The Güde GAB 12V-15A-BOOST automatic battery charger features inverter technology and microprocessor control, compatible with all major 12 V vehicle battery types (PB, GEL, AGM, WET, EFB). The charging process runs in 6 automatic stages with automatic shut-off, switchover to maintenance mode and temperature control. The BOOST function delivers 15 A for 300 seconds as a starting aid. Features an integrated 12 V cigarette lighter socket, LED display, fully insulated clamps and protection against reverse polarity and short circuit. Mains power 320 W, weight 1.5 kg. Note: the device has no internal battery — mains connection is required for operation. Made in Germany by Güde, founded 1948. Distributed in Italy by Krollit, official Güde distributor since 2007.
- Output voltage: 12 V
- Charging current: 2 / 6 / 10 / 15 A
- Battery capacity: 2–400 Ah
- BOOST function: 15 A for 300 seconds
- Cigarette lighter socket: integrated 12 V
- Mains voltage: 230 V / 50 Hz
- Mains power: 320 W
- Charging stages: 6 automatic
- Automatic shut-off and switchover to maintenance mode at end of charge
- Temperature control during charging
- Protections: reverse polarity, short circuit
- Display: LED
- Clamps: fully insulated
- Battery types: PB (lead-acid), GEL, AGM (Start&Stop), WET, EFB
- Dimensions: 218 × 147 × 222 mm
- Net weight: 1.5 kg
- Note: no internal battery — mains connection required for operation
Who uses the GAB 12V-15A-BOOST and for what
The GAB 12V-15A-BOOST is used by motorists, motorcyclists and automotive professionals who need a compact charger with a higher BOOST current than the GAB 12V/6V-10A-BOOST model. With 15 A in BOOST mode and capacity up to 400 Ah, it covers cars, SUVs and light commercial vehicles. The integrated 12 V cigarette lighter socket allows direct charging through the vehicle's electrical system without opening the bonnet. The 1.5 kg weight and 218 × 147 × 222 mm dimensions make it compact and easily portable.
Logistics and Krollit support
Shipping 5–9 working days (7 days for southern Italian regions). Italian-language technical support available throughout the product's lifetime. Original Güde spare parts available from Krollit stock, Monteforte Irpino (AV).
Who it is for
| Profile | Compatibility | Reason |
|---|
| Motorist with a 12 V car, SUV or light commercial vehicle with battery up to 400 Ah | Suitable | Capacity up to 400 Ah and 15 A BOOST current cover SUV and light commercial vehicle batteries with better starting assistance than the 10A model |
| User who needs to charge via cigarette lighter socket without opening the bonnet | Suitable | The integrated 12 V cigarette lighter socket allows direct charging through the vehicle's electrical system; feature not available on the GAB 12V/6V-10A-BOOST model |
| Owner of classic vehicles or motorcycles with 6 V batteries | Not suitable | The GAB 12V-15A-BOOST handles only 12 V; for 6 V batteries the GAB 12V/6V-10A-BOOST model is recommended |
Not suitable for: 6 V batteries (the GAB 12V/6V-10A-BOOST model is recommended); batteries over 400 Ah; and for those seeking a professional 200–250 A emergency jump-start, as the BOOST function delivers only 15 A for 300 seconds.
Technical specifications
| Mains voltage | 230 V / 50 Hz |
| Mains power | 320 W |
| Output voltage | 12 V |
| Charging current | 2 / 6 / 10 / 15 A |
| Battery capacity | 2–400 Ah |
| BOOST function | 15 A for 300 seconds |
| Cigarette lighter socket | Integrated 12 V |
| Charging stages | 6 automatic |
| Automatic shut-off | Yes, with switchover to maintenance mode |
| Temperature control | Yes, during charging |
| Protections | Reverse polarity, short circuit |
| Display | LED |
| Clamps | Fully insulated |
| Battery types | PB (lead-acid), GEL, AGM (Start&Stop), WET, EFB |
| Technology | Inverter with microprocessor control |
| Internal battery | No — mains connection required |
| Length | 218 mm |
| Width | 147 mm |
| Height | 222 mm |
| Net weight | 1.5 kg |
| Shipping weight | 1.75 kg |
| GTIN | 4015671810717 |
| Güde article code | 85143 |
| Compliance | CE |
GAB 12V-15A-BOOST vs GAB 12V/6V-10A-BOOST comparison
| Parameter | GAB 12V-15A-BOOST | GAB 12V/6V-10A-BOOST | When to choose the 15A |
|---|
| Voltage | 12 V | 6 V / 12 V | 12 V only; choose 10A if you also need 6 V |
| BOOST current | 15 A for 300 s | 10 A for 300 s | More effective starting assistance |
| Max capacity 12 V | 400 Ah | 300 Ah | SUVs and light commercial vehicles |
| Mains power | 320 W | 250 W | Faster charging on larger batteries |
| Cigarette lighter socket | Yes (integrated 12 V) | No | Charging without opening the bonnet |
| Net weight | 1.5 kg | 1.23 kg | Both compact and portable |
Original Güde spare parts
| Code | Description | Price incl. VAT |
|---|
| 85143-01001 | Battery clamps – set of 2 | €10.89 |
| 85143-01002 | Fan | €12.00 |
Frequently asked questions
What is the difference between the GAB 12V-15A-BOOST and the GAB 12V/6V-10A-BOOST?
The GAB 12V-15A-BOOST handles only 12 V (not 6 V), has a BOOST current of 15 A instead of 10 A, capacity up to 400 Ah instead of 300 Ah, mains power of 320 W instead of 250 W and includes an integrated 12 V cigarette lighter socket. The 10A model is recommended for those who also own classic vehicles or motorcycles with 6 V batteries; the 15A model is recommended for modern 12 V cars and SUVs with large-capacity batteries.
What is the BOOST function and how is it used?
The BOOST function delivers 15 A for 300 seconds to provide temporary starting assistance on partially discharged batteries. It is not a professional 200–250 A emergency jump-start like the GDB models: it charges the battery for 5 minutes to provide enough energy to start the engine. Not suitable for completely flat batteries or large-displacement engines.
What is the integrated 12 V cigarette lighter socket for?
It allows battery charging via the car's cigarette lighter connector without opening the bonnet and connecting clamps directly to the battery terminals. Useful for slow maintenance charging on vehicles parked in tight spaces. The BOOST function is not available via the cigarette lighter socket.
Is the GAB 12V-15A-BOOST compatible with AGM batteries in Start&Stop vehicles?
Yes. Güde explicitly declares compatibility with AGM batteries for automatic Start&Stop systems. The battery type is selected via the control panel before starting the charge cycle. Capacity up to 400 Ah covers all standard AGM batteries including those of SUVs and light commercial vehicles.
Can the GAB 12V-15A-BOOST be left connected long-term?
Yes. Once charging is complete, the device automatically switches off the charging current and moves to maintenance mode, allowing permanent connection without risk of overcharge. Useful for vehicles stored for extended periods or for winter battery maintenance.
What warranty does Krollit offer on the GAB 12V-15A-BOOST?
The Güde GAB 12V-15A-BOOST is covered by the official Güde 24-month warranty. Krollit provides Italian-language technical support throughout the product's lifetime and holds original Güde spare parts in stock. To open a support request contact +39 0825-1494022.
