Inverter chargers are combination devices that provide the function of an inverter (direct current to alternating current) and a converter (charge the batteries) along with other functions. They are especially useful in campers and other vehicles that are connected to shore power regularly and run heavy AC loads like air conditioners.
Inverter charges provide several functions:
- invert 12v battery power to 120vac
- pass-through shore power when available, with auto-switching
- some can bond shore and battery power to support heavy 120vac loads
- charge battery banks like a converter
- some also handle solar charging
They tend to be expensive, some over $1000.
Note: the Victron Multiplus line has outputs for maintaining the starter battery:
“ The main DC terminal can supply the full output current. The second output, intended for charging starter battery, is limited to 4A and has a slightly lower output voltage.[1] ”