Can I charge battery without PCU

[SquadX]

I had my AEM unit sent off for repairs. Question is, can I hook a battery tender up without the AEM unit in the car?

 

[SquadX]

Any one know if this is possible?

 

[Viper Parts of America]

The battery can be charged in or out of the car with a battery tender and the PCM should not affect it.