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Resonetics Introduces Contego 20 mAh Rechargeable Lithium Ion Battery for Implantable Medical Devices #2

Adds smaller size to Contego product line of implantable batteries for medical devices.

Nashua, NH November 18, 2022 – Resonetics announced today the launch of the new Contego 20 mAh lithium ion battery, an implantable, lightweight, miniature D-shaped cell. The rechargeable off-the-shelf Contego 20 offers superior rate capability and cycle life. It is manufactured in an ISO 13485 certified facility located near Vancouver, British Columbia that was acquired by Resonetics from EaglePicher Technologies in April 2022.

The Contego 20 battery comes in a fully welded, hermetically sealed titanium case and includes a thermal shutdown separator. With a long cycle life and extended shelf life, it can be used across a range of medical applications including neuromodulators, cardiac monitors, and stimulators. The individual battery weighs just 1.5g and operates over a voltage range of 3.0V to 4.1V. While the Contego 20 is available off-the-shelf, additional options include custom terminations, application specific documentation for FDA submission, application specific testing, custom markings, and custom packaging.

“We’re excited to introduce the Contego 20 as part of our growing line of standard, implantable batteries for mission-critical medical devices,” commented Tom Burns, President, and CEO of Resonetics. “Since acquiring EaglePicher Medical Power earlier this year, we’ve made investments in our implantable battery technology to deliver products that will help our customers develop groundbreaking bioelectronic devices.”

“Advancements in electronic technology are enabling bioelectronic devices to be more efficient, lowering the power demands of the device, and allowing the use of smaller batteries,” said Kevin Hartke, Chief Technology Officer at Resonetics. “The team in Vancouver is committed to developing smaller, off-the-shelf batteries that will meet our customers’ need to decrease their device footprint. With the new Contego 20, we deliver more energy in a compact, lightweight cell, while never compromising safety.”

Resonetics’ medical power team has been at the forefront of implantable medical-grade power solutions for over 25 years. The electrochemistry used in the Contego lithium ion batteries was first launched in 2004 and is proven in multiple cell sizes. In addition to off-the-shelf batteries, Resonetics also designs and manufactures custom implantable batteries.

For more information about the Contego 20 mAh rechargeable, implantable lithium ion medical batteries, please visit

About Resonetics

Founded in 1987, Resonetics is a pioneer in advanced engineering, prototyping, product development, and manufacturing solutions for the life sciences industry. Resonetics is a leader in laser processing, centerless grinding, nitinol processing, thin-wall stainless steel & precious metal tubing, photochemical machining, microfluidics, sensor solutions, and medical power. With strategically located AGILE Product Development teams and Lightspeed Labs, Resonetics is committed to quality, speed, innovation, and a great customer experience. The company is ISO 13485:2016 certified with 15 facilities and more than 2,000 associates in the United States, Canada, Costa Rica, Israel, and Switzerland. Learn more at


Justin Miller


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