<p><strong>Circuitcell - The ONLY Rechargeable Battery Compatible with Invisible Fence Brand Collars </strong></p> <p>    •  Compatible with Invisible Fence brand R21, R22, R51 & MicroLite collars</p> <p>    •  5-year battery life  </p> <p>    •  Equivalent to 20 disposable batteries</p> <p>    •  Charge just once a month</p> <p>    •  Purchase additional batteries for multiple pets</p> <p>    •  No battery plans </p> <p>    •  US Patented</p> <p>___________________________________________________</p> <p><strong>Includes</strong></p> <p>    •  Circuitcell battery : Qty 1</p> <p>    •  Circuitcell charger : Qty 1</p> <p>___________________________________________________</p> <p><strong>Battery Features</strong>   </p> <p>    •  Power indicator light</p> <p>    •  Short circuit protection</p> <p>    •  Over discharge protection</p> <p><strong>Charger Features</strong>   </p> <p>    •  Intelligent charger</p> <p>    •  Short circuit protection</p> <p>    •  Charge status indicator</p> <p><strong>Battery Indicator Light </strong></p> <p>    •  Blinks green every 30 sec - normal condition</p> <p>    •  Blinks red every 15 sec - needs charge</p> <p>    •  No light blinking - protection mode charge battery</p> <p><strong> </strong><strong>Charger Indicator Light</strong></p> <p>    •  Red - charging battery</p> <p>    •  Green - charging complete</p> <p> </p> <p><strong>Money Back Guarantee</strong></p>