Patriot SolarGuard 150
A small acreage solar charger with a long warranty, for goats, horses or a rotational grazing paddock.
Amazon $209$209
The Patriot SolarGuard 150 is the better electric fence energizer overall, rated 3.1 to 2.6. The Patriot SolarGuard 150 leads on warranty. The Zareba 5 Mile Solar ESP5M-Z costs $79.01 less ($129.99 vs $209).
Zareba 5 Mile Solar ESP5M-Z
#11 in Battery and solarFull review
A simple post mounted solar charger for a small paddock, rotational grazing strip or garden fence away from power.
Amazon $129.99$129.99
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 Patriot SolarGuard 150 for warranty (3-year warranty vs 1-year warranty).
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 | Patriot SolarGuard 150 | Zareba 5 Mile Solar ESP5M-Z |
|---|---|---|
| Overall rating | 3.1/5 | 2.6/5 |
| Value 35% | 18 $1,393.33 per joule ($209, 0.1 J output) | 29 $866.60 per joule ($129.99, 0.1 J output) |
| Output 25% | 25 0.1 J output | 25 0.1 J output |
| Warranty 25% | 100 3-year warranty | 0 1-year warranty |
| Lightning cover 15% | 50 lightning cover not stated (neutral score used) | 100 warranty covers lightning damage |
Specifications
| Patriot SolarGuard 150 | Zareba 5 Mile Solar ESP5M-Z | |
|---|---|---|
| Output | ||
| Power | Solar | Solar |
| Output energy | 0.1 J | 0.1 J |
| Stored energy | 0.2 J | - |
| Rated fence length | 10 miles | 5 miles |
| Rated area | 40 acres | - |
| Peak voltage | 9.3 kV | 8.6 kV |
| Low impedance | Yes | Yes |
| Build | ||
| Battery | 6 V | 6 V |
| Lightning cover | - | Yes |
| Warranty | 3 years | 1 year |