim-tip (Rectangular slim tip (yellow)) · Lenovo slim-tip DC barrel
Sources we checked (1)

Which charger does the Lenovo ThinkPad P15 Gen 1 use?

The Lenovo ThinkPad P15 Gen 1 (20ST / 20SU) charges with a 230W Barrel (Lenovo slim tip) adapter. A charger with the same connector at an equal or higher wattage is safe — your laptop only draws the power it needs. Not sure what yours shipped with? Snap a photo of the label and we'll confirm it.

Connector: Lenovo slim-tip — how to identify it→

Related guides

Frequently asked questions

What charger does the Lenovo ThinkPad P15 Gen 1 use?＋

The Lenovo ThinkPad P15 Gen 1 uses a 230W Barrel (Lenovo slim tip) charger (Lenovo 230W Slim-Tip Adapter), 20V DC.

Can I use a higher-wattage charger with the Lenovo ThinkPad P15 Gen 1?＋

Yes. With the same Barrel connector, a charger of equal or higher wattage is safe — the laptop draws only the power it needs.

Is the Lenovo ThinkPad P15 Gen 1 USB-C or barrel charging?＋

The Lenovo ThinkPad P15 Gen 1 charges over a round barrel plug, not USB-C.

How do I confirm the right charger for my exact Lenovo ThinkPad P15 Gen 1?＋

Read the OUTPUT line on your original charger (volts × amps = watts, e.g. 20V × 3.25A = 65W) or the label under your laptop. Workstation - use the 230W Lenovo slim-tip adapter; it safely covers the 170W and 230W configs. Do not under-power.

Related chargers