Product Description

Spare battery for designated Sennheiser wireless headphones. Manufactured to the Highest Quality Available. With True Enhanced Performance. Latest Technical Development

Product Details

• Color: Black
• Brand: Sennheiser
• Model: BA151
• Dimensions: .0" h x .0" w x .0" l, .4 pounds

Features

• Satisfaction Ensured.
• Manufactured to the Highest Quality Available.
• With True Enhanced Performance.
• Latest Technical Development.

Customer Reviews

About 2 hours tops
I love my Sennheiser wireless headphones -- except for the battery. This battery rarely lasts more than 2 hours. That's why I have a charging unit that charges two batteries. Also to keep in mind -- these batteries wear out fast. There's only so often you can recharge these things before they die completely. If I'd known how many of these $20 batteries I'd be going though, I would probably have picked a different brand of wireless headset.

This is undoubtedly the battery for you
It's pretty hard to write a review of a battery; it either works or it doesn't. This one does. It also fits the unit for which it was intended. So that's two points right there.

If you have a set of Senns, and the batteries that come with it aren't enough to keep you going (I actually find that they last closer to five hours than the four advertised), then this is the product for you. You might even want a recharging unit too, since they take at least fourteen hours to recharge, and the headset stand only holds two batteries. The spare battery can be crucial if you're like me, and often use the headset all day at work! Go for it!

You can hack this.
Yeah, this proprietary case is ridiculously expensive. If you are a little bit handy, you can take the case apart using an exacto blade. Pry along the edges, it is plastic welded, but comes apart pretty easy. There are two V80H batteries inside made by Varta. These are 1.2V Ni-MH cells for a total voltage of 2.4V. You can buy the batteries inside the case here on amazon for [...] (1.2 Volts .08 Ahmps.), or from batteryspecialists.com for [...] when you buy 6. You will have to desolder the tabs from the old batteries and solder the new ones in there. Have fun.