This is a capacitor bank plain and simple. A capacitor acts as a battery. When there is a current break it will supply power for a limited time (depending on the amount of capacitance). I have several of these in different locomotives. Luckily, all of them were placed in locomotives that have either the PNP Econami or Tsunami2 decoders in them (they have a built-in plug). I removed the current keeper from its package, plugged it in, done, and all the hesitation problems with the locomotives disappeared, that simple!! If you want to put one of these in a locomotive that is not equipped with the necessary plug there is a small amount of additional work involved (instructions included), nothing difficult at all (as long as the decoder is a Tsunami!!). I say this because the instructions are specific to Tsunami decoders. I know for a fact that some decoder manufacturers give instructions on installing a current keeper on their boards (TCS comes immediately to mind but it may be their current keeper, sorry don't remember). If your board is not Tsunami RESEARCH FIRST!!Read full review
Verified purchase: Yes | Condition: New
Great product to prevent power glitches on dirty track or through crossovers or switches. Smaller size fits inside locomotives that may not have room for the original Current Keeper. I installed this new CKII unit in an Athearn Genesis ES44DC in place of the cab interior which was a good tradeoff. This locomotive has the O.E. Tsunami2 decoder which came factory equipped with the proper receptacle allowing the Current Keeper to be a plug-and-play installation.
Verified purchase: Yes | Condition: New
It is easy to install, comes with diagrams for different decoders. Works well, would recommend for anyone who has trouble with there Locomotive making across turnouts or has dirty track in spots.
Verified purchase: Yes | Condition: New
The Currentkeeper makes up for minor problems that make especially older tracks very DCC unfriendly. An older loco on my layout that would stop or hesitate on places that might have a break in the current now runs great thanks to the Currentkeeper and its array of capacitors. Great product.
Verified purchase: Yes | Condition: New
If you are into Soundtraxx decoders with sound and you want reliable, rock solid performance add this CurrentKeeper to your Econami or Tsunami. If you have dirty track, spotty power or isolated frogs add this device.
Verified purchase: Yes | Condition: New
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