User manual GRAUPNER LI-PO CHARGER 4

[. . . ] lithium-Polymer cells are very sensitive. For this reason they should only ever be charged in conditions when the entire charging process can be supervised constantly. warnings and safety notes · Protect the charger from dust, damp, rain, heat (e. It should only be operated in dry indoor conditi ons. [. . . ] The outstanding feature of Lithium batteries compared to other battery types is their much higher capacity. However, this important advantage is balanced by increased risks, and it is necessary to adopt different charging and discharging methods in order to reduce the risk to a minimum. it is essential to observe the basic instructions provided here at all times. Please be sure also to read the information and safety notes provided by the battery manufacturer, and keep within the stated technical limits. The basic rule is that Lithium-based batteries can ONLY be charged using special battery chargers designed and adjusted to suit the specific battery type (final charge voltage and capacity). In contrast to NiCd and NiMH batteries, Lithium batteries have to be charged using what is known as a constant current / constant voltage method. the charge current required is determined by the battery capacity , and the charger detects and sets this automatically. Lithium batteries are usually charged at a charge current of 1 - 2 C, where a charge current of 1 C corresponds to the cell capacity. This makes it unnecessary to set the charge rate, and the charger therefore features no such means of adjustment. Once the specific final charge voltage for the particular battery type is reached, the charger automatically reduces the current in order to prevent the final charge voltage exceeding the permissible maximum value. Liability Exclusion As manufacturers, we at GRAUPNER are not in a position to ensure that you observe the correct methods of operation when installing, using and maintaining this charger. For this reason we are obliged to deny all liability for loss, damage or costs which are incurred due to the incompetent or incorrect use and operation of our products, or which are connected with such operation in any way. Using the charger for the first time Using the charger for the first time Connect your Li-Po Charger 4 to a 12 V power source of adequate capacity. The ideal power source is a 12 V car battery or other suitable lead-acid battery (Order No. Alternatively a stabilised mains PSU with a rated output of 12 - 14 V and at least 5 A can be used, e. Stand-by mode When you connect the Li-Po Charger 4 to the power source, the blue LED starts flashing at three-second intervals. Caution: if you press the START/STOP button while the charger is in charge mode, battery charged mode or error mode, the Li-Po Charger 4 reverts to Stand-by mode. charge mode Now connect a suitable genuine GRAUPNER Lithium-Polymer battery pack to the output of the Li-Po Charger 4. The pack must consist of no more than four cells If you are charging a Lithium-Polymer pack consisting of one to three cells, press the START/STOP button briefly after connecting the 8 Using the charger for the first time You will hear a loud audible signal to confirm that the button was pressed, and the blue LED (for 1 - 3 cells) lights up; it continues to glow during the charge process. If you are charging a Lithium-Polymer pack consisting of four cells, hold the START/STOP button pressed in for about two seconds after connecting the battery to the charger. You will hear two short audible signals to confirm this. The red LED (for 4 cells) lights up; it continues to glow during the charge process. [. . . ] Using the charger for the first time 9 LED 1x 2x 3x 4x 5x 6x Error Input voltage below 10. 5 V or above 15 V Battery connected to charge output with reversed polarity No battery connected to charge output Incorrect cell count selected Incorrect battery type connected (eg. If the charger does not work at all when connected correctly to a suitable power source, and fails to produce any audible or visual indicators, remember to check the fuse (7. 3 A Blue and red LEDs Reversed polarity protection (input / output) Incorrect cell count Voltage error Circuit break (fuse) Crocodile clips Graupner BEC plug app. [. . . ]