when my MacBook Pro is off it charge to orange

I received this system from a customer. It seems that it’s OK (except its really slow).

I tried SMC to check if it would charge when its on, but doesn’t work but, when its off the mac, the LED goes Amber right now, it’s been like 10 minutes since I shut it down, I’m gonna wait if it goes beyond the 2%

What software recommend to check the health of the battery, according to the system report it says "its fine"

So I replaced the battery with another MacBook that I have and I notice it’s not charging either, it says that the battery is not charging, is depending on the charger? Also I tried with the other charger and it says the same message, and I realized that the other system is working fine with this battery, I can’t say it needs a battery if I can’t charge the battery.

Update while writing,

I downloaded TG Pro and the systems readings are OK.

The only thing that I have to check is the MagSafe port if I have to replace it.