This is a brand new Lenovo IdeaPad Y400 series Battery.
NOTE: If your laptop is the Lenovo 3000 series laptop, this is not the correct battery. Lenovo used the model numbers Y400 and Y500 in the earlier 3000 series laptops as well. This is confusing as the model number Y400 or Y500 can show up with different batteries. You can always check the battery itself to compare the shape of your battery to this battery.
This battery contains the very best Li-ion cells on the market from Samsung. An important specification to look for with rechargeable batteries is the mAh (mili amp hour) rating or Whr (Watt Hour). This battery is rated at 5200 mAh or 58 Whr. This is the highest rating available for a 6 cell battery pack. The higher the mAh rating, the longer your battery will run before it needs to be recharged again.
Laptop Battery Express is a US based business with knowledgeable support staff to assist you before and after the sale. Yes, we have a phone number and real people answer your call! Free technical support is available if you need additional help in diagnosing power problems with your battery, ac power adapter or battery meter software.
All our products carry a full 2 Year warranty and every battery is charged and tested before it ships.
We provide a 30 day money back guarantee if you are not completely satisfied. We are so confident in the quality of our batteries, we will pay for any and all shipping expenses if our product fails to perform in the first 30 days you have our battery, even if it is not our fault.