TCS 2006 | KA5-P Keep Alive Capacitor with Harness | DCC Accessory

The TCS 2006 KA5-P is a Keep-Alive® energy storage device designed to supply continuous power to your DCC decoder when a locomotive hits dirty track, a frog, or any other spot where electrical pickup falters. The KA5 packs five supercapacitors for higher storage capacity and peak voltage than a KA3 or KA4, keeping your loco moving and headlights lit for roughly 6–20 seconds of power interruption. The "-P" version ships pre-wired with a 2-pin JST plug and matching socket, making it a drop-in upgrade for compatible TCS decoders without any soldering. Shop more DCC Accessories and Train Control Systems products. Features Five supercapacitors for maximum storage capacity and peak charging voltage Pre-wired with a 2-pin JST plug and mating socket — no soldering required Keeps DCC locos running 6–20 seconds through dead spots and dirty track Keeps headlights, sound, and motor alive during power interruptions Works with any TCS decoder equipped with a Keep-Alive socket (and most other manufacturers' decoders with appropriate wiring) Compact form factor fits most HO scale locomotives; can also be used in larger scales More Information Brand Train Control Systems (TCS) Item Number 2006 (KA5-P) Product Type DCC Keep-Alive Capacitor Connector 2-pin JST plug with matching socket (pre-wired) Capacitor Count 5 supercapacitors Run-On Time Approx. 6–20 seconds for an HO-scale locomotive Scale Compatibility Any scale with a compatible DCC decoder Condition New FAQ What does a Keep-Alive actually do? It stores electrical energy in supercapacitors and releases it to your decoder whenever track power drops out, keeping the loco moving, lights on, and sound playing through short interruptions. How is the KA5 different from the KA3 or KA4? The KA5 adds a fifth supercapacitor, giving it higher peak voltage and longer run-on time than the older three- and four-cap versions. Do I need to solder this? No. The -P version comes pre-wired with a 2-pin JST plug and socket. Plug it into a compatible TCS decoder and you're done. Will it fit in my locomotive? The KA5 is a compact rectangular board designed to fit most HO locomotives. For tighter installations, consider one of TCS's smaller Keep-Alive models.