Longest Battery for Your Mastiff: Fi Series 3 Review
We researched GPS trackers for Mastiffs and found the Fi Series 3 excels with a large collar, long battery life, and durable build. Read our review for the best fit.
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Maximum battery life among our picks (Fi Series 3)
38 inches
Largest collar fit (Garmin TT 15X)
IP68
Highest waterproof rating (Fi Series 3)
No subscription
Option available (Garmin TT 15X)
⚡ Key takeaways
Top Pick: Fi New Series 3+ Smart Dog Tracker Collar [12 Month Membership. The Fi Series 3 offers excellent battery life (up to 3 months) and a durable, waterproof d.
Best Upgrade: Whistle Health Smart Device. The Whistle Go Explore provides real-time GPS tracking with no distance limits, ideal for.
Best Value: Tractive Smart Dog GPS Tracker with 6 Month Subscription. Tractive offers unlimited range and live tracking with a customizable safe zone, perfect f.
Best for Beginners: Garmin 010-01486-00 TT 15 Mini Dog Device. The Garmin TT 15X is a bundle with a handheld device, eliminating the need for a subscript.
Also Great: SpotOn GPS Dog Collar Nova Edition. Spot On combines GPS tracking with a virtual fence system, ideal for Mastiffs that need bo.
Choosing the right GPS tracker for your Mastiff is crucial for their safety and your peace of mind. Mastiffs are powerful, independent dogs with a strong prey drive and a tendency to explore, making them prone to wandering if not properly contained. A reliable GPS tracker ensures you can quickly locate your gentle giant if they slip out of the yard or get lost during walks.
Our editorial team has researched the best dog GPS trackers specifically for Mastiff owners. We focused on factors like durability to withstand a large dog’s activity, battery life for long walks, and accurate GPS tracking for rural or wooded areas where Mastiffs might roam. Below are our top picks to help you keep your Mastiff safe.
Why this matters
We found that Mastiff owners prioritize battery life and collar size over advanced health features. The Fi Series 3 offers the best balance of long battery, durable build, and large fit for most Mastiffs.
The Rankings
Top 5 Picks
#1
Top Pick
Fi New Series 3+ Smart Dog Tracker Collar [12 Month Membership
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The Fi Series 3 offers excellent battery life (up to 3 months) and a durable, waterproof design that can withstand a Mastiff's active lifestyle. Its large collar size accommodates thick necks, and the LTE-M tracking provides reliable location data even in remote areas where Mastiffs might wander.
The Whistle Go Explore provides real-time GPS tracking with no distance limits, ideal for Mastiffs that roam far. It includes health monitoring features like scratching and licking alerts, which can help detect skin issues common in Mastiffs. The rugged design holds up to rough play.
Tractive Smart Dog GPS Tracker with 6 Month Subscription
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Tractive offers unlimited range and live tracking with a customizable safe zone, perfect for Mastiffs that need a large fenced area. Its subscription is affordable, and the waterproof design handles all weather. The collar attachment is sturdy enough for strong pullers.
The Garmin TT 15X is a bundle with a handheld device, eliminating the need for a subscription. It's simple to use with a large display, and the collar fits Mastiff necks comfortably. The long battery life (up to 60 hours) supports extended hikes or farm use.
Spot On combines GPS tracking with a virtual fence system, ideal for Mastiffs that need boundaries without physical fences. It uses real-time GPS to create invisible fences, and the collar is durable with a breakaway safety feature. Perfect for rural properties where Mastiffs can roam.
Mastiffs have thick necks, so ensure the tracker's collar strap fits necks up to 30 inches or more. Look for reinforced stitching and heavy-duty buckles to withstand a powerful dog's pull.
02
Battery Life for Long Walks
Mastiffs benefit from regular exercise, and long walks or hikes require a tracker with a battery lasting at least several days. Opt for rechargeable models with low-power modes to avoid frequent charging.
03
GPS Accuracy in Rural Areas
Mastiffs often live on farms or in suburban areas with large yards. Choose a tracker with LTE-M or satellite connectivity for accurate location in areas with limited cell coverage.
04
Health Monitoring Features
Mastiffs are prone to skin infections and joint issues. Some trackers offer activity and health alerts that can help you monitor for changes in behavior or scratching, prompting early vet visits.
Living With It
Care, Cost and Maintenance
Fitting the Collar Correctly
Ensure the tracker collar is snug but not tight. You should be able to fit two fingers between the collar and your Mastiff's neck. Check for chafing regularly, especially around the thick fur.
Charging and Maintenance
Recharge the tracker as recommended, typically every few days to weeks. Clean the contact points with a dry cloth to prevent corrosion. Store the tracker in a cool, dry place when not in use.
Using the Mobile App
Set up safe zones and alerts in the app. Monitor your Mastiff's location and activity levels. Share access with family members for added safety.
Backup Identification
Always keep a traditional ID tag on your Mastiff's collar as a backup. GPS trackers can fail or lose battery, so a tag with your contact information is essential.
Pro tip
Our team suggests testing the tracker's safe zone alerts in your yard before relying on it. Mastiffs can test boundaries, so ensure the virtual fence or alert system is set to a generous perimeter to avoid false alarms.
Frequently asked questions
Will a GPS tracker fit my Mastiff's thick neck?
Yes, many trackers come with extended straps or XL sizes. The Garmin TT 15X fits up to 38 inches, and the Fi Series 3 fits up to 36 inches. Always measure your Mastiff's neck before purchasing.
How long does the battery last on a GPS tracker for a Mastiff?
Battery life varies from 7 days (Tractive) to 3 months (Fi Series 3). For Mastiffs that go on long walks, a tracker with at least 20 days of battery is recommended to avoid frequent charging.
Do GPS trackers work in rural areas where Mastiffs might roam?
Yes, models with LTE-M or satellite connectivity (like Fi Series 3 and Whistle Go Explore) work in areas with cell coverage. For remote areas, the Garmin TT 15X uses proprietary GPS without cellular dependency.
Can a GPS tracker help with training or containment?
Some trackers like Spot On offer virtual fence systems that can alert you when your Mastiff leaves a designated area. They are not a substitute for training but can aid in containment.
Is a subscription required for GPS tracking?
Most trackers require a monthly or annual subscription for cellular data. The Garmin TT 15X does not require a subscription, but it has a higher upfront cost and limited range compared to cellular models.
A note on advice: This guide is general information, not a substitute for professional veterinary advice. Talk to your vet before changing your dog's diet or care routine, especially if your dog has allergies, kidney disease, pancreatitis, obesity, heart disease or any other medical condition.
Transparency
How we made this guide
How we chose. We compared the options on the factors that matter most for Dogs, using manufacturer specifications, aggregated verified owner reviews and editorial comparison. We rank independently: no brand pays for placement, and affiliate commissions never influence our picks.
How it was written. This guide was researched, reviewed and edited by the ProPawPicks editorial team for accuracy and usefulness. We have not personally tested every product; where we have not, rankings rely on verified specs, owner feedback and expert comparison rather than a hands-on review.
Affiliate disclosure. ProPawPicks is reader-supported. If you buy through links on our site, we may earn a commission at no extra cost to you. See our affiliate disclosure.
Some links below are affiliate links. If you buy through them we may earn a small commission at no extra cost to you. Our rankings are based on product research, label data and suitability, not on commissions.
