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MED-EL
Published Mar 02, 2026
With up to 23 hours of hearing from one charge, the new rechargeable batteries for SONNET 3 are smaller and more powerful than ever before. Read on to find out how you can give your patients the hearing they deserve, without any compromises.
Direct integrated streaming. Superior sound quality. Quick program changes. And now the longest-lasting rechargeable battery of our BTE audio processors. With the new rechargeable battery options for SONNET 3, your patients don’t have to compromise. Here’s everything you need to know.
Offering battery power from breakfast to bedtime and beyond, the rechargeable battery Standard Pro is designed to give an extended day of hearing. That means your patients can charge it overnight and not worry about their battery running out while they go about their day.
If your patients prefer a lightweight, discreet option, then we also offer the miniscule rechargeable battery Micro Pro. Just 41.6 mm long, it still offers 12 hours of power—ideal for a day at school or in the office.
Do your patients use SONNET 2? No problem! Both the Standard Pro and Micro Pro work with SONNET 2, so that your patients can enjoy longer battery life without having to upgrade.
SONNET 2 with the Standard Pro has a battery runtime of up to 20 hours from one charge. With the Micro Pro, your patients can enjoy up to 11 hours from one charge.
The new rechargeables glide smoothly into their charging unit, with haptic feedback that lets you know they’re in the correct place. They can be charged with or without the processor attached, and there’s a spot to hold the coil in place while they replenish. They’ll be fully charged in just three hours.
The charging unit has a USB-C port which can be used with any CE-marked USB-C charging cable. Perfect for travelling.
Assembling the new batteries is also easier than before. There’s no adapter, so your patients just need to click the batteries into place and then slide the cover on. This hands-on video show your patients exactly how to assemble and charge the batteries.
One of the things patients love about SONNET series audio processors is its modular design. And the battery options are no exception. They can go fully rechargeable, choose disposable batteries or even switch between the two.
With the new rechargeable batteries, your patients don’t have to compromise. They can enjoy the more natural sound quality from their SYNCHRONY 2 cochlear implant and the convenience of all-day hearing with SONNET 3.
Found out how SONNET 3 gives your patients the hearing they deserve, in our smallest package yet.
Discover MoreWhich audio processors are the Micro Pro and Standard Pro available for?
The new rechargeable batteries are available for SONNET 2 and SONNET 3, as well as for SONNET 2 EAS and SONNET 3 EAS.
How long is the total battery lifetime?
Each battery is designed for more than 1100 charging cycles at 80 percent capacity, offering an approximate lifetime of three years. This can vary depending on individual usage.
Can the charging unit be plugged into any USB adapter?
The charging unit has a USB-C port. By using a USB-C cable, it can be used with any CE-marked USB-C adapter or USB-C port on a computer.
Can more than one battery be charged at once?
Yes, up to two batteries can be charged at the same time, and full charging only takes around 3 hours. The amber indicator light goes off when the battery is fully charged.
Are these batteries suitable for small children?
Yes, both the battery pack covers for both the Standard Pro and Micro Pro have a built-in safety lock, making them tamperproof. The lightweight and compact nature of the Micro Pro battery makes it especially suited to little ears.
Can SONNET rechargeable batteries be used with WaterWear?
The Standard Pro rechargeable battery can be used with WaterWear for SONNET 3. SONNET 2 users can also use the Standard Pro with their usual WaterWear cover.
References
MED-EL
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The content on this website is for general informational purposes only and should not be taken as medical advice. Please contact your doctor or hearing specialist to learn what type of hearing solution is suitable for your specific needs. Not all products, features, or indications shown are approved in all countries.
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The content on this website is for general informational purposes only and should not be taken as medical advice. Please contact your doctor or hearing specialist to learn what type of hearing solution is suitable for your specific needs. Not all products, features, or indications shown are approved in all countries.
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