But you’re overlooking the DIFFERENCEs from camping 50 years ago and that modern tow VEHICLES now USE SMART TECHNOLOGY plus many people use LiFePo4 batteries, solar and much more electric than they did 50 years ago.
Kayteg1 wrote:
RV exist at least for 50 years and they never had B2B chargers, even when old insulators would cut 0.4V right on them.
Nobody in those 50+ years made an issue about not charged batteries.
Fully charged battery is 13.5V, when typical alternator runs 14.5V.
So even when you loose 0.5V on wires, you still will have fully charged battery.
Obviously smaller wire will limit current, so required time will be longer.
Just like AGM batteries are oversold, so are B2B chargers, who are not needed for led-acid batteries.
