Garmin's New "Muscle Battery" Technology Outlook: Mastering Your Key to Exercise Recovery

Foreword: A New Breakthrough in Sports Technology

In the realms of professional sports and daily health monitoring, every technological breakthrough in smartwatches captivates sports enthusiasts. Recently, a new trademark registration by smartwatch giant Garmin has once again stirred up heated discussions in the sports tech world!

Can "muscles" also have a battery level? This new technology heralds a new era for precise monitoring of localized muscle fatigue and recovery.

Official Latest News: "Muscle Battery" Trademark Registration

According to officially released information, Garmin officially filed and registered the new trademark "Muscle Battery" in the first half of 2026 [cite: 1]. While Garmin has not yet released any technical white papers, product pages, or official feature descriptions for this function, this trademark protection move undoubtedly suggests that Garmin is actively developing its next-generation monitoring technology for "localized muscle fatigue and recovery" [cite: 1].

Industry Speculation: How Does Muscle Battery Work?

Although the official details of the function remain a mystery, according to speculation from various tech media and industry experts, this feature is highly likely to be closely related to the following technologies [cite: 1]:

• Quantification of Muscle Oxygen Saturation (SmO₂): Industry speculation suggests that "Muscle Battery" may utilize Near-Infrared Spectroscopy (NIRS) technology to estimate muscle fatigue by detecting oxygen levels in the muscles [cite: 1].
• Requires dedicated external sensors: Since optical sensors on the wrist cannot directly penetrate and measure the oxygen status of specific muscle groups (such as thigh or arm muscles), it is widely believed in the industry that future use of "Muscle Battery" may require external dedicated muscle oxygen sensors, working in conjunction with smartwatches through the Garmin Connect platform [cite: 1].

Scientific Support: Why is "Muscle Oxygen Content" Crucial?

While Garmin has not yet released its official algorithm, "Muscle Oxygen Saturation (SmO₂)" has long been supported by extensive research and clinical literature in the sports science community [cite: 1]:

• When we engage in high-intensity strength training, cycling, or running, localized muscles consume a large amount of oxygen, causing the SmO₂ indicator to decrease [cite: 1].
• When exercise stops or during rest periods between sets, blood re-oxygenates the muscles, causing the indicator to recover [cite: 1].
• By scientifically measuring SmO₂ (calculated from the ratio of oxygenated hemoglobin O₂Hb and deoxygenated hemoglobin HHb), athletes can accurately determine the fatigue level of specific muscle groups, thereby deciding the optimal rest time and training intensity, effectively preventing muscle injury caused by overtraining [cite: 1].

A Quick Look: Muscle Battery vs. Existing Metrics

To make it easier for users of all ages to understand, we have compiled a comparison of the speculated "Muscle Battery" with existing official Garmin metrics:

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