. SMART CHARGER 2 is an electronic charger for charging 6 and 12 volt acid batteries:WET (liquid-acid)GEL (gel)MF (maintenance-free)AGM (with free-flowing electrolyte fiberglass mat, designed for motor vehicles (gasoline and diesel), motorcycles, motorboats, etc.)EFB (for vehicles with Start-Stop system)The rectifier has microprocessor control, provides automatic shutdown when the required voltage is reached on the battery, and automatic resumption of charging when the voltage on the battery drops.Length of power cable 180 cm, length of polar cables 180 cm.Cold battery charging function: optimizes charging at very low temperatures (low temperatures can adversely affect the chemical structure of the battery components).SMART CHARGER 2 is a battery charging rectifier device that meets the requirements of European standards for safety and electromagnetic compatibility. Its manufacturing process conforms to the ISO 9001 Quality System standard.. . . . Principle of operation of SMART CHARGER series inverter chargers :The chargers charge the battery to a threshold voltage of about 16V (safe for the battery and car installation ) , and then switch to a second voltage level of 14V (blue light on), recharges the battery and at the same time can keep it fully charged for a long time.If the battery has already reached 16V after charging for a while and causes the charger to go into the 14V charging/supporting state, it means that the battery is fully charged or damaged ( sulfated , bad electrolyte density , mechanical damage to the plates ).The correctness of the charger charging can be checked on your own using a voltmeter connected to the battery terminals during charging. . . . . . . Provides a range of safety features such as:short-circuit protection,reverse polarity connection protection,overheating protection,overcharging protection,overcharging protection,protectionagainst charging damaged or completely discharged batteries.BALANCES OF THE DEVICE Maintenance-free device Voltage 6/12V Cold battery charging function 2 A charge Automatically sets last stored parameters Automatically detects battery voltage Each time it is turned on, the charger automatically sets the last memorized parameters (helpful for repeated use and power outages). 9-step charging process Resume charging after voltage drop on battery LCD display Information about bad battery condition IP 44 protection. . . . . The Smart Charger 4 inverter charger , is designed to charge 6V-12V , open or closed type lead-acid batteries (such as WET - with liquid electrolyte, GEL - with gel electrolyte are now the most popular batteries, and AGM - with electrolyte-absorbing mat.)The 7-stage charging process ensures that optimal battery charging conditions are achieved. An automatic control system will adjust each of the 7 charging stages to properly charge the battery:ETAP 1 - Diagnostics - analyzes the battery and checks whether it can accept the charging current, prevents charging a damaged batteryETAP 2 - Pre-charging - low voltage batteries are pre-charged with a low current, this ensures longer battery lifeETAP 3 - Soft start - the charger gradually increases the charging current from reaching full charging currentETAP 4 - CC1, CC2, CC3 (Constant Current) - fast charging. The charging current is automatically set according to the state of charge of the batteryETAP 5 - CV (Constant Voltage - constant voltage charging) - charging up to 14.6V. Designed to charge batteries that are almost fully charged. It will terminate charging the battery when it reaches 14.6VETAP 6 - Resting - terminates the charging process when the battery is fully chargedETAP 7 - Restoring - automatically monitors the battery. The charging process will resume when the voltage on the battery drops below 12.8V (for 12V batteries). The charger will restart the charging process starting from Stage 1.When the battery is fully charged, the charger turns off the charging indicator light and the cooling fan. At this point, the battery is ready for use and can be installed in the vehicle.However, if you need to store the battery, you can not unplug it and turn off the charger. It will then operate in backup mode, keeping the battery at maximum charge throughout the storage period. . . . . LCD display of the charger, where:1 - slow charging (slow)2 - fast charging (fast)3 - winter mode4 - battery voltage; depending on the model, it can be 6V/12V 5 - charge level6 - power-on symbol7 - battery voltage value or error codes . . Set contents:Smart Charger 2 rectifierCables with handlesInstruction manualOriginal boxTechnical specifications:Power supply voltage: 230V; 50Hz (1ph)Protection rating: IP 44Weight: 0.45 kgSize dimensions L x W x H: 125x80x45 mmPackaging dimensions L x W x H: 95x80x235 mmCharging voltage: 6-12 voltsCharging current: up to 2 ampsNumbered Ah 15h battery capacity (min/max): 1.2 - 60 Ah . . .