{"product_id":"perimeter-technologies-two-pack-dog-fence-batteries-for-invisible-fence-receiver-collars-r21-r22-r51-microlite","title":"Perimeter Technologies Two-Pack Dog Fence Batteries for Invisible Fence Receiver Collars (R21\/R22\/R51\/Microlite)","description":"\u003ch2\u003ePremium replacement batteries for Invisible Fence collars\u003c\/h2\u003e\n\u003cp\u003eKeep your dog’s boundary system ready with a cost-effective, compatible two-pack from Perimeter Technologies. These batteries are designed to replace the original units in Invisible Fence brand receiver collars, including R21, R22, R51, and Microlite models. The pair offers convenience and value, so you can swap in a fresh unit without downtime.\u003c\/p\u003e\n\u003cp\u003eEngineered with lithium-ion chemistry, the cells emphasize energy density so the pack can help maintain responsive collar performance while keeping the overall weight light for your dog to wear comfortably.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Invisible Fence collars R21, R22, R51, and Microlite.\u003c\/li\u003e\n  \u003cli\u003eLithium-ion cells provide higher energy density for longer potential runtime.\u003c\/li\u003e\n  \u003cli\u003eLightweight design reduces bulk in the collar while delivering steady power.\u003c\/li\u003e\n  \u003cli\u003eDurable components support everyday use and reliable operation in outdoor settings.\u003c\/li\u003e\n  \u003cli\u003eTight waterproofing seal protects the assembly when installed in the collar.\u003c\/li\u003e\n  \u003cli\u003eDesigned as a straightforward replacement, ensuring a smooth swap from your current battery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat you get\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eTwo replacement batteries in one package.\u003c\/li\u003e\n  \u003cli\u003eClear fit in the listed collar models, helping you stay ready for outdoor adventures.\u003c\/li\u003e\n  \u003cli\u003ePeace of mind with a rugged, weather-ready seal and dependable power delivery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse cases include routine swaps to minimize downtime, weekend adventures, and travel where a quick battery change keeps the boundary system active. While results can vary, this two-pack offers a practical, value-focused option for keeping your dog within the designed perimeter.\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: Is the Perimeter Technologies two-pack battery compatible with my Invisible Fence collar?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The pack works with Invisible Fence collars R21, R22, R51, and Microlite as a replacement option.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the key benefits of this replacement battery?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Lithium-ion cells deliver higher energy density, the unit remains lightweight, and a waterproof seal supports reliable outdoor use.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Perimeter Technologies","offers":[{"title":"Default Title","offer_id":57199230615929,"sku":"B00BR0CA0K","price":28.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/8934\/1049\/files\/perimeter-technologies-two-pack-dog-fence-battery-invisible-fence-r21.jpg?v=1777774264","url":"https:\/\/petlyvox.com\/products\/perimeter-technologies-two-pack-dog-fence-batteries-for-invisible-fence-receiver-collars-r21-r22-r51-microlite","provider":"petlyvox","version":"1.0","type":"link"}