Can I use a 19v charger on a 18.5 V laptop?

Yes you can use the 90W adapter without any problems on the computer since the difference in Voltage is minimal and in the accepted range.

Can I use 19.5 V 18.5 V laptop?

Yes it is ok to use 18.5v charger as this voltage is lesser than the rated voltage of your charger(19 V).

Can I use a 18v charger for a 19V laptop?

Yes it is ok to use 18.5v charger as this voltage is lesser than the rated voltage of your charger(19 V). Amperage (3.5A v/s 2.37A) is insignificant as the current is dependent on the load (i.e Laptop) and not on the source.

What is the output voltage of the AC adapter of Asus Laptop?

The AC adapter of ASUS laptop shows the input/output voltage/current (as below red square mark in the picture) and the safety certifications on the rear side. INPUT: Applicable voltage is 100~240V as AC (Alternating Current), 50~60Hz as frequency, and 2A as current.

What type of battery does Asus Asus laptops use?

ASUS battery of laptops utilize Li-ion battery which has no battery memory effect, and the system is able to prevent over-charge/excessive discharge/charge temperature control. One thing to be emphasized is that Li-ion battery will “self-discharge” and battery level will slightly go down even though it is not used.

What voltage do you charge your laptop battery at?

A lithium ion/polymer cell is nominally 3.7V or so but the voltage needed to fully charge it is more like 4.2V and the voltage when fully dishcharged may be more like 3V. Laptop batteries generally have 3-4 cells in series. So 19V gives a reasonable ammount of headroom for the charging circuit.

What is the voltage and current of a USB wall adapter?

Standard USB devices have a 5 V dc voltage and a current up to.5 A or 500 mA for charging only. This is what allows them to play nice with the USB ports on your computer. Most USB wall adapters will be 5 V adapters and have a current rating well over.5 A. The iPhone USB wall adapter I’m holding in my hand right now is 5 V / 1 A.