Fitted new battery still says voltage is low - Dell OptiPlex SX270 PC Desktop

Error Code P1633 means the PCM (powertrain control module, also known as ECM or engine control module in other vehicle makes) has detected a low voltage on the Keep Alive memory circuit. ... If the battery is disconnected, or the voltage drops below 10.5V, the error code will be set.

P0740 torque converter malfunction
Possible causes
Low or dirty transmission fluid
Faulty torque converter clutch solenoid valve
Torque converter clutch solenoid valve harness is open or shorted
Torque converter clutch solenoid valve circuit poor electrical connection

P0562 charging system voltage low
Possible causes
Low battery charge
Defective battery
Faulty alternator
Problem with belt
Open or shorted system voltage circuit

It's difficult to tell what's going on from your question, your old battery appeared to have failed, so you replaced it? Did you check voltage while it was running? It should be more than 13 VDC, otherwise the battery will discharge, but it's not the fault of the battery, that would indicate a problem with the alternator and/or voltage regulator. There are 3 important voltage readings: running (13+), not running (12+) and while cranking (9+).

Are you saying that after replacing the battery everything is dead? I would check the battery cables and terminals, make sure the wire hasn't been stressed or compromised, and that the connectors are shiny-clean. (You can but a terminal cleaner, with wire brushes to clean the fittings both inside and out, for a few dollars.)

Also, it's uncommon, but there's no law that says a brand new battery can't be dead.

Probably a faulty voltage regulator.

Check alternator and voltage regulator there.

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Check alternator and voltage regulator there.

Make sure battery is up at least 11 - 11.5 volts
A low battery will spin over and sound like it should when cranking sometimes, but the starter will rob spark from the ignition and not fire due to low voltage

Hi,Not nessarly shot.The stat uses low voltage from the equpitmemt also.You neea a volt meter to check.Remove stat from mounting plate.Check power at terminals RH&W or at RC&G they should read 24volt.If not check emergency switch off or fuse/breaker.

Try cleaning the battery contacts in the camera with a cotton swab lightly moistened with rubbing alcohol.

Check your stator and voltage regulator for proper output. Sounds like the battery isn't receiving a charge through the system. You can charge the battery with a trickle charger to verify the battery will take a charge outside the bikes charging system.