{"product_id":"perimeter-technologies-four-pack-dog-fence-batteries-for-invisible-fence-r21-r22-r51-microlite-collars","title":"Perimeter Technologies Four Pack Dog Fence Batteries for Invisible Fence R21\/R22\/R51 \u0026 Microlite Collars","description":"\u003cp\u003eRefresh your Invisible Fence setup with a cost-conscious, reliable power option from Perimeter Technologies. This four-pack of replacement batteries is designed to fit compatible receiver collars, giving you an approachable way to keep your boundary system running smoothly without paying premium brand-name prices. Built with care and precision, these batteries aim to deliver steady power and consistent performance for everyday use.\u003c\/p\u003e\n\n\u003ch3\u003eWhy consider this four-pack\u003c\/h3\u003e\n\u003cp\u003ePerimeter Technologies targets practical, everyday needs with a focus on compatibility, weight, and durability. The four-pack is engineered to work with the Invisible Fence R21, R22, R51, and Microlite receiver collars, making it a versatile choice for households with multiple collars or replacements over time. The design emphasizes a balance between energy density and a lighter collar weight, so your pet experiences comfortable wear while the collar stays functional throughout the day.\u003c\/p\u003e\n\n\u003ch3\u003eKey technology and design details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible replacement battery designed for Invisible Fence receiver collars, specifically the R21, R22, R51, and Microlite models.\u003c\/li\u003e\n  \u003cli\u003eEngineered to seamlessly replace the current battery in the listed collar models, simplifying maintenance.\u003c\/li\u003e\n  \u003cli\u003eNew and improved Japanese lithium-ion cells provide higher energy density while keeping the collar lightweight.\u003c\/li\u003e\n  \u003cli\u003eRobust components deliver extended durability and enhanced safety features compared to standard batteries, plus a tight rubber waterproof seal for protection when installed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat you get in the package\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFour high-quality replacement batteries designed for compatible Invisible Fence collars.\u003c\/li\u003e\n  \u003cli\u003eThoughtful engineering that prioritizes performance and value for busy households.\u003c\/li\u003e\n  \u003cli\u003eA practical, long-term solution that can help keep your boundary system ready when you need it most.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eReal-world use often centers on dependable power during daily routines—outdoor play, lawn maintenance, and routine training sessions. The combination of higher energy density and a lightweight design can contribute to more comfortable wear for your dog, while the waterproof seal helps protect the electronics inside the collar when exposed to weather or moisture. While results can vary, the emphasis is on delivering steady, reliable power that supports your existing boundary setup without forcing you to overpay.\u003c\/p\u003e\n\n\u003ch3\u003eTips for best results\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFollow collar-specific installation steps to ensure the waterproof seal remains intact.\u003c\/li\u003e\n  \u003cli\u003eInspect the seal and battery contacts if you notice any change in performance, and replace as needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIn sum, this four-pack from Perimeter Technologies offers a practical alternative for keeping your Invisible Fence collars powered. It’s designed to align with existing models, maintain a comfortable wear for your dog, and provide a durable, cost-effective option for ongoing boundary management.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these batteries compatible with my Invisible Fence receiver collars?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, they fit Invisible Fence R21, R22, R51, and Microlite receiver collars as replacement batteries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these batteries affect the collar's waterproof seal?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The design supports proper sealing when installed correctly, helping maintain waterproof protection of the collar.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Perimeter Technologies","offers":[{"title":"Default Title","offer_id":40563607863425,"sku":"B01M688X32","price":87.9,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/4757\/3633\/files\/perimeter-technologies-four-pack-dog-fence-batteries-r21-r51.jpg?v=1765866379","url":"https:\/\/petiva.ca\/products\/perimeter-technologies-four-pack-dog-fence-batteries-for-invisible-fence-r21-r22-r51-microlite-collars","provider":"Petiva","version":"1.0","type":"link"}