Gallagher S120 Lithium Solar
The strongest all in one solar charger here, for remote cattle pastures and rotational grazing without batteries to swap.
Amazon $549.99$549.99
The Gallagher S120 Lithium Solar and the Zareba 30 Mile Solar ESP30M-Z are evenly matched, rated 3.4 and 3.4. The Gallagher S120 Lithium Solar leads on warranty and output. The Zareba 30 Mile Solar ESP30M-Z wins on lightning cover. The Zareba 30 Mile Solar ESP30M-Z costs $250 less ($299.99 vs $549.99).
Zareba 30 Mile Solar ESP30M-Z
For remote pastures where a small solar unit is too weak: it runs a long cattle fence from its own panel and battery.
Amazon $299.99$299.99
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Gallagher S120 Lithium Solar for warranty (3-year warranty vs 2-year warranty) and output (0.9 J output vs 0.5 J output).
- Choose the Zareba 30 Mile Solar ESP30M-Z for lightning cover (warranty covers lightning damage vs lightning damage not covered).
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 weight | Gallagher S120 Lithium Solar | Zareba 30 Mile Solar ESP30M-Z |
|---|---|---|
| Overall rating | 3.4/5 | 3.4/5 |
| Value 35% | 38 $585.10 per joule ($549.99, 0.9 J output) | 37 $599.98 per joule ($299.99, 0.5 J output) |
| Output 25% | 67 0.9 J output | 53 0.5 J output |
| Warranty 25% | 100 3-year warranty | 50 2-year warranty |
| Lightning cover 15% | 0 lightning damage not covered | 100 warranty covers lightning damage |
Specifications
| Gallagher S120 Lithium Solar | Zareba 30 Mile Solar ESP30M-Z | |
|---|---|---|
| Output | ||
| Power | Solar | Solar |
| Output energy | 0.9 J | 0.5 J |
| Stored energy | 1.2 J | - |
| Rated fence length | 35 miles | 30 miles |
| Rated area | 120 acres | - |
| Peak voltage | 10 kV | 7.8 kV |
| Low impedance | - | Yes |
| Build | ||
| Battery | - | 12 V |
| Solar panel | 12 W | 5 W |
| Lightning cover | No | Yes |
| Warranty | 3 years | 2 years |
| Released | 2026-01-15 | - |