The Agrifence Easystop P250 Energiser is simple to use and excellent as a paddock divider or strip grazing unit. It can be run from either a 9v internal dry battery or 12v external rechargeable battery. Supplied with earth stake, output lead and earth lead. Batteries not included. 3 year warranty. Available in one size. The brilliant Easystop P250 Energiser from Agrifence is simple to use and excellent as a paddock divider. The energiser can be run on either a 9v internal dry battery or a 12v external rechargeable battery. Supplied with earth stake, output lead and earth lead. Batteries not included.