3.34A Adapter For Dell Inspiron 15(3520 3521) 15 (7537) 1545 17R (N7110 SE7720)

Warranty

1-Year Warranty
All our high quality replacement adapters for Dell 3.34A come with a 1-year warranty. Warranty is applicable if the buyer has installed the adapter properly in the device and has treated the adapter correctly.
30-Day Money Back Guarantee
Our goal is to turn customer satisfaction into ‘Complete Customer Satisfaction’. That's why we offer you a 30-day money back guarantee, on top of our warranty and RMA procedure for defects!
Please note: in order to qualify to get your money back, you must first contact us and await instructions before sending back your product.
Returns
If you have a problem with one battery which bought from us, please contact us first. We will process your request and try to find a solution for your problem. If the problem cannot be fixed by our technical support engineer, we will generate an RMA number (Return Material Authorization) for you. If inspection concludes that the returned battery is defective, a new battery will be shipped out without extra charge.

Tips for how to choose the right charger/adapter for your laptop:

Please make sure the DC Output& Connector Size are matching your original Adapter before you buy.
Output Voltage and polarity must match with your old adapter.
Output Current is not as critical as output voltage, you could select either same or higher output current adapter.
Press Ctrl+F and type your model to see whether it's in the list. If the previous three notes are the same as your adapter, you can be sure our adapter is compatible, even if your model is not listed. You can check with the Output Voltage and Output Current on the label of your original charger or the bottom/back of your laptop. As to the polarity (connector size) you can measure it or compare with ours.