CTEK Comfort Indicator Cig Plug 56-870 — 12V cigarette adapter with battery state indicator, compact durable

The CTEK Comfort Indicator Cig Plug is a compact 12V adapter that lets you charge compatible CTEK chargers through a vehicle cigarette/socket while showing the battery's remaining power at a glance.

This accessory converts your vehicle's live 12-volt socket into a convenient charging connection for selected CTEK chargers and adds a built-in comfort indicator that reports battery state. Designed from durable materials and sized to stow in a glove box or center console, it extends the usability of portable chargers when the battery needs topping up without direct terminal access.

How does the Comfort Indicator Cig Plug tell me the battery condition?

The built-in comfort indicator uses simple visual cues to show how much charge the battery retains, making it easy to decide whether charging is needed. It’s not a replacement for a full diagnostic test but provides a quick, on-the-spot status readout.

• Visual indicator displays approximate remaining battery power
• Instant feedback before starting a longer charging session
• Useful when assessing whether to use a full charger or a top-up

Which chargers and vehicles work with this cigarette plug?

The 56-870 is compatible with a range of CTEK chargers, allowing them to charge through a vehicle’s 12V socket rather than directly at the battery. Make sure the vehicle’s accessory socket stays live when the ignition is off; otherwise charging will not occur.

• Compatible with CTEK US 0.8, MUS 3300, MUS 4.3, 4.3 Test & Charge, 4.3 Polar
• Also fits MXS 5.0, CT5 Time To Go and MUS 7002 chargers
• Vehicle socket must remain powered when ignition is off to enable charging

Is this plug durable and easy to store?

Yes — the cig plug is built from quality materials designed for regular use, and its compact form factor makes it straightforward to store in the vehicle. The construction focuses on longevity and reliable electrical contact.

• Compact design fits glove box or center console
• Robust materials for everyday automotive environments
• Simple connector shape for quick plug-in use

What should I know before using the adapter in my car?

Confirm that your car’s 12V socket remains powered when the ignition is turned off, and verify charger compatibility with the listed CTEK models. International product variants may differ in labeling or instructions, so check local specifications if purchased from abroad.

• Socket must be live with ignition off for charging to work
• Check charger model compatibility before purchase
• International versions may vary in packaging or documentation

Who is this for? The CTEK Comfort Indicator Cig Plug (56-870) suits vehicle owners and technicians who need a quick, portable way to monitor battery condition and charge using compatible CTEK chargers without accessing battery terminals. It’s ideal for drivers who store chargers in the vehicle, mobile service providers who need compact accessories, and anyone who prefers a simple indicator for battery readiness before longer trips.