HP laptop chargers are not universal. Two HP laptops can look similar but use different connector types, wattage ratings, or charging standards (USB-C vs barrel plug). The safest way to identify the correct charger is to match four things: connector type, output voltage, wattage, and (when applicable) the HP part/spare number.
Fast answer: How do I identify my HP laptop charger?
Start with the label on your current charger (or the original charger if you still have it). Note the Output voltage (V) and Output current (A) or Wattage (W), then confirm the connector type (USB-C or barrel plug) and the plug size/shape. If you can’t access the charger label, use the laptop’s model/product number as a cross-check, but always confirm voltage and connector before buying.
Step 1: Check the charger label (most reliable)
Look at the text printed on the power adapter. You’ll typically see something like:
- Input: 100–240V ~ 50/60Hz (this is normal and not the key matching value)
- Output: for example 19.5V ⎓ 3.33A
- Wattage: sometimes shown directly (e.g., 65W), or you can calculate it
How to calculate wattage (if it isn’t shown)
Watts (W) = Volts (V) × Amps (A). Example: 19.5V × 3.33A ≈ 65W.
Step 2: Confirm the connector type (USB-C vs barrel)
If your HP charges via USB-C
- You need a charger that supports USB-C Power Delivery (USB-C PD) at sufficient wattage.
- Not all USB-C chargers are equal—some provide limited power and may charge slowly or not at all under load.
- Use a quality USB-C cable rated for the wattage you need (a weak cable can limit charging).
If your HP uses a barrel connector
- HP barrel plugs come in multiple sizes and styles.
- Some HP barrel chargers include a center “smart pin” used for identification.
- The plug must fit firmly. A “nearly fitting” plug can cause intermittent charging or connector damage over time.
Step 3: Match the output voltage (this must be the same)
Output voltage must match your original adapter. Many HP chargers are around the 19–20V range, but you should not guess. Using the wrong voltage can cause charging failure and may risk damage.
Step 4: Choose the correct wattage (same or higher is usually OK)
Wattage is the adapter’s maximum power capability. In general:
- Same wattage is ideal.
- Higher wattage is typically fine (the laptop will draw only what it needs).
- Lower wattage may work for light use but can lead to slow charging, battery drain while plugged in, or performance throttling.
Step 5: Use HP part/spare numbers as a cross-check (optional but helpful)
Some HP adapters include an HP spare/part number on the label. If you have it, it’s a strong compatibility clue. If you don’t, you can still identify the correct charger using voltage + wattage + connector type/size.
What if you don’t have the original charger?
If you’re missing the original adapter, use this order of priority:
- Look up your current battery/charger info (if you have any adapter that works, read its label).
- Check your laptop’s model/product number (often on the bottom cover or inside the battery/maintenance compartment).
- Confirm charging port type (USB-C vs barrel) and the exact plug size needed.
- Buy from a seller with clear compatibility guidance and a return policy (in case HP used multiple charger variants for your series).
Common symptoms of using the wrong HP charger
- “Plugged in, not charging” (often wattage too low, PD profile mismatch, or connector/ID mismatch)
- Very slow charging (underpowered adapter or cable limits)
- Charging starts and stops (loose connector or damaged cable/port)
- Adapter gets unusually hot (overloaded or failing adapter)
Before you buy: 30-second checklist
- Is the charger USB-C PD or barrel—and does it match your port?
- Does the output voltage (V) match your original?
- Is the wattage (W) the same or higher than required?
- Does the connector size/shape match exactly (especially for barrel plugs)?
FAQ
How do I identify my HP laptop charger?
Read the adapter label and match the output voltage (V) first, then match wattage (W) and connector type (USB-C vs barrel). For barrel plugs, confirm the exact plug size and whether a center smart pin is required.
Can I use a higher wattage HP charger?
Usually yes. A higher-watt adapter can supply more power when needed, as long as the output voltage matches and the connector type/size is correct.
Can I use any USB-C charger for an HP laptop?
Only if your HP supports USB-C charging and the charger supports USB-C Power Delivery at enough wattage. A low-power USB-C charger may charge slowly or fail to charge under heavy use.
What happens if I use the wrong voltage charger?
It may not charge and can risk damage. Always match the output voltage printed on your original adapter label.