Modern, microprocessor-controlled automatic charger is a versatile device designed for charging and maintaining 12V batteries.
Equipped with an intelligent control system and a 9-stage charging process, it provides maximum efficiency and user safety.
It supports a wide range of battery types – from classic lead-acid to modern lithium iron phosphate (LiFePO4).

With automatic temperature detection (winter/summer mode) and a last-mode memory function, the GEKO G80056 charger is exceptionally convenient and intuitive to use.

Operating modes

Charging modes are selected manually using the MODE button (except for winter and summer modes, which start automatically).

Car mode

Suitable for most 12V lead-acid batteries used in passenger cars, agricultural vehicles and trucks.
Supports types WET (wet), MF (maintenance-free) and Ca/Ca (calcium).

Start-Stop / AGM / GEL mode

Dedicated to 12V batteries used in vehicles equipped with a Start-Stop system and to AGM and GEL batteries.
It optimizes the charging process, protecting cells from overcharging and overheating.

Motorcycle mode

Intended for all types of 12V lead-acid batteries used in motorcycles, scooters and smaller vehicles.
Provides gentle and precise charging for batteries with smaller capacity.

Lithium Iron (LiFePO4) mode

Mode dedicated to charging lithium iron phosphate (LiFePO4) batteries with a charging voltage of 14.6V.
Provides a stable and safe charging profile for lithium cells.

WARNING: The LiFePO4 mode should be used only for batteries of this type.

Repair mode (regeneration)

Special Pulse Repair mode designed to regenerate 12V lead-acid batteries (WET, GEL, AGM) that:
– have been unused for a long time,
– are deeply discharged,
– or show signs of sulfation.
This mode uses pulse charging technology to improve capacity and extend battery life.

The repair mode does not have a memory function and must be activated manually.

Winter / Summer mode (automatic)

The charger automatically detects the ambient temperature and adjusts the charging voltage:

• Winter mode activates below -10°C – increases the voltage for better charging efficiency at low temperatures.

• Summer mode activates above 28°C – lowers the voltage to prevent overcharging the battery at high temperatures.

9-stage charging – maximum effectiveness and protection

The charger uses an advanced nine-stage charging process that ensures longer battery life and complete safety:

1. Battery detection
2. Desulfation (pulse desulfation)
3. Constant current charging (half power)
4. Constant current charging (full power)
5. Constant voltage charging
6. Regeneration / repair
7. Float charging (maintenance)
8. Capacity maintenance (monitoring)
9. Automatic charge termination

As a result, the battery is not only charged but also protected against overcharging, overheating and cell damage.

Memory function

After charging is complete, the charger automatically remembers the last used operating mode and will return to the same settings at the next start.
This significantly increases user convenience – just connect the device and the charger will select the previous charging parameters.

The repair mode is not covered by the memory function.

Mechanism to prevent accidental mode switching

After charging starts (after approximately 25 seconds) the device locks the MODE button, preventing accidental mode switching during operation.
To change the mode, disconnect one of the clamps or the mains power – this protects the battery from user errors and cell damage.

Protections and intelligent functions

• Reverse polarity protection

• Short-circuit and overheating protection

• Overload protection

• Automatic detection of battery type and charge status

• Standby mode after charging (voltage maintenance)

• Backlit LCD displaying current voltage, current and mode

Technical specification

Power supply: 230V AC

Output voltage: 12V DC

Maximum charging current: 8A DC

Peak power (power consumption): 120W AC

Supported batteries: 12V, 2Ah – 180Ah

Battery types: WET, MF, Ca/Ca, GEL, AGM, LiFePO4

Operating temperature range: –20°C to +45°C

Power cable length: 150 cm

Output cable length: 64 cm

Protections: Reverse polarity, short circuit, overheating, overload

Special functions: Repair function, mode memory, automatic Winter/Summer mode, MODE button lock