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Dear Friends, I have a query for interchange of laptop chargers & I am sure that it will be useful to many of us who has 2 or more laptops (mainly office / home) or uses their laptop at two different locations. I have used word - laptop charger, but also mentioned @ many places as AC adapter. I have following three chargers with me. Charger 1 Office Fujitsu Laptop Make - Fujitsu Input - 100-240 V, 1.2-0.6 A, 50-60 Hz Output : 19 V, 4.22 A Charger 2 Home Samsung Laptop Make - Samsung Input - 100-240 V, 1.5 A, 50-60 Hz Output : 19 V, 3.16 A Charger 3 Old HP Laptop - only charger available. Make - HP Input - 100-240 V, 1.7 A, 50-60 Hz Output : 18.5 V, 3.5 A, 65 W All charger output PIN polarity is same. i.e. + in center & - in outside. Input pin dimensions are different, but assume that we can manage connectors (male/female), which can connect any charger with any laptop, without any polarity change. Now, my questions are : 1) Is it possible to use Charger 2 (with 3.16 A) to charge office laptop (which has 4.22 A charger) ? Voltage is same for both the chargers. 2) Is it possible to use a charger 3 (with 18.5 V) to charger office / home laptop (which uses 19 V chargers). 3) Are there any adverse effect on laptop hardware (like mother board / battery) due to interchange of any of these chargers ? 4) Does, laptop OEM put any restriction in laptop, which senses change of chargers & gives message or malfunction. Agree that they write specific instructions in their manuals for using original accessories compatible with the laptop. Experts in the similar field are requested to give your comments, as with sound technical knowledge, we may be in a position to interchange chargers, if not for long use but even for emergency / temporary charging. DISCLAIMER : Anyone trying out any similar activity mentioned above after reading any advice / feedback given by other members, WILL BE DOING ON HIS / HER OWN RISK. NO MEMBER shall be responsible for any advice/feedback they have posted. EVERYONE should know that this forum is only to share knowledge / experience etc & NOT to share RISK. MODS : If required, kindly move this post to appropriate location. But, please pin it for more contribution.