04 24 ft komfort charging

Converters there are some that are fantastic (Progressive Dynamics Wizard controlled for example) Some are **** (Magnetek 6300) the Parallex 7300 is an ok charger but may well never top off the batteries.. Plugged in it puts out as the other poster said... It is a single stage.. Parallex also makes a 7300T which is a two stage timed first stage. It can fully charge a battery but... Well a good 3 stage is better.. That said so long as it's working I'd not upgrade.

External chargers... Some are ****. some are decent. Mine is 2 stage and very good at it (No need for the 3rd stage on that type of charger)
It is a Deltran Battery Tender 2-20-70 amp (70 is for jump starting and I've never gotten it to work) but it sure did the job when my Progressive Dynamics died (till i could get a new one a couple days later.. Thankfully PD was only a slight detour for me that week.. i'm serious about the slight detour (Alternative route is all) IT was fun driving through my old stomping grounds.

You have a 7355 power centre with its converter as the lower portion. Drop the top lid and see the circuit breakers and DC fuse panel. You don't need to get at the converter below with the four funny screws holding the cover on.

When plugged in the converter puts out 13.8v DC and that is above full battery voltage of 12.75, so the monitor on the range hood will say the battery is full even if it is dead or not even there.

Check the monitor when not plugged in and your portable charger not on or any solar charging on to get a better reading of the battery's state.

A portable charger on the battery out front will sometimes not work right if the converter is on doing its 13.8v. Try unplugging shore power to kill the converter first then try the portable charger. Once it is going plug back in so the Rv has power again, and the portable charger should keep running.

Instead of using the shore power you could just turn off the converter with the circuit breaker, which shares with the 120v receptacles and the 120v lights. Beware of wrong labels on the circuit breakers. Good idea to confirm each breaker one at a time for what it goes with.

Not all converters or battery charges are good battery chargers.

What brand and model is your charger?

Every RV has a battery charger. No battery etc exceptions.

Yes, there should be a built in battery charger. It's actually a "Converter", it converts 110v into 12V, and when you are plugged in, it runs your 12v appliances and charges the battery. To test whether it's working, you need to find it and check the input voltage and output voltage directly at its' terminals. It's probably located behind the electrical panel that has your 12V fuses in it.