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CTEK® 56-191 UC 800 6V Battery Charger

Catalog #: 97004.1000
CTEK® Part #: 56-191
Charges and maintains 6V batteries.

The UC 800 is a the battery charger that gives your old car a new life. It is a complete 6V battery charger in a diminutive format that charges everything from small batteries of 1Ah up to the larger tractor batteries. Perfect for maintaining the often less used 6V vehicles.
  • Flexible care for

battery needs

All CTEK chargers are developed to take special
care of the batteries in the vehicle and at the same
time focus on the safety of the person and the vehicle. Depending on the weather conditions, usage and the type of battery dictate the care that the battery needs. CTEK chargers are developed to handle virtually all lead-acid batteries, weather
conditions and vehicle types. The importance of
battery charging is clear when the statistics show
that 70% of all battery returns are due to poorly
charged batteries. Save time, money and work by
charging batteries with a CTEK charger.

  • Fully-automatic – for

charging and maintenance

There is no need for any specific knowledge of batteries
or their charging methods; the UC 800 will
take care of it. The charger takes its own readings
and then begins to charge the battery. Once it is
finished charging, it will automatically switch to its
maintenance phase–CTEK’s patented pulse charging–
arguably the most caring mode for a battery
connected for a long time. The UC 800 can be
connected for months, which is especially important
for seasonal vehicles.

  • Patented desulfation


Unused batteries lose their power and their life is
shortened through sulfation. It is also more difficult
to charge sulfated batteries. The UC 800 has a patented
method for reconditioning sulfated batteries.
The charger analyzes the state of the battery and, if
possible, recovers the battery and its power.

  • Compatible with other electronic equipment

Most vehicles today are equipped with sensitive
electronic systems. Unlike less-sophisticated chargers,
there is no need to disconnect the battery;
the UC 800 is specially designed to not damage
electronic systems.

  • Made for all weather

conditions and situations

The UC 800 is prepared to charge and maintain,
no matter the weather, temperature or situation.
The UC 800 is very light and compact, but it is
extremely robust and water and dust resistant (IP65
classification). The UC 800 is certified for use between
–4ºF and +122ºF. In order to make things
easier and more convenient, the Comfort Connect
(eyelet terminals) can be permanently connected to
the vehicle’s battery.

  • Designed for safety

All CTEK models are designed to consider the
safety of the user. They are spark free, making the
connection much easier and safer considering the
gases batteries normally produce. The UC 800 is
also protected from reverse-polarity connections
and is short-circuit proof. A red light on the charger
will simply indicate that the charging cannot begin
until the user has connected the charger correctly.

Technical data – UC 800
Input voltage AC: 100–120VAC, 50–60Hz, output power is reduced at lower input voltage
Output voltage: Nominal: 6V
Efficiency: HIGH 85%
Charging voltage: 7.2V
Charging current: 0.8A max
Back current drain*: <1mAh
Ripple**: ∼2%
Ambient temperature: -4°F to +122°F, output power is reduced automatically at higher temperatures
Type of charger: 4 step, fully automatic switch mode with pulse maintenance
Type of batteries: 6V lead-acid batteries (Wet, MF, AGM and most GEL)
Battery capacity: 1.2–32Ah (charging) 1.2–100Ah (maintenance)
Dimensions (L x W x H): 5½x2x1½ inches
Insulation class: IP65 (splash and dust proof)
Weight: 0.7lbs

*) Back current drain is what drains the battery if the charger is connected without the power cord connected.
**) Ripple describes the quality of the current and voltage. A high current ripple heats the battery and shortens its life. A linear charger has a current ripple of
70–400% which is much larger than the maximum 5% for a modern sealed battery. High voltage ripple could harm other equipment that is connected to the battery.
UC 800 delivers voltage and current with very low ripple. The battery has a long service life and there is no risk of damage to other electronic devices connected to
the battery

Installation Notes
Installation Difficulty:
Level 1Beginner
Installation Time: Less than an hour
Parts Included

Comfort Connect w/ Eyelets
Comfort Connect w/ Clamps

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