What size inverter do I need?
Our Casita trailer has one Duracell AGM battery and a 100V Renogy portable solar panel. By 11 AM, the battery is typically 100% charged so we don't use all that much (I presume). Inside the RV, we u...
Forum Discussion
MrWizard wrote:
Your problem is voltage drop, going to the inverter because the wiring going to the 12v outlet is too small or your battery is not getting fully charged and is slowly dying, 8w at 12v is only 0.75 amps add in inverter conversion loss and is still only 1.0 amps or 12'watts power use,
I suggest you try connecting the inverter directly to the battery, and maybe do your hair cut late in the afternoon just before the end of charging cycle when the battery is at its peak for the day, or maybe plug your inverter into your tow vehicle and cut your hair, even run the engine if need be , 10 minutes every two weeks should not be a strain or a financial drain from fuel costs
If the 8w is correct, it's unlikely to be a voltage drop issue. As you say, that's only 0.75amps plus a little for the inverter to operate. Voltage drop comes into play when you try to force a lot of amps thru too small of a wiring system.
Also, the OP says the battery is hitting full charge, so his battery should be fine.
Yes, connecting with short fat cables to the battery is better but voltage drop is unlikely to be the issue.
