When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission.
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network
Lenovo ThinkPad T420SI Power Adapter
Because Lenovo uses one power charger that powers multiple other machines, be certain to thoroughly note the part number that is needed for this model. The Lenovo ThinkPad T420SI power adapter provides two functions, charging the battery while simultaneously providing power for the laptop. A universal power adapter can be used if yours is unavailable or backordered. When choosing a new charger, the actual Lenovo brand is usually going to be the safest choice. If you decide to buy an non-Lenovo adapter, make note of the output of amps and voltage.
Signs of a defective power adapter
- Your Lenovo battery refuses to charge completely
- Most Lenovo adapters can get quite warm when they are plugged in for a period of time
- The laptop does not function using just the AC power adapter
This site contains affiliate links for which I may be compensated
A Lenovo ThinkPad T420SI power adapter will be better for your laptop in brand new condition for obvious reasons, including possible wear on any old power adapter that may occur. The Lenovo ThinkPad T420SI will be better off for thinking before buying. It is in your best interest to double-check the OEM part number so that you correctly order the right power adapter. Try to always order parts from a site you know when buying parts online.
Feel free to download your manual for help.
This site contains affiliate links for which I may be compensated
