Apologies if this topic is covered.   I want to power my rig using DC from a Deep Cycle battery. Helix is the only device with onboard power converter (probably no coincidence it's also the biggest power drain).   Per the labeling, Helix requires 60 watts AC. Given other Line6 gear powered by 12v / 5a it seems pretty safe to assume that's how 60 watts is derived.   It's fairly easy to connect a power inverter to a battery. The lunacy with inverting is that the power costs 85% inefficienc
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