really appreciate your series of articles on your Grand Design upgrades. I have a 2022 337RLS, which appears to have identical electrical system as your 303RLS. Interestingly, and independently, I have done much the same as you, I have: 4 x GoPower 100 ampHr Li batteries, same Renogy 3000 watt inverter, transfer switch, and still use factory Furion Solar controller. I did change my power converter charger to: Go Power! GPC-100-MAX 100 Amp 4-Stage Converter/Battery Charger set on Li mode. I found the best charging I could get was around 30-40 amps. I then purchased a second Go Power! GPC-100-MAX 100 Amp 4-Stage Converter/Battery Charger, which I connect directly to the batteries. If I plug in to shore power, but disconnect the batteries from the coach Go Power! GPC-100-MAX 100 Amp 4-Stage Converter/Battery Charger, and then connect the second Go Power! GPC-100-MAX 100 Amp 4-Stage Converter/Battery Charger to the batteries, which are now isolated from the coach, I can get 60-70 amps of charging. But here is the interesting thing, if I leave the batteries connected to the coach Go Power! GPC-100-MAX 100 Amp 4-Stage Converter/Battery Charger, AND I connect the second Go Power! GPC-100-MAX 100 Amp 4-Stage Converter/Battery Charger directly to the batteries, I get about 110-120 amps charging. So, say after boondocking, offline from shore power,I have run my batteries down to 50%, that is I now have 200 ampHrs left, I can recharge them at ~100 - 120 amps, and they will reach 100% again with 2 hours on the generator or shore power. As you know, the Li batteries charge a little faster up to 80% and then gradually decrease charging speed a bit until close to 100%. In BC, Canada, generator times at our provincial parks are 9am to 11 am, and 6pm to 8 pm. Because I can rapidly recharge, I use the inverter for anything or everything (except AC), knowing I can so easily recharge.
Thank you for sharing. not an expert but i do run my bike battery without a BMS. that being said... you can charge lithium's with a regular charger. i wouldn't do it like that but you can. A real charger limits the volts and amps at the top of your charge to save the battery wear/over volts. you can start a fire like this so good luck and be careful. ps i charge the bike with a laptop power adapter and a boost buck converter. in case you want to look in to that idea.
What i am getting from this is a non lithium converter/charger can charge a lithium battery to 100% Am i correct or is it the solar that brought it to 100%
Yes, I was able to reach 100% SOC, but the PD9260C alone would not be a reliable option for keeping a LiFePo4 fully charged. Because this converter/charger has a boost mode capable of producing 14.4 volts, if you can force it into boost made it will top the battery off. PD sells a pendant that allows you to do just that.
