What is a “low-impedance” fence charger?
Basically, a low-impedance fence charger will transfer it’s power more efficiently to your fence than higher impedance models. Maximum power transfer occurs when the impedance of the fence charger matches the impedance of the fence. The closer these impedances match, the more power is transferred. A fence is typically a low impedance load, but this impedance is lowered when stray branches, grass, weeds, vines, etc. come in contact with your fence. A low-impedance fence charger is still a close enough impedance match, so that most of the fence charger’s power can still be put out onto your fence to keep it suffiiciently charged, even under these conditions.
As always, for best results, keep your charged fence clear of branches and overgrowth vegetation.
