W210 Battery Charging Question

[deltajetfixer]

I'm getting ready to re-ring the fuel system with Viton.

In preparation for the inevitable air purging, I'm wondering if I can recharge the battery through the jumper cable post under the hood?

The thought occured to me while contemplating the removal of both child car seats.

I'd really, really hate to damage some electronics by not isolating the battery.

Comments are appreciated!