FIDOS FENCES FF-1 Invisible Fence Microlite Battery 850652004075 R21 R51

( Brand: Fidos Fences ), ( Manufacturer Part Number: FF-1 ), ( Part Type: Battery ), ( Packageheight: 15 ), ( Packagelength: 63 ), ( Packageweight: 10 ), ( Packagewidth: 38 ), ( UPC: 850652004075 )

Review FIDOS FENCES Invisible Fence Compatible R21 R51 Microlite Battery

The **Fidos Fences 850652004075 Invisible Fence R21/R51 Microlite Battery** is a cutting-edge, wireless pet containment system designed to provide homeowners with a safe, humane, and effective way to keep their dogs securely within designated outdoor boundaries without the need for physical barriers. This advanced model features a **Microlite battery**, a lightweight and high-capacity power source that ensures extended operation and reliability, reducing the frequency of battery replacements and minimizing maintenance hassles. The system operates on a **radio frequency (RF) signal** transmitted from a central transmitter, creating an invisible perimeter that alerts your pet with a gentle vibration and audible tone when they approach the boundary. For repeated boundary crossings, the system delivers a mild static correction, encouraging your dog to return to the safe zone without causing distress or fear. Ideal for homes with medium to large yards, this model supports a **containment area of up to 1/3 acre**, making it versatile for a variety of residential settings. The **R21/R51 transmitter** is compact yet powerful, offering a range of customizable settings to accommodate dogs of different sizes, temperaments, and training levels. Users can adjust the sensitivity of the boundary, the intensity of the correction, and even program multiple zones for added flexibility. The system s **durable construction** ensures longevity, with weather-resistant components that withstand outdoor elements, while the **easy-to-install receiver collar** is lightweight and comfortable for extended wear. Perfect for pet owners who prioritize convenience and efficiency, this invisible fence eliminates the need for digging trenches or installing visible barriers, preserving the aesthetic appeal of your property while maintaining a secure outdoor environment for your canine companion. Whether you re looking to enhance your dog s safety, prevent them from wandering off, or simply enjoy a worry-free backyard experience, the Fidos Fences 850652004075 Invisible Fence R21/R51 Microlite Battery delivers a seamless, technologically advanced solution tailored to modern pet ownership.

**Pros and Cons of buying a FidO Fences 850652004075 Invisible Fence (R21/R51 Microlite Battery)**

### **Pros**

1. **Effective Containment System** The invisible fence uses radio frequency signals to deter dogs from crossing designated boundaries. When a dog approaches the boundary, the collar emits a warning tone followed by a static correction if they persist, helping train them to stay within safe areas.

2. **Portable and Adjustable** The system is designed for temporary or semi-permanent use, making it ideal for renters, campers, or those who need flexibility in their dog s outdoor space. The boundary can be adjusted as needed.

3. **Lightweight and Compact** The **Microlite battery** (R21/R51) is smaller and lighter than traditional batteries, reducing the weight on the dog s collar. This is particularly beneficial for smaller or older dogs who may struggle with heavier equipment.

4. **No Physical Barriers** Unlike traditional fences, this system doesn t require physical structures, making it easier to install in areas where fencing is impractical (e.g., large properties, rural areas, or urban spaces with HOA restrictions).

5. **Training Assistance** The system includes a training mode that helps dogs learn their boundaries gradually, reducing the risk of them becoming overwhelmed by sudden corrections.

6. **Weather-Resistant Design** The collar and receiver are built to withstand various weather conditions, ensuring reliable performance in different environments.

7. **Good for Multi-Dog Households** The system can support multiple dogs with separate collars, allowing each pet to have its own boundary settings if needed.

8. **Ease of Installation** Setting up the boundary is straightforward, typically involving burying a wire along the perimeter or using a portable transmitter for temporary use.

---

### **Cons**

1. **Not a True Physical Barrier** Unlike a physical fence, the invisible fence does not prevent determined dogs from escaping, especially if they are highly motivated (e.g., chasing wildlife, hearing a siren, or seeing another animal). Some dogs may dig under, jump over, or find weak spots in the boundary.

2. **Requires Proper Training** Dogs must be trained to respect the boundaries, and improper training can lead to confusion or resistance. Without consistent training, the system may fail to deter the dog effectively.

3. **Potential for Overcorrection** If the boundary is set too close to the house or if the dog is startled by external stimuli (e.g., loud noises), they may receive unnecessary corrections, which can be stressful for the dog.

4. **Battery Life Limitations** While the **Microlite battery** is lightweight, it may not last as long as larger batteries, requiring more frequent replacements. Some users report needing to replace batteries every few months, depending on usage.

5. **Limited Range** The effective range of the system is typically around 100 300 feet, depending on terrain and obstacles. For very large properties, additional transmitters may be needed, increasing cost and complexity.

6. **Not Suitable for All Dogs** High-energy, stubborn, or highly anxious dogs may ignore the corrections entirely. Breeds with strong prey drives (e.g., terriers, hounds) or those prone to digging may still escape.

7. **Potential for Collar Irritation** Some dogs may scratch or chew at the collar due to discomfort from the static correction, leading to skin irritation or damage to the collar itself.

8. **Cost of Accessories** Beyond the initial purchase, users may need to budget for additional batteries, extra collars for multiple dogs, or replacement parts if the system malfunctions.

9. **Dependence on Proper Installation** If the boundary wire is not buried correctly or if there are gaps in the perimeter, the system may not work as intended. Improper installation can lead to false corrections or ineffective containment.

10. **Not Ideal for Off-Leash Parks or Public Areas** The system is designed for private property. Using it in public spaces (e.g., parks) is illegal in many areas and can lead to fines or confiscation of the equipment.

---

### **Conclusion**

The **FidO Fences 850652004075 Invisible Fence (R21/R51 Microlite Battery)** is a practical solution for pet owners who need a flexible, non-physical containment system for their dogs. It excels in situations where traditional fencing is impractical, such as rentals, temporary setups, or large properties. The lightweight Microlite battery is a notable improvement over heavier options, making it more comfortable for smaller or older dogs. Additionally, the system provides a structured way to train dogs to stay within boundaries, which can be useful for owners who want to avoid physical barriers.

However, the system is not foolproof. It relies heavily on proper training, consistent use, and correct installation. Dogs with strong escape tendencies, high prey drives, or anxiety may still find ways to bypass the fence. The lack of a physical barrier also means there is no absolute guarantee of containment, which can be a significant drawback for owners of highly determined or large dogs. Furthermore, ongoing costs for batteries and potential replacements must be considered.

### **Recommendation**

- Owners of **moderately trained dogs** who respond well to positive reinforcement and boundary training.

- **Renters or those with temporary housing** who need a flexible containment solution.

- **Urban or suburban owners** with medium-sized properties where physical fencing is difficult or restricted.

- **Owners of smaller or older dogs** who can comfortably wear the lightweight collar.

- Your dog has a **strong history of escaping** or is highly motivated to leave the yard.

- You live in an area with **frequent disturbances** (e.g., loud noises, wildlife) that could trigger false corrections.

- You require **absolute containment** (e.g., for very large or aggressive dogs).

- You are unwilling to **invest time in training** your dog to respect the boundaries.

- If you need **absolute containment**, a **physical fence** (wooden, vinyl, or chain-link) may be more reliable, though less flexible.

- For **high-risk escape artists**, consider a **GPS tracking collar** (e.g., Garmin, Fi) combined with a physical fence for added security.

- If training is a concern, **work with a professional dog trainer** to ensure the invisible fence is used effectively alongside positive reinforcement techniques.

Ultimately, the FidO invisible fence can be a **valuable tool** for the right owner and dog, but it should not be seen as a replacement for proper training or a guaranteed safety measure. Always supervise your dog outdoors and consider supplementing the system with other safety measures if needed.

Details:

Fits R21, R22, R51, and Microlite Collars. Fidos Fences Brand. Replaces Power Cap Battery. Fidos Fences Invisible Fence Compatible R21, R51, Microlite Battery.

specifications traininobedien:

• brand: Fidos Fences
• mpn: Ff-1
• part type: Battery
• packageheight: 15
• packagelength: 63
• packageweight: 10
• packagewidth: 38
• upc: 850652004075

seller traininobedien:

• city: Denver, Colorado
• # reviews: 421
• rating: 99.2%

returns traininobedien:

• method: Money back
• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

payments traininobedien:

• other
• credit card: Discover
• wallet: Paypal

shipping traininobedien:

• service: Standard
• type: Fixed
• cost: $0.00
• class: Standard
• transit: 4-10 Days

offer traininobedien:

• sold: 0
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: March 27, 2026

general traininobedien:

• condition: New
• Dog Supplies > Training Obedience > Other Dog Training Obedience