User manual GRAUPNER ULTRAMAT 12

[. . . ] KG, Henriettenstraße 94-96, 73230 Kirchheim/Teck, Germany guarantees this product for a period of 24 months from date of purchase. The guarantee applies only to such material or operational defects witch are present at the time of purchase of the product. Damage due to wear, overloading, incompetent handling or the use of incorrect accessories is not covered by the guarantee. The user´s legal rights and claims under garantee are not affected by this guarantee. [. . . ] In this program the charger discharges the pack using the set discharge current (0. 00 A, left of screen) until its voltage falls to the set final discharge voltage (05 . The set final discharge voltage should be a value of around 0. 1 V per cell, in order to avoid the pack becoming deep-discharged. Deep-discharging a pack runs the risk of reversing individual cells, i. At top right you can use the INC or DEC button to determine whether the conditioning program is to start with a charge or discharge cycle. After this you set the number of cycles from 1 to 5 (e. , if you set three cycles, the pack will be charged and discharged three times). 00 A), and then recharges it using the charge current (0. The charge process is terminated automatically in accordance with the values already set for , , Ni-MH Delta Peak cut-off voltage". The fundamental rule is that Lithium-based batteries may ONLY be charged using voltage special chargers, and the charge program must be set up correctly in terms of final charge voltage and capacity for the battery type in use. For this reason it is essential to set the charger to the battery capacity instead of the charge current. When the battery on charge reaches the specific final voltage which is appropriate to the battery type, the charger automatically reduces the charge current in order to prevent the battery exceeding the final permissible voltage. If the battery manufacturer states a charge current lower than the 1C rate, then the capacity (charge current) must be reduced accordingly. we recommend the use of the Micro Balancer , Order No. 6491, which ensures that your Lithium batteries are charged optimally, and therefore increases their useful life. Problems caused by mistreating batteries: It is very dangerous to overcharge Lithium-Ion batteries, as they tend to react by gassing, overheating and even exploding. 2 V / cell (Lithium-Polymer and Lithium-Manganese) is exceeded by more than 1%, the lithium ions in the cell start to change into metallic lithium. This material reacts very violently with the water in the electrolyte, and this can result in the cell exploding. On the other hand it is also important to avoid terminating the charge process before the final charge voltage is reached, since this reduces the effective capacity of the Lithium-Ion cell markedly. 1 V under the threshold means a capacity loss of around 7%. Lithium batteries must not be deep-discharged, as this leads to a rapid loss of capacity. [. . . ] Do not allow batteries to come into contact with water - explosion hazard. It is best to , , balance", or even up the cells in Ni-Cd and Ni-MH battery packs by first discharging all the cells separately and then charging up the pack. Individual cells can be discharged using certain chargers, or they can be , , bridged" using a 100 Ohm resistor over each individual cell in the pack. Please don't be surprised if your batteries are not as willing to accept charge in winter as in summer. [. . . ]