battery charging> which is best

Between the converter and battery charger(s) there is also the question of what volt-amps (watts, sort of) the generator can supply.

If lots, then you can have more charger(s) amps than the converter's amps. Unless you have a 100 or so amp charger that is PF corrected and your charger(s) are not PF corrected and perhaps total less amps anyway.

Then there is the voltage limit of the converter and the charger(s) to compare, despite the amps "size" to compare, where 14.x beats 13.x in volts for what amps you get.

Also a slight matter of DC set-ups /connections/wire gauges/ length of wires to compare and their levels of 120v AC inputs wrt actual 120v. Is one on a long extension cord for 120 and another on a short one? Is one on a Honda generator at 125V?

Must be something else... :)

Hi,

The fastest would be a combo of the converter and a battery charger.

Or you could do an "end run" and get a decent solar system in which case often folks find their generator use drops to zero.

As the others mentioned there are too many variables on the chargers but most converters will charge faster than most off the shelf battery chargers.

The 7in would be slow, thou maybe faster than some off the shelf battery chargers.

I can get up to 55A from my converter, 15A from my truck, 10A from my automotive battery charger, and 8A from the accessory charger on my Honda 2000.

Those are all max charge rates.

What ever charger, if when dry camping, will give you 14.8V at the terminals for flooded lead acid batteries, for an hour or two, when you need it most.

In consideration of best & convenience to worst.

1 - Depends upon your converter. Does it have 3-4 stage charging ?
2 - You didn't mention this one. Use a portable "smart" battery charger connected
to the generator.
3 - Connect to the battery charging system of the generator
4 - Use the 7-pin from the TV

a is best if you have a good converter.

Slowest is the 7-pin. It depends on the rig's converter whether it or the other charger would do better when powered by the generator.

So you need to specify what your converter is and what charger you are thinking of.