. SMART CHARGER 15 is an electronic charger for charging 12 and 24 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, motor boats, 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 battery components).SMART CHARGER 15 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 12/24 volts Cold battery charging function Charging 15 A 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 65 protection . . . . . The Smart Charger 15 inverter charger , is designed to charge 12/24 volt , lead-acid batteries of open or closed type (such as WET batteries - with electrolyte in liquid form, GEL - with electrolyte in gel form are now the most popular batteries, and AGM - with electrolyte absorbing mat.)9-stage charging process ensures that optimal battery charging conditions are achieved. An automatic control system will adjust each of the 9 charging stages to properly charge the battery:ETAP 1 - Diagnostic) - analyzes the battery and checks if it can accept the charging current; prevents charging a damaged batteryETAP 2 - Recovery charge (Pre-charging) - batteries with low voltage are pre-charged with a low current, but with increased voltage; highly discharged batteries can be restored to a usable state and this ensures a longer battery life; the step is skipped if the battery is minimally discharged and in good condition.ETAP 3 - Soft start) - the charger gradually increases the charging current until the preset charging current is reachedETAP 4 - Pulse charge) - the battery is charged with pulse current (pulse fluctuation takes place in the DC current range)ETAP 5 -. Reconditioning - preparatory stage for charging in the bulk charge stageETAP 6 - Bulk charge - charging with a constant current up to a pre-set voltage (14.4÷14.7V)ETAP 7 - Absorption charge - when the required battery charge is reached, a change to constant voltage (CV) charging will take place and the charging process will endETAP 8 - Evaluation diagnostic - automatic monitoring of the battery voltage after charging is completedETAP 9 - Maintenance charge - a stage that maintains the battery (float) and monitors its condition; resumes charging with reduced current if necessary.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 12V/24V 5 - charge level6 - plug-in symbol7 - battery voltage value or error codes . . Kit contents:Smart Charger 15 rectifierCables with handlesInstruction manualOriginal boxTechnical specifications:Power supply voltage: 220÷240V, 50HzProtection rating: IP20Weight: 0.95 kgSize dimensions L x W x H: 115x200x60 mmPackaging dimensions L x W x H: 120x100x240 mmCharging voltage: 12V / 24VCharging current: 8A (12/24V) / 15A (12/24V)Name battery capacity Ah 15h (min/max): 1.2-350Ah . .