Dog Collar Batteries for R21 R22 R51 and Microlite Collar Battery, High Capacity Compatible with Invisible Fence Receiver Collar Batteries, 4 Packs Lasting Replacement Pet 3V Batteries - Gray
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AI Verdict
A 4-pack of 3V lithium-ion replacement batteries weighing 0.634 ounces, designed for R21, R22, R51, and Microlite Invisible Fence collars.
These batteries are a direct fit for specific Invisible Fence collar models (R21, R22, R51, Microlite) and offer a lower-cost option compared to OEM. However, user feedback indicates a risk of inconsistent quality and shorter lifespan, making them a gamble for critical pet containment.
If consistent, long-term performance is your priority, look for batteries with more verified user reviews praising longevity and reliability, even if it means a higher price point.
Regret Score™
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Issues discovered after purchase
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Pros
- Specifically engineered for R21, R22, R51, and Microlite Invisible Fence receiver collars, ensuring direct fitment.
- Features a built-in 3V lithium battery for power delivery.
- Includes a rubber gasket for a watertight seal, protecting the collar's electronics from moisture.
- Manufactured with zero mercury and zero cadmium, making them environmentally friendlier.
- Offers a cost-effective alternative to OEM Invisible Fence brand batteries.
- Weighs 0.634 ounces, maintaining a lightweight profile for the dog's collar.
Cons
- Some users report batteries arriving dead or failing shortly after installation.
- Reported instances of shorter lifespan compared to original Invisible Fence brand batteries.
- Manufacturing inconsistencies, such as improperly crimped prongs, can lead to poor contact and non-functionality.
- Concerns from users that the batteries may not provide sufficient power, leading to the collar not functioning correctly.
Dimension Scores
This product is a battery for a dog collar and has no image capture capabilities.
As a power source for a dog collar, this product does not feature any autofocus mechanisms.
This product is a battery and is not designed to record or process video.
Each battery weighs 0.634 ounces, making it extremely lightweight and portable for its intended use in a dog collar.
Best For
- Owners of Invisible Fence R21, R22, R51, or Microlite collars needing replacement batteries.
- Pet owners looking for a lower-cost alternative to brand-name Invisible Fence batteries.
- Households with multiple dogs using compatible Invisible Fence collars, requiring a multi-pack solution.
Not Recommended For
- Users expecting the exact same performance and longevity as OEM Invisible Fence brand batteries.
- Owners of non-Invisible Fence brand collars (e.g., PetSafe, PetStop, DogWatch) as compatibility is not guaranteed.
Watch Out For
- Some users received batteries that were dead on arrival, with one report stating 2 out of 6 batteries were dead in a pack.
- A user experienced collars flashing red the day after installation, indicating a very short functional life.
- Manufacturing defects, specifically prongs not being properly crimped, caused issues with making contact in the receiver.
- One user noted their dog went past the invisible fence without correction, suggesting insufficient power delivery from the battery.
Full Specifications
| UPC | 730688700939 |
| ASIN | B0F6YD4HV8 |
| Brand | oiyceiei |
| Model Name | oiyceiei |
| Item Weight | 0.634 ounces |
| Manufacturer | oiyceiei |
| Item model number | oiyceiei |
| Package Dimensions | 5.51 x 3.86 x 0.79 inches |
What Buyers Say
While these batteries are marketed as a compatible and cost-effective alternative for Invisible Fence collars, user experiences are quite mixed. Many buyers are drawn to the lower price point compared to the official brand. However, a recurring theme in feedback for similar third-party batteries points to significant quality control issues, with some units arriving non-functional or failing very quickly after installation. This inconsistency means that while some users find them to be a satisfactory replacement, others report their dogs' collars losing power or not delivering proper corrections, undermining the primary function of the invisible fence system.
“Man, these things are a crapshoot. Half the pack was dead on arrival, and the one that worked barely lasted a week. My dog almost got out! Never again, I'm just buying the expensive ones from now on.”
Common Praise
- Significantly cheaper than the Invisible Fence brand batteries.
- Directly compatible with R21, R22, R51, and Microlite collars.
- Easy to install using the standard coin-lock mechanism.
- The 4-pack offers a convenient supply for multiple replacements.
Common Complaints
- Batteries arrived dead or stopped working within a day or two of use.
- Shorter battery life than expected or compared to OEM batteries.
- Poor physical fit or contact due to manufacturing flaws like improperly crimped prongs.
- Collar not functioning correctly, with dogs passing through the fence boundary without correction.
Ownership Tips
- You might need to test each battery upon arrival to ensure it's functional before relying on it.
- Keep a spare OEM battery on hand in case these fail prematurely, especially if your dog's safety depends on the collar.
- Check the battery contacts in your collar and on the battery itself for any signs of poor fit or manufacturing defects.
- Monitor your dog's collar closely for the first few days after installing a new battery to confirm it's holding a charge and working correctly.
Frequently Asked Questions
Are these batteries compatible with all Invisible Fence collars?
No, these batteries are specifically designed for Invisible Fence R21, R22, R51, and Microlite receiver collars. They are not compatible with other brands like PetSafe or PetStop.
What type of battery is this?
These are 3-volt lithium-ion batteries. They are designed to be lightweight and have a high energy density.
Are these batteries waterproof?
Yes, the batteries are designed with good waterproof performance and include a built-in rubber gasket to create a watertight seal when installed correctly in the collar.
How long do these batteries typically last?
The product claims a long service life, but user experiences vary. Some original Invisible Fence batteries are cited to last 3-4 months, while some third-party users report much shorter lifespans, even days.
Are these batteries environmentally friendly?
Yes, these batteries are manufactured with zero mercury and zero cadmium, making them a more environmentally conscious choice.
Buying Guide
When you're buying replacement batteries for your dog's invisible fence collar, you're really looking for consistent power delivery and a predictable lifespan. The collar needs a steady 3V to work right and keep your pet safe. Cheaper options can be tempting, but if the battery dies unexpectedly or doesn't provide enough juice, your fence system is useless, which is a big deal for your dog's safety.
Voltage (3V)
This is the electrical 'strength' the battery provides. Your Invisible Fence collar is designed for a specific voltage (3V), and if the battery doesn't consistently deliver that, the collar won't function properly, meaning your dog might not get the correction they need to stay in the yard.
Compatibility (R21, R22, R51, Microlite)
Just like a phone charger only works for certain phones, these batteries are shaped and designed to fit specific Invisible Fence collar models. If it doesn't list your collar model, it simply won't fit or connect correctly, regardless of voltage.
Waterproof Design
Your dog's collar is outside, exposed to rain and splashes. A battery with a good waterproof seal protects the internal electronics of the collar from moisture damage, which can extend the life of your expensive collar itself.
Alternatives
If you need guaranteed performance and longer, more consistent battery life, look for batteries explicitly labeled as OEM (Original Equipment Manufacturer) or those with extensive positive user reviews specifically mentioning long, reliable use, even if they cost more upfront.
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