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Segu

Compatibility of USB Type-C laptop power adapter.

6 hours ago, Segu said:

Guys,

I have this Lenovo 20V - 2A laptop adapter, I would like to know if it's ok to use with my Razer Blade Stealth?

Razer Blade Stealth (RBS) came with 20V - 2.25A power supply.

 

No, for one simple reason: 250mA difference.

You must never ever use a power adapter that is rated less than the original for the device.

 

If the Lenovo was rated 2.5A then there wouldn't be a problem....

 

 

 

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Posted · Original PosterOP

Guys,

I have this Lenovo 20V - 2A laptop adapter, I would like to know if it's ok to use with my Razer Blade Stealth?

Razer Blade Stealth (RBS) came with 20V - 2.25A power supply.

 

If yes I would like to know how much leeway we have? Can I go higher? or much lower?

I like new USB Type-C standard but using those without frying my device is tricky.

I'm completely useless when comes to this kind of stuff.

Cheers.

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Like you said, the new type-c with PD is a bit tricky. Id said don't risk it. Most manufacturers make their chargers specifically for their devices and their devices only. That being said, try getting some aftermarket charger that support many standards. For example this:
http://www.tronsmart.com/products/tronsmart-w2dt-48w-usb-pd-wall-charger-with-quick-charge-3-0


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Posted · Best Answer
6 hours ago, Segu said:

Guys,

I have this Lenovo 20V - 2A laptop adapter, I would like to know if it's ok to use with my Razer Blade Stealth?

Razer Blade Stealth (RBS) came with 20V - 2.25A power supply.

 

No, for one simple reason: 250mA difference.

You must never ever use a power adapter that is rated less than the original for the device.

 

If the Lenovo was rated 2.5A then there wouldn't be a problem....

 

 

 


"Hell is full of good meanings, but Heaven is full of good works"

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Posted · Original PosterOP
11 hours ago, Stefan Payne said:

 

No, for one simple reason: 250mA difference.

You must never ever use a power adapter that is rated less than the original for the device.

 

If the Lenovo was rated 2.5A then there wouldn't be a problem....

Then what would be the highest I can go?

Would it be ok to use 87W or Higher rated charger for bigger laptops?

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48 minutes ago, Segu said:

Then what would be the highest I can go?

Would it be ok to use 87W or Higher rated charger for bigger laptops?

Yes, the spec of the Charger has to be equal or higher than the device to charge.

 

A 87W one seems reasonable...


"Hell is full of good meanings, but Heaven is full of good works"

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Posted · Original PosterOP
6 hours ago, Stefan Payne said:

Yes, the spec of the Charger has to be equal or higher than the device to charge.

 

A 87W one seems reasonable...

Thanks a bunch. I will do that.

For everyone else I will try that charger and post it here for future reference.

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