Battery charger BENTON ECO4 4 A. 12V
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BENTON ECO4 12V 4A – Automatic Battery Charger and Maintainer
Intelligent 5-step charging, battery diagnostics and reliable long-term charge maintenance in one compact device.
BENTON ECO4 (ECO 4.0) is a fully automatic 12V battery charger and maintainer with a maximum charging current of 4A. Designed for lead-acid batteries with capacities from 4 to 120Ah, it supports WET, MF, AGM and GEL battery technologies. Its intelligent microprocessor-controlled system automatically adjusts the charging process according to battery condition, helps recover certain deeply discharged batteries and maintains an optimal charge during extended storage.
12VBattery Voltage4ACharging Current4–120Battery Capacity, Ah5Automatic Charging StagesKey Features and Benefits
- Fully automatic charging – intelligent microprocessor control monitors battery condition and adjusts charging without manual mode selection.
- Advanced 5-step technology – combines diagnostics, battery recovery, bulk charging, absorption and automatic maintenance.
- Wide battery compatibility – suitable for 12V WET, MF, AGM and GEL lead-acid batteries.
- Battery recovery function – a special diagnostic and pulse charging process may help recover certain deeply discharged or slightly sulphated batteries.
- Automatic battery maintenance – helps preserve battery charge when a vehicle is stored or used infrequently.
- Reverse polarity protection – protects against incorrect battery terminal connections.
- Short-circuit and overheating protection – provides an additional level of operational safety.
- LED charge indicators – clearly display charging progress and error conditions.
- Two convenient connection options – includes battery clamps and eyelet terminal connections for regular or permanent installation.
Intelligent 5-Step Charging Process
1. Diagnosis and Recovery – checks battery voltage and initiates controlled recovery charging when necessary.
2. Bulk Charging – restores battery capacity by automatically adjusting the charging current.
3. Absorption Charging – progressively reduces current to help bring the battery to a full charge.
4. Trickle Charging – supplies a low charging current after the battery reaches full charge.
5. Maintenance Charging – continuously monitors battery voltage and automatically resumes charging when required.
Technical Specifications
Manufacturer BENTON Model ECO 4.0 / ECO4 Input Voltage 220–240V AC, 50/60Hz Nominal Battery Voltage 12V DC Maximum Charging Current 4A (±10%) Charging Voltage 14.7V (±0.25V) Supported Battery Capacity 4–120Ah Battery Types WET, MF, AGM, GEL (Lead-Acid) Charging Technology 5-Step Automatic Charging Protection Rating IP52 – Indoor Use Operating Temperature −20°C to +40°C Dimensions 214 × 60 × 51 mm Weight Approx. 0.46 kg Product Code CIT1703ECO4 / 1703-ECO4 Applications and Compatibility
BENTON ECO4 is suitable for 12V lead-acid batteries used in passenger cars, motorcycles, ATVs, boats, snowmobiles and other seasonal vehicles, with battery capacities ranging from 4 to 120Ah.
Particularly useful for vehicles that remain unused for extended periods, its automatic maintenance function helps keep the battery charged and ready for future use. Ideal for both regular charging and long-term battery care in a garage or suitable indoor environment.
Package Contents
- BENTON ECO4 automatic battery charger.
- Battery connection cables with crocodile clamps.
- Connection cables with 6.3 mm eyelet terminals.
- User manual.
Instructions for Use
- Place the charger in a dry, well-ventilated location.
- Make sure the charger is disconnected from the mains before attaching battery connections.
- Connect the red lead to the positive (+) terminal and the black lead to the negative (−) terminal. For vehicle-installed batteries, follow the manufacturer's specified connection procedure.
- Connect the charger to a 220–240V AC power outlet.
- The charger automatically starts battery diagnosis and selects the appropriate charging process.
- After charging is completed, the device automatically switches to maintenance charging.
- To disconnect, remove the mains plug first, then disconnect the battery leads.
Important Safety InformationThis charger is designed exclusively for rechargeable 12V lead-acid batteries. Do not use it for 6V, 24V or lithium batteries. Never charge frozen or damaged batteries. Charging must take place in a well-ventilated environment protected from weather. Always follow the manufacturer's safety instructions.
Frequently Asked Questions
Can BENTON ECO4 charge a 60Ah or 100Ah car battery?
Yes. It supports 12V lead-acid batteries from 4 to 120Ah. Larger batteries will require more charging time with a maximum charging current of 4A.
Is the charger suitable for AGM and GEL batteries?
Yes. The charger supports WET, MF, AGM and GEL lead-acid battery technologies.
Can I leave the charger connected for long periods?
Yes. The automatic battery maintenance function is designed for long-term charging support. Before leaving it unattended for extended periods, ensure the charger has entered maintenance mode and follow the user manual.
Can the ECO4 recover a deeply discharged battery?
It can initiate recovery charging for certain deeply discharged batteries at approximately 3V or above. Successful recovery depends on the battery's actual condition and is not guaranteed.
Note: BENTON ECO4 is a battery charger and maintainer, not an engine jump starter. Always verify battery voltage, chemistry and capacity before use.


