You might be underestimating how much damage a .22 round to can do to something, especially when that something is probably at least like 60% lithium ion battery by volume. Yeah, .22s are small by bullet standards and have low stopping power, but they're still lethal.
That said, if you've got a 308 handy, that'll work reliably too. You won't be silencing it, but feel free to blow a hole clean through one of these machines and enjoy the fireworks when its battery lights off.