Parmak Magnum 12
A rugged, efficient battery charger for remote pastures and predator control, with a long lightning covered warranty.
Amazon $133.08$133.08
The Parmak Magnum 12 is the better electric fence energizer overall, rated 4.9 to 4.0. The Parmak Magnum 12 leads on lightning cover. The Parmak Magnum 12 costs $436.92 less ($133.08 vs $570).
Gallagher MBS400 Multi-Power
For ranchers who want one powerful charger that can move between a barn outlet and a battery at a remote pasture.
Amazon $570$570
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 Parmak Magnum 12 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 | Parmak Magnum 12 | Gallagher MBS400 Multi-Power |
|---|---|---|
| Overall rating | 4.9/5 | 4.0/5 |
| Value 35% | 98 $42.93 per joule ($133.08, 3.1 J output) | 65 $183.87 per joule ($570, 3.1 J output) |
| Output 25% | 94 3.1 J output | 94 3.1 J output |
| Warranty 25% | 100 3-year warranty | 100 3-year warranty |
| Lightning cover 15% | 100 warranty covers lightning damage | 0 lightning damage not covered |
Specifications
| Parmak Magnum 12 | Gallagher MBS400 Multi-Power | |
|---|---|---|
| Output | ||
| Power | Battery | Battery |
| Output energy | 3.1 J | 3.1 J |
| Stored energy | - | 4 J |
| Rated fence length | 30 miles | 60 miles |
| Rated area | - | 280 acres |
| Peak voltage | 13.5 kV | - |
| Low impedance | Yes | Yes |
| Build | ||
| Battery | 12 V | 12 V |
| Lightning cover | Yes | No |
| Warranty | 3 years | 3 years |