Premium Lithium Polymer Rechargeable Battery Compatible with Sennheiser BA300 Set 900, Set 840, Ri 900 (140mAh, 3.7V)

• Replacement Battery for Sennheiser Set 840-TV, Set 840-S, Set 830-TV, RI 830, Set 830 S, RI 830 S, IS 410, RI 410, RS 4200, RR 4200
• Battery Capacity: 140mAh, Voltage: 3.7V, Lipo Rechargeable Battery
• Fast Charging, Compact Design, Long Lasting Life
• Premium Quality, High Performance
• RISK FREE PURCHASE: Satisfying our customers with high quality products is our top priority. That is why this replacement battery is backed by our 100% money back guarantee policy! In the unlikely event of ever having any issues with it. Get yours with confidence today.

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Entering AvimaBasics replacement headphone batteries!

So, before you go out there searching for a brand new headset, make sure you have a look at our wonderful replacement battery collection. Save your precious time and hard earned money today!

Whether you love listening to music on the go, enjoy your favorite radio show while jogging, your headphones should never run out of battery! Introducing the ultimate replacement battery kit.

Achieve a full charge in less than 2 hours and enjoy your favorite tunes! Pure perfection, right?

Made of high quality parts and the latest NI-MH technology, this rechargeable headset battery is guaranteed to meet and even exceed the original equipment manufacturer expectations at an even lower price. Get maximum bang for your buck just like that.

insanely expensive high brand batteries.

replacement batteries not working properly.

trouble recharging your headset battery.

batteries not fitting well into the charger.