Replacement battery for the R21, R22, R51 and Microlite Collars
eXtreme Dog Fence™ saves you money with your compatible replacement battery for Invisible Fence® Brand Receiver Collars R21/R22/R51/Microlite™
eXtreme Dog Fence™ has designed a battery that will replace your current battery perfectly in the above collars.
With much effort placed in the making of your batteries, it is guaranteed you will get a great life expectancy out of your battery
With the components that make up this battery, it gives the power to last longer and have better safety factors than the normal battery and is also waterproof when placed inside of your collar with a tight rubber waterproofing seal.