Best Electric fence charger for ultralight backcountry setup

[Guswild]

Hi all!
For those of you out there using electric fence setups could you weigh in on your favorite fence chargers. Name brand, size/weight, and whether they’re solar or battery charged.

 

[bisblue]

I like this One. Gallagher S12, that being said I haven't had others to compare it with.
My wife said it doesn't seem to shock much as the kids were ducking under it. I read that if you take off your shoes it gives more kick since you're more grounded.