How to Extend Your Smartwatch Battery Life: 12 Proven Tips

One of the most common frustrations with smartwatches is battery life. Premium devices from Apple and Samsung often last less than two days between charges, requiring you to build daily charging into your routine like a phone. COLMI smartwatches perform significantly better — most models last 7 to 12 days, and some COLMI smart rings reach 30 days — but even these impressive figures can be reduced if you're using battery-hungry features without realising it. This guide gives you 12 proven strategies to maximise battery life on any COLMI device, with specific settings recommendations for getting the most out of your particular model.

Why Smartwatch Battery Life Varies So Much

Manufacturers quote battery life under specific test conditions — typically with many power-hungry features disabled or set to minimal use. Real-world battery life depends on which features you have active, how often you interact with the display, whether GPS is in use, and even environmental temperature. Understanding the biggest battery consumers helps you make intelligent decisions about which features to enable and which to leave off.

The primary battery consumers on a COLMI smartwatch are, roughly in order of impact:

GPS (if built-in and active) — by far the biggest single consumer
Always-On Display (AOD) — keeping the screen permanently lit
Display brightness — higher brightness, faster drain
Continuous health monitoring frequency — more frequent HR sampling costs more
Bluetooth connection activity — frequent syncing costs more than periodic
Notifications — each notification briefly activates the display and vibration motor

With these in mind, here are 12 actionable tips to extend your COLMI's battery life.

Tip 1: Turn Off Always-On Display

The Always-On Display (AOD) feature keeps the watch face permanently visible, even when you're not actively looking at it. It's a convenient feature — glancing at the time without raising your wrist is genuinely useful — but it's one of the most significant battery consumers on AMOLED smartwatches.

Even on AMOLED panels (which are more efficient for AOD than IPS LCD because only illuminated pixels consume power), keeping a portion of the screen on continuously for 16 hours a day significantly reduces battery life. Most users report a 30 to 50% reduction in battery life when AOD is enabled compared to the same watch with raise-to-wake only.

Action: Disable AOD in your watch's display settings. Use raise-to-wake (wrist flick) instead, which activates the display only when you look at it. If you miss the always-on functionality, consider it for daytime use only and set it to disable automatically at night when you're unlikely to be checking the time.

Tip 2: Reduce Display Brightness

Display brightness has a direct linear relationship with battery consumption — the brighter the screen, the more power it draws. Most smartwatches, including COLMI models, offer automatic brightness adjustment that scales brightness to ambient light levels. This is more battery-efficient than setting a fixed high brightness level, because it uses minimum necessary brightness in dim indoor environments.

Action: Enable auto-brightness in your display settings. If you prefer manual brightness, set it to the minimum comfortable level for your most common environments. Outdoors on a sunny day may require high brightness for readability; indoors and at night, much lower settings are comfortable and significantly more efficient.

Tip 3: Reduce Display Wake Duration

Every time your display activates — whether from a wrist raise, a notification, or a button press — it stays on for a set duration before automatically turning off. A longer screen timeout means more cumulative display-on time throughout the day. Most COLMI watches allow you to configure the display wake duration.

Action: Set your display wake duration to the shortest comfortable time — typically 5 to 10 seconds is sufficient for reading notifications and checking health data. A 30-second default wake duration wastes significant battery compared to a 5-second setting if you're checking your watch dozens of times per day.

Tip 4: Use GPS Selectively, Not Continuously

If your COLMI watch has built-in GPS (P82, V75, V76), GPS is by far the largest single battery consumer when active. Continuous GPS tracking can drain a full charge in 12 to 15 hours on most devices. For most users, GPS should only be active during outdoor workouts rather than enabled continuously.

Action: Only activate GPS when you're starting an outdoor GPS-tracked workout (running, cycling, hiking). Between workouts, ensure GPS is not running in the background. Check your watch's settings to confirm that GPS doesn't remain active after a workout ends. Some watches have an option to use phone GPS (connected GPS) for route tracking, which saves the watch's battery while still providing accurate route data — use this mode when you have your phone with you.

Tip 5: Adjust Heart Rate Monitoring Frequency

Continuous heart rate monitoring is one of the core features of a smartwatch, but the frequency at which the sensor takes readings affects battery life. Most COLMI watches offer options ranging from real-time continuous monitoring to periodic measurements every 1, 5, or 10 minutes.

For everyday health trend monitoring, a reading every 5 minutes provides excellent data quality with meaningful battery savings compared to real-time continuous monitoring. For workout tracking, continuous monitoring during the workout is appropriate and worth the temporary higher consumption.

Action: In the Da Fit app, adjust your heart rate monitoring frequency to every 5 minutes for everyday use. Switch to continuous mode before starting a workout session, or let the sports mode handle this automatically. Avoid setting continuous monitoring as the default 24/7 mode unless your health monitoring needs specifically require it.

Tip 6: Reduce Notification Vibrations

Every notification your watch receives involves at least two battery consumers: activating the display and triggering the vibration motor. If you receive 100+ notifications per day across WhatsApp, email, social media, and other apps, the cumulative impact is non-trivial. Each notification also contributes to wear cycles on the display.

Action: In the Da Fit app's notification settings, selectively enable only the notification sources that genuinely benefit from wrist delivery. For most users, this means calls, SMS, and perhaps one messaging app. Turning off social media, promotional, and low-priority app notifications reduces battery drain and also significantly improves the wearability experience — constant buzzing is more annoying than useful.

Tip 7: Disable Features You Don't Use

Most COLMI watches have a range of features running in the background that consume battery even when you're not actively using them. Common examples include:

Stress monitoring: Continuous HRV-based stress monitoring takes regular measurements throughout the day. If you don't regularly check your stress score, disabling continuous stress monitoring (checking only on demand) saves battery.
SpO2 automatic monitoring: Some COLMI models can be set to automatically measure SpO2 at regular intervals. On-demand SpO2 (measuring when you want to check) is more battery-efficient than automatic periodic measurement if you don't rely on SpO2 trend data.
Blood pressure monitoring: If your model has this feature and you don't regularly use it, disable automatic measurement.

Action: Review your watch's active monitoring settings and disable automated features you don't actively use and review. On-demand measurement for SpO2 and stress is sufficient for most users and noticeably extends battery life.

Tip 8: Avoid Extreme Temperatures

Lithium-ion batteries — the type used in all COLMI smartwatches and rings — perform less efficiently at temperature extremes. Cold temperatures in particular reduce battery performance significantly: at 0°C, a battery may deliver only 60 to 70% of its rated capacity at room temperature. This is why smartwatch users in cold climates often notice shorter battery life in winter.

Action: In very cold conditions, wearing a long sleeve over the watch keeps it warmer and preserves battery performance. Avoid leaving your watch in very hot environments (hot cars in summer) as this can permanently degrade battery capacity over time. Charge your watch at room temperature for the most efficient charging cycle.

Tip 9: Update Firmware Regularly

COLMI releases firmware updates for its watches that often include power management improvements. Manufacturers progressively optimise their devices' power consumption through software as they gather real-world usage data and identify inefficiencies. Running outdated firmware can mean missing battery life improvements that have since been released.

Action: Check for firmware updates in the Da Fit app's device settings periodically — monthly is a reasonable cadence. When updates are available, install them at a convenient time (the update process typically requires the watch to be nearby and the app to be open for a few minutes). Keep the Da Fit app itself updated for the latest companion app optimisations.

Tip 10: Use Dark Watch Faces on AMOLED Screens

If your COLMI watch has an AMOLED display (V72, V73, P82, P86, i28 Ultra, M42, and others), choosing a dark watch face can meaningfully extend battery life. AMOLED pixels that display black colour are completely off and consume zero power. A watch face with a predominantly black background has significantly lower average display power consumption than one with a white or brightly coloured background.

Action: In the Da Fit app's watch face library, choose a dark or black-background watch face for everyday use. Dark digital faces with white or coloured text are the most battery-efficient option and often look the most premium on AMOLED screens. Reserve bright or colourful watch faces for occasions where aesthetics are the priority over battery life.

Tip 11: Manage Bluetooth Sync Frequency

Your COLMI watch maintains a Bluetooth connection to your phone to relay notifications, sync health data, and receive configuration changes. This connection is generally efficient, but some users configure their watches to sync data very frequently, which can add up over a full day of use.

Action: Ensure your Da Fit app's sync settings are configured for periodic rather than continuous data sync where this option is available. Notification relay requires continuous Bluetooth connection, but health data synchronisation can occur periodically. If you're on a long hike or outdoor activity where you want maximum GPS battery life, putting your phone in your bag rather than checking it constantly reduces the Bluetooth activity that occurs when you interact with your phone.

Tip 12: Charge Efficiently to Preserve Long-Term Battery Health

Long-term battery capacity is preserved by good charging habits. Lithium-ion batteries degrade fastest when repeatedly charged from very low levels to 100% and kept at 100% for extended periods. While the capacity per charge matters for day-to-day battery life, the total capacity of the battery after 2 years of use is affected by charging behaviour.

Action:

Charge before the battery reaches below 20% where possible, rather than running it completely flat
Don't leave your watch on the charger overnight every night if it reaches 100% quickly — unplug once fully charged where practical
Store your watch at 40 to 60% charge if you're not going to use it for an extended period
Use the included magnetic charging cable rather than third-party alternatives, as these are optimised for the watch's charging circuit

Battery Life by Model: What to Realistically Expect

With the above optimisations applied, here's what typical COLMI users report for battery life in real-world use:

COLMI C8 Max: 7–10 days (optimised) vs 6–7 days (default settings)
COLMI P71: 8–12 days (optimised) vs 7–10 days (default)
COLMI V72/V73: 9–14 days (optimised, dark face) vs 7–10 days (default)
COLMI P80/P81: 12–16 days (optimised) vs 10–12 days (default)
COLMI P82: 8–12 days non-GPS (optimised) vs 7–10 days (default); 13–15 hours continuous GPS
COLMI i28 Ultra: 9–13 days (optimised) vs 7–10 days (default)
COLMI M42: 12–14 days (optimised) vs 10 days (default)
COLMI R07 Smart Ring: Up to 30 days with power-efficient settings

The difference between default settings and optimised settings is typically 20 to 40% additional battery life — meaningful in real terms, particularly for models already at the longer end of the battery life spectrum.

Final Thoughts

Getting the most from your COLMI smartwatch battery is primarily about understanding which features consume power and making deliberate choices about which to prioritise. For most users, disabling AOD, reducing display brightness, enabling dark watch faces on AMOLED models, and adjusting heart rate monitoring frequency will together extend battery life by 2 to 4 days compared to default settings — without meaningfully reducing the functionality you actually rely on day to day.

The goal isn't to disable everything and turn your watch into a basic step counter. It's to identify the settings that provide genuine daily value to you and prioritise those, while setting aside features you're not actively using. Applied thoughtfully, these 12 tips will keep your COLMI watch on your wrist and off the charger as much as possible.