Logitech 533-000074 Li-ion Rechargeable Battery Sanyo 553436 720mAh for Mouse MX1000 Mice 981-000277 UE9000 Headphones G930 533-000074 F540 981-000257

This is the second most disappointing battery I have ever purchased. I have used this batter for 3 months and 15 days and it hardly holds a charge anymore. I leave it on a charger overnight and it lasts maybe 35 minutes and is constantly telling me the battery is low. I noticed a drop in charge life even after a couple of weeks of using this. It has turned my wireless headset into a wired headset. I plan on complaining to the company directly on the next business day. Next time I am going to buy an OEM battery for more money, at least it will have a warranty to last more than 3 months.

Will have to buy another one but it wont be another one of these poo poo batteries

It just didn't work. Waste of money. Found a cheaper and better battery with other provider.

The original battery in the wireless headset must have had a cell fail, because the original was bulging. The headset continued to function for the most part, but would often behave very strangely. After replacement, everything behaves as expected, so the headset was probably undervolted

Worked on my 930 headphones. Taking the headphones apart was not an easy job. I also replaced the ear cups at the same time and I couldn't be happier. Like new now.