45W Laptop Charger (20V 2.25A) with 4.0 x 1.7mm Round Tip – Replacement for selected Lenovo IdeaPad & Yoga models
Product description
What it is and why people buy it
This 45W laptop charger is designed as a replacement AC adapter for certain Lenovo IdeaPad and Yoga models. The useful bit here is that it sticks to the same core electrical pattern mentioned in the details: 20V output at 2.25A (45W), using a 4.0 x 1.7mm round tip. If your current charger is missing, worn out, or has a damaged cable, this type of spec match is what usually matters most—more than the brand name printed on the brick.
On paper, it’s also positioned as a safety-focused alternative thanks to multiple protection features (over-current, incorrect voltage, short circuit, and internal overheating) and a cable design that includes an anti-interference magnetic ring. That doesn’t make it “better” for every scenario, but it gives you something sensible to look for when you’re replacing a charger you’ll use every day.
A small limitation to keep in mind: the information provided points to a specific connector size and to particular Lenovo model families. If your laptop uses a different connector or expects different voltage/current behaviour, a “looks similar” charger won’t be enough.
Key specifications to check before you buy
If you want the purchase to go smoothly, you’re really checking three things: the output voltage/current, the connector size, and whether your laptop is in the compatibility list.
- Output: DC 20V, 2.25A, 45W
- Input: AC 100–240VAC, 50/60Hz
- Connector size: 4.0 x 1.7mm round tip
The pack includes 1 x VUOHOEG Laptop Charger plus a User’s Manual.
Also worth noting: it mentions compatibility with a fairly long list of IdeaPad/Yoga models and several common Lenovo part numbers (P/N and adapters listed in the details). Still, it’s wise to double-check rather than rely on the model name alone—some variants can differ by connector.
What stands out in everyday use
Day to day, the biggest practical advantage of getting the right replacement charger is simply continuity: you can charge and use your laptop without hunting for a workaround or borrowing a charger that isn’t quite right.
This adapter’s spec alignment (20V / 2.25A / 45W) and the clearly stated 4.0 x 1.7mm connector are the things that should help it “plug back into life” if your original charger matches those same requirements.
There’s also a safety angle in the provided description. It claims protections against: - over current - incorrect voltage - short circuit - internal overheating
It also mentions anti-interference cable wiring with a magnetic ring. In real terms, that’s the sort of detail that can matter if you’re sensitive to electrical noise or you’ve had chargers before where the cable got temperamental.
Who it suits (and who should be cautious)
This is the sort of charger that makes sense if:
- you own a compatible Lenovo IdeaPad or Yoga listed in the information provided
- your current charger is lost, failing, or you need a second one for home/desk use
- you care about matching the 20V, 2.25A, 45W output and the 4.0 x 1.7mm round tip
It may not be the best match if:
- your laptop doesn’t use the 4.0 x 1.7mm round connector (even if the laptop model appears similar)
- you’re expecting it to work for chargers with different voltage/current expectations
- you want maximum flexibility across unrelated laptop brands—this is clearly aimed at specific Lenovo families
Is it a safe choice? A realistic take
The description makes safety claims and lists protection types, plus it references anti-interference magnetic ring wiring. That’s encouraging, but it’s still “as described”, not independent testing data.
So the sensible way to think about it is: it’s reasonable to expect those protections to help manage common charger failure risks, but the safest outcome still depends on correct compatibility—particularly the connector size and the 20V output requirement.
If you prioritise getting the right electrical fit and you’re replacing a like-for-like charger, this looks like it could do the job. If you’re unsure about your current charger specs, it’s worth checking your existing label before buying.
Final verdict
Is it worth it?
A solid choice if you need a 45W replacement charger for a compatible Lenovo IdeaPad or Yoga and your laptop uses the 4.0 x 1.7mm round tip with 20V / 2.25A output. The included safety protections and the anti-interference cable detail are sensible add-ons for a daily-use accessory.
It might not be worth your time if the connector size doesn’t match, or if your laptop isn’t clearly covered by the provided compatibility list and part numbers. In that situation, no amount of “replacement” marketing helps—getting the specs right is everything.
Quick overview: FAQ
Compatibility — does it work with my Lenovo?
The information provided lists a large range of IdeaPad/Yoga models and several part numbers. To avoid surprises, check your laptop’s current charger connector size (it should be 4.0 x 1.7mm round) and compare your model/part number with what’s listed.
What output does the charger provide?
It’s specified as DC 20V at 2.25A, rated at 45W.
Is this charger suitable for travel or a second desk charger?
It’s AC input 100–240VAC, which is commonly useful across regions. Whether it’s ideal for travel depends on whether you want a compact spare and whether the connector type matches your laptop.
Does it include anything in the box?
The package contains 1 x VUOHOEG Laptop Charger and a User’s Manual.