L12M4P21 Laptop Replacement Battery for Lenovo Yoga 2 Pro 13 Series L13S4P21 121500156 21CP5/57/128-2 7.4V 54WH/7400MAH 8-Cell

Bought this for a yoga 2 pro where battery was only lasting 1.5 hours. I had to return another battery a few dollars cheaper that had the connector installed backwards and didn’t work. This battery came in foam padding and an static shielding bag. The other was just in a box. Much better packaging, and quality of the connector. I’m getting 6-7 hours estimated with the battery icon. The only issue I had was getting the battery to be recognized by windows 8.1. The steps from the manufacturer didn’t work. YouTube search offered another option to update bios and that worked.

This battery was purchased to replace the dead battery on my Lenovo Yoga 2 Pro. It was easy to install, especially due to the included tools to facilitate taking the base cover off of laptop, separating base from upper part of laptop, and unscrewing two types of screws. The new battery was charged to 50%, just like the instructions said it would be. I have not had it long enough to comment on battery life before recharge is needed. According to the instructions, it will take a few cycles of discharge and recharge to obtain maximum efficiency.

I purchased and received this battery for my Lenovo Yoga laptop, only to discover that the tabs to secure the battery to the laptop were bent. I thought that was a one-off problem, returned the battery, and requested an update, only to discover the same problem. I then realized that the manufacturer wanted to reduce packaging costs with the side benefit of having customers say thank you for screwing them, so I took my fingers and a screwdriver and bent the tabs back. I should have been a bit less lazy and gone for a needle nose plier. The only other issue is that it is not obvious which way the electrical leads go into the unit. I chose straight with the back lead to the left. The laptop turned on, so mission accomplished. I do like that they included tools. It would be nice if the screw tabs were straight. I would rather pay an extra $0.50 rather than deal with the tab grief.

What I thought was great "customer experience", was the fact that the Laqueena replacement battery came with all these "micro" tools. Without them I would have had to go out and buy these tiny screwdrivers, not all of them easiliy available. KUDOS FOR THAT... The rest was easy, and I was very glad that the new battery was recognized by my Yoga 2 PRO in an instant!!! Working great...thanks LAQUEENA!

The battery came complete with tools which was a great plus. As with all batteries, it came low charged but I charged it up and it reboot my laptop fine.

I have been using this battery for a while and it holds a charge in stand by for about 6hrs. Very happy with is.

It seemed to be working great and then all thr sudden it doesn’t Work anymore and the laptop must remain plugged in at all time

Don't know why, but this battery appears to have a shorter time before recharging is required. I was delighted to discover installation tools were included. Made the work easier. You can see how on a You Tube video.