Originally Posted by 0557
On my limited my batts are dead but until I purchase new ones, can the univolt be operated for dc conversion. I live in the trailer at this time.
Your Univolt does not care if the batteries are there or not. But if the batteries are dead, the Univolt will attempt to charge them. If they are really dead, the batteries will absorb a lot of the current the Univolt is producing.
Batteries act as a power filter for the less-than-pure DC waveform the Univolt outputs. While you can safely run without a battery connected, your lights will be dim, and TVs/radios will have a lot of static.
If you have no short term plans to replace the battery, but still need live in your Airstream, a bank of capacitors can be substituted for the battery. Do a forum search on Electrolytic Capacitor
to see what I mean.