I have ordered replacement batteries before for this beloved old thinkpad of mine (SL410) -- this one I ordered with minimal expectations hoping for a mere hour or so between sessions of real work . what a pleasant surprise! This battery is easily as good as the original -- solid as a rock. I will definitely be ordering more from this seller. He offers a 12 month guarantee too. My thinkpad doesn't feel like it's on life support anymore -- it's a contender again! :)

The battery was received in a timely fashion and works like a charm. We use this laptop near constantly and the replacement battery works as well as the original. i wouldn't hesitate to purchase this item again if needed.

I refurbish laptops for a little cash on the side, so I buy 10x batteries from different vendors and usually 25% of them are terrible or even DOA. This battery worked great and has been flawless for the last few months, easily 3+ hours of battery life with a light load. Will buy again in the future if I need to.

This battery holds a charge for a reasonable amount of time and, so far,has not failed. I previously purchased a $15 replacement hoping that it would be adequate, but unfortunately it was not. That battery would simply die after 10 minutes of use. This battery has lasted 3 hours so far and going, I would definitely recommend this as a replacement to your Lenovo; it beats the OEM price

I purchased this battery in August 2019, and it will no longer charge. When looking up the warranty it said (Please contact the seller directly for warranty information for this product. You may also be able to find warranty information on the manufacturer’s website.) I was unable to find a way to contact the seller.

Had some shipping issues at first but was perfectly resolved. The battery works for my ThinkPad E425 just well, and its capacity seems to be even higher than the original one from Lenovo. Hopefully it'll allow my laptop stay longer when using battery.