This is the ESU 54671 Power Pack Mini Energy Storage for LokPilot/LokSound Micro V4.0 and Select.

The ESU Power Pack can be optionally connected to all LokPilot, LokPilot micro, LokSound , LokSound micro V4. & V5 and LokSound V4.0 M4 decoders and supplies your locomotive reliably with power to get over dirty tracks and longer switch crossings.

Sound, light and motor functions are buffered and thus enable your model to run up to
2 Secs with $v & 8 Secs with V5 without power, depending on the model´s power consumption.

The Power Pack has an integrated charging current which is controlled by the decoder. Therefore it can remain within the loco while it gets programmed. The load current is however, limited to avoid an excessive load on your booster, for this case there would be, several models in operation.

The buffer time can be restricted by writing a CV on the decoder side to make red signals lead to an exact signal stop.

The size of the Power Pack is approx. 22 x 10 x 14 mm which has to be considered during the installation.

A 3-pin cable connection between the decoder and the Power Pack is essential.

Please note that the PowerPack is automatically disabled during conventional AC/DC operation. For technical reasons, buffering is not possible.