5V vs 3V

Bill,

All PS1 engines are 5V. And need a 9V BCR. 

Yes.

No PS2 5V engines have a little white charging port

Yes. PS2 5 volt engines either have a round, black battery charging port or no battery charging port at all.

All PS2 3V engine do have the little white charging port

Yes. All 3 volt PS2 engines have a rectangular 2-pin battery charging port.

All PS3 engines don't need batteries.

Correct.

 (Is there a quick way to identify a PS3 engine not in its box?)

There should be a sticker on the bottom of the engine or tender that states "Protosound 3".

PS-1 are not really 5V, but they do take a 9V BCR.  G

If you are not sure if you have a 5V or 3V, look at the charging jack.  The 5V is round (black) and the 3V (white) has two pins.  If you do not have the engines in front of you, hit the sound file to download and counting left to right, the number 7 position will say 3 if it is a 3V file.  That holds for almost all 3V engines.  

Marty,

If you are not sure if you have a 5V or 3V, look at the charging jack.  The 5V is round (black) and the 3V (white) has two pins

Is there an echo in here?

Thanks All!

Very helpful!

And if you have no jack, open up the engine and check what the battery is.  I bought a used 2002 loco without a jack, assuming iot to be a 5-volt but williing to accept the risk.  To my surprise, when I opened it to check the battery's vintage, I found that it had been upgraded to a 3-volt board.  So if you have no port, before ordering a new battery check the innards.

Barry, sorry.  That is what I get for not reading everything.

Marty,

LOL!

Gentlemen,

    Double great advise, I love it!

PCRR/Dave