User manual GRAUPNER SWITCHING POWER SUPPLY 5-15V 0-40A

[. . . ] Switch the power supply "ON" with the switch on the front of the unit. Do ensure correct polarity when connecting device to the power supply. As damage to this device may occur if in correct connections are made. Do not attempt use with device requiring greater current than Rated 40 amps. [. . . ] Never leave the charger running or connected to the car battery unsupervised. The following types of battery must not be connected to the charger: · Ni-Cd / Ni-MH batteries, lead-acid batteries with a nominal voltage of more than 12V or less than 6V, Lithium-Ion / Li-Mn / Lithium-Polymer / LiFePO4 (LiFe) batteries with less than 2 cells and more than 3 cells (4 cells for LiFePO4). Batteries which require a different charge method from CC/CV or lead-acid types. Batteries consisting of old and new cells, or cells of different makes. Batteries which are not expressly stated by the manufacturer to be suitable for the currents which this unit delivers during the charge process. Packs which are already fully charged or hot, or only partially discharged. Batteries installed in a device, or which are electrically connected to other components. To avoid short-circuits between the banana plugs fitted to the charge leads, please always connect the charge leads to the charger first, and only then to the battery to be charged. As a basic rule always check that the charge quantity is approximately the same as you expected after the charger has indicated that the pack is fully charged. This is a simple method of detecting a problem reliably and in good time, should the charge process be terminated prematurely for any reason. The likelihood of premature termination varies according to many factors, but is at its highest with deep-discharged packs, low cell counts and particular cell types which are known to cause problems. We recommend that you carry out a series of test charges to satisfy yourself that the automatic termination circuit is working perfectly. This applies in particular when you are charging packs consisting of a small number of cells. Before charging please check: have you selected the appropriate charge output for the battery?Are all connections firm, or is there an intermittent contact at any point in the circuit?Please bear in mind that it can be dangerous to fast-charge batteries. For example, if there is a brief interruption due to an intermittent contact, the result is inevitably a malfunction such as a restart of the charge process, which would result in the pack being massively overcharged. A battery could explode or burn, if the charger does have a fault or if the user does choose the wrong charging output and parameters. Connect the charger to an easily accessible mains power socket (220-240V AC, 50Hz). Doing not so or adjusting the wrong voltage or current can cause explosion and fire. [. . . ] In assessing the electro-magnetic compatibility of this product the following norms have been applied: EN 61558-1 LVD EN 61558-2-17 LVD This declaration of responsibility has been issued in accordance with the producer/importer Graupner GmbH & Co. When this product comes to the end of its useful life, you must not dispose of it in the ordinary domestic waste. The correct method of disposal is to take it to your local collection point for recycling electrical and electronic equipment. The symbol shown here, which may be found on the product itself, in the operating instructions or on the packaging, indicates that this is the case. [. . . ]