Lenovo ThinkPad Battery 44++ (9 Cell) 0A36307 for ThinkPad X220

Pros: The battery has about 7-8hour battery life depending on what apps you're using. Apps video/communication apps such as Skype & Google Hangouts drain the battery much faster therefore yeilding a 2-3.5 hour life. I usually use the X220 Screen at 1/3 Dimmed & that usually gets me 8 hours easy. The genuine battery is definitely worth the $$$ I bought 2 OEM batteries previously but they both failed after 6-9 months.

Cons: None really

Overall Review: The battery is great and works well when the Screen is dimmed appropriately. Again beware that CPU intensive apps such as Skype will drain this and any battery FAST

Pros: Genuine part that worked perfectly Nearly doubled my battery life compared to the worn down 6 cell battery I originally had Costs much less than ordering directly from Lenovo

Cons: None so far

Overall Review: This battery works very well with my X230. As mentioned above, I nearly doubled my battery life with this replacement. I last about 6-7 hours with basic browsing and office work.

Pros: * TRUE Lenovo factor original equipment, not some copy or off brand * BRAND NEW, not recycled * Perfect fit in my Lenovo X220 model 4286CTO * Long battery run-time with my Intel Core i7-2620M running at 2.70 GHz

Cons: Not free

Overall Review: EXACTLY what I was hoping for! I'm very happy with this battery. :‑) :‑) I used this battery for about 2 months before writing this review, to make sure there were no problems. Be sure to prevent the battery level from dropping below 10%, or battery longevity will suffer. For more lithium ion battery care information, I suggest watching the video titled "Rechargeable Battery Care as Fast As Possible" on YouTube.

Pros: I chose this Lenovo ThinkPad Battery because it's OEM and has an excellent warranty. It's less expensive than buying directly from Lenovo, but it the same item. I was hesitant to purchase generic brands because you never know how long they last or if they are new or not. This item is new and so far, holding the charge. Plus, it's back by Newegg, which is a reputable company. Shipping was fast too.

Cons: None so far.

Pros: This is a genuine Lenovo battery. Most of the ones I've seen prior to this are clearly fake/knock-off units that are not fully functional (ex: they don't correctly report their level of charge). Lenovo wants about $150 for this item, Newegg Sold me mine for less than $90. great price!

Cons: High capacity battery extends slightly past back of laptop.