Gallagher S12 Lithium Solar vs Zareba 25 Mile Battery EDC25M-Z

Last updated: November 3, 2026

The Zareba 25 Mile Battery EDC25M-Z is the better electric fence energizer overall, rated 3.9 to 2.6. The Zareba 25 Mile Battery EDC25M-Z leads on lightning cover. The Gallagher S12 Lithium Solar wins on warranty. The Zareba 25 Mile Battery EDC25M-Z costs $20.05 less ($159.94 vs $179.99).

Prices were last checked November 3, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

Gallagher S12 Lithium Solar vs Zareba 25 Mile Battery EDC25M-Z

Which should you buy?

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every battery and solar electric fence energizer; a clear win is highlighted. How we rank explains each one.

Factor weightZareba 25 Mile Battery EDC25M-ZGallagher S12 Lithium Solar
Overall rating3.9/52.6/5
Value 35%68 $159.94 per joule ($159.94, 1 J output)7 $2,249.88 per joule ($179.99, 0.1 J output, estimated from stored joules)
Output 25%68 1 J output11 about 0.1 J output (0.1 J stored)
Warranty 25%50 2-year warranty100 3-year warranty
Lightning cover 15%100 warranty covers lightning damage0 lightning damage not covered

Specifications

Zareba 25 Mile Battery EDC25M-ZGallagher S12 Lithium Solar
Output
PowerBatterySolar
Output energy1 Jabout 0.1 J
Stored energy1.3 J0.1 J
Rated fence length25 miles4 miles
Peak voltage11.5 kV-
Low impedanceYes-
Build
Battery12 V-
Lightning coverYesNo
Warranty2 years3 years

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