Timeline for Can a 20V, 4.5A travel adapter replace a 19V, 3.42A charger on ThinkPad T440 Lenovo?
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
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| Feb 21, 2016 at 4:38 | history | edited | fixer1234 |
removed unnecessary manufacturer meta tags
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| Oct 25, 2014 at 19:16 | answer | added | Tonny | timeline score: 2 | |
| Oct 25, 2014 at 18:59 | answer | added | user256743 | timeline score: 1 | |
| Oct 25, 2014 at 17:15 | comment | added | andremartins | @fixer1234 thanks again. I have more confidence to use it with my T440. Awesome explanation. | |
| Oct 25, 2014 at 17:03 | comment | added | fixer1234 | The current rating tells you about the capacity to provide power. A 4.5A charger can support a higher power requirement than a 3.42A charger. The chargers are manufactured to be generic--same charger provided for multiple machines. They generally are not used at full capacity. The 4.5A charger would have more unused capacity. If the actual current draw is a tiny fraction of the rated capacity, the voltage could be off if the charger is not well designed, but if it is a manufacturer-supplied charger, my guess would be that your usage would be within the design specs for regulating voltage. | |
| S Oct 25, 2014 at 16:52 | history | suggested | Prasanna | CC BY-SA 3.0 |
updated the title and edited the body of the question
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| Oct 25, 2014 at 16:52 | comment | added | andremartins | Thanks for the feedback @fixer1234. I contact Lenovo and really there's no one who barely knows more than me to say with confidence. About the 19V/20V I agree with you, should be fine, but my really question is about the new AC with the $.5A and the old one with 3.42A. About that, what do you think? Thanks again. | |
| Oct 25, 2014 at 16:47 | review | Suggested edits | |||
| S Oct 25, 2014 at 16:52 | |||||
| Oct 25, 2014 at 14:29 | comment | added | fixer1234 | Only Lenovo can definitively confirm that it is compatible and not a shipping mistake, and a quick call or email to their tech support or customer support will do that. However in general, a 1 volt difference for something designed for 19 volts should be fine. It will create an extra few watts of heat that must be dissipated, so make sure the ventilation area is clear. | |
| Oct 25, 2014 at 12:43 | review | First posts | |||
| Oct 25, 2014 at 12:44 | |||||
| Oct 25, 2014 at 12:43 | history | asked | andremartins | CC BY-SA 3.0 |