Re: Need advice about battery and furnace
You describe classic symptoms of a bad battery that can no longer hold a charge. We have been through that with a Pleasure-way. What year is your Pleasure-way Excel? Because I learned the hard way any Pleasure-way older than 2006 did not have intelligent 3-stage charging and no matter how old your battery you could destroy it in a season, wet cell or AGM, if not careful and knowing what you are doing. You may need a new battery. If your converter is a PD 9100 series a $33 add-on Progressive Dynamics Charge Wizard would solve your problem. If you have a PD 9200 series converter than you do have 3-stage intelligent charging and your battery might simply be going bad.
With a good battery there is no reason why you could not get through a night with a P-W Excel.
2021 Advanced RV 144 custom Sprinter
2015 Advanced RV Extended body Sprinter
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter