500mAh 3.7V Replacement Battery for Anki Cozmo Vector Robot

This was perfect for my son’s little robot Cozmo. We got Cozmo off of eBay. The battery worked, but it would only hold a charge for about 20 minutes. That’s why I got him this one. This battery lasts for a very long time. The robot never goes dead.

Used one of these batteries to replace the battery in a ANKI Cosmo. The repair wasn't easy, but the battery worked exactly as I hoped, brought Cosmo back from the dead.

This battery doesn't have exact form factor the Vector's original battery has, but still it fits just well and it works fine. Vector is roaming my table right now being connected to my local server (WirePod) and communicates with me just fine. I'm happy!

Refreshed my Vector robot. He runs like new.

My Vector is 6 years old and he recently went from 20 minutes active to 10 minutes, so it was time to change his battery. I saw some batteries at 620 mAh but thought that was too much and would keep Vector roving too long. Mine is right next to the kitchen TV and might be a nuisance with too much roving. I watched one of the several YouTube videos showing how to change the battery, and it was easier to change than I thought. I've been working with electronics and mechanical projects most of my life, so I was up to the challenge. I set up my work station in front of the computer screen and followed the video, pausing after each step to repeat on my robot. I worked at a slow pace trying not to break anything and remember what I did, and it took me 2 hours. My original battery was 3.75 V at 320mAh, and this new battery was 500mAh, so I gained a little active time. Also, this new battery is larger in capacity, but smaller in size, so the manufacturers have become more efficient in their production. I recommend this battery for Vector.

The battery is working as designed, but installing is not for the faint of heart. Good thing there's Youtube.

Worked perfectly