Charging a LiFePO4 via an Inverter

[Sundancer2727]

Good day.
First post and I did a little searching first.......
I am looking to charge a 100AHr LiFePO4 via an Inverter and Battery Charger combo. I already have both.
My thinking is that the Inverter will isolate and handle the power for the Charger..
I know that this is kind of a 'Rube Goldberg' setup, but, as I said, I already have most of it and need to protect the Suzuki's Charging while charging the LiFePO4.. What am I missing?
Thanks for your thoughts.

 

[alldodge]

Welcome
Lets see if @tpenfield or @bruceb58 can advise

 

[boscoe99]

Should be no problem whatsoever.

What will be powering the inverter?

Not understanding protection of the Suzuki charging system being needed. Why?

 

[bruceb58]

As long as the inverter output is high enough for the max charge of the charger.

I would only use an inverter that was a pure sine wave inverter.

Do you have the specs for both the inverter and the charger?

Overloading your alternator would be the biggest concern.

Personally, A WAY better option is to use a DC to DC converter like the Victron 50A XS Orion

Victron ORI121217050 Orion XS 12/12-50 non-isolated DC-DC charger with EMC improvements

You can go into the settings via bluetooth to adjust the current. I would not draw more than half of your alternator's rated output.

 

[bruceb58]

Not understanding protection of the Suzuki charging system being needed. Why?

A LiFePO4 battery, depending on the battery, can absorb over 100A. No outboard alternator could source that much current without damage.

 

[boscoe99]

A LiFePO4 battery, depending on the battery, can absorb over 100A. No outboard alternator could source that much current without damage.

Mercury Marine has approved a number of models for use with lithium batteries.

Although not approved by Yamaha, Suzuki, Honda or Evinrude, a number of owners of those brands are using lithium batteries with no ill effects.