Not sure if 1 joule is the right size for your fence? Use our free electric fence charger sizing calculator — answer 5 questions and get a matched recommendation. Reliable 1 Joule Power for Smaller Fencing Systems — Mains, Battery, or SolarNot every operation needs a 12-joule powerhouse. For smaller paddocks, cross-fencing, or starter setups, the Speedrite 1000 Energizer delivers clean, consistent 1-joule output with the flexibility to run on mains power, 12V battery, or solar — so you can place it wherever your fence needs it, not just where the outlet is.The easy-to-read LED light bar gives you an instant read on output voltage and battery condition without pulling out a tester. The Day/Night sensor automatically adjusts pulse speed based on conditions, and the large front-mounted terminals make connecting fence wire fast and frustration-free. Includes battery lead and mains power adaptor right out of the box.FeaturesVersatile Power OptionsRun on 12V battery, 100–240V mains, or solar — place the energizer where your fence needs it, not where the power is.LED Voltage & Battery DisplayInstant read on output voltage and battery condition at a glance — turns red when heavily loaded so you know when to investigate.Day/Night SensorAutomatically adjusts pulse speed based on time of day — faster pulses at night when animals are more active, slower during the day.Large Front-Mounted TerminalsSlotted terminals accept up to two fence wires and make connections fast and easy — no fumbling with small hardware.Versatile Mounting OptionsMount on a wall, post, or fence wire — indoor or outdoor installation depending on your setup.Solar CompatibleConnect solar panels to charge the 12V battery for off-grid installations.Includes Battery Lead & Mains AdaptorEverything you need to get started right out of the box.Specifications Maximum Output Energy: 1.0 J Maximum Stored Energy: 1.4 J Input Voltage: 12V / 100–240V Dimensions: 9.5" x 6.7" x 3.0" Weight: 4.0 lbs Includes: Battery lead + mains power adaptor Right-sized power for smaller operations — the Speedrite 1000 keeps your fence hot without overbuilding for what you need. Compare across the full lineup: See all electric fence energizers we carry — Speedrite, Gallagher, Cyclops, and Patriot — sized 0.12 to 86 joules. Need help sizing? Use our free electric fence charger sizing calculator or call 888-251-3934.
