User manual TRONIC KH3157

[. . . ] It is not intended for charging commercial type batteries (even rechargeable types), or lithium-ion batteries, or for use in commercial or industrial applications. Never load commercially available non-chargeable batteries into the appliance ­ these can overheat and explode. Safety instructions. · Never leave the appliance to charge unsupervised. Never touch batteries when they are hot ­ they might explode while they are being taken out. First disconnect the appliance from the power supply and allow the batteries to cool before taking them out. [. . . ] If you place these batteries in NiCd/NiMH battery chargers, they can overheat and explode. a) Inserting batteries · Place the batteries the right way up, as indicated in the charging slots. Otherwise the charging process cannot start. b) Test the batteries first!If you do not know how charged or discharged your batteries are, you can test them as follows: Move the switch to the far left, to the position with the "partly charged batteries" symbol. The test indicator lightat the symbol is lit brightly if the battery is sufficiently charged. If the test indicator light is lit only faintly or not at all, then the battery is almost completely discharged or flat. If you would like to test the other batteries as well, they must be inserted one after the other into this slot. NiCd batteries should only be recharged when they are almost completely discharged. Otherwise, a "memory effect" is created, where the batteries reduce their capacity to the lower level at which they are actually used. NiMH are not susceptible to the "memory effect". 5 c) Discharge NiCd batteries first NiCd batteries that are not fully discharged should be discharged first, to avoid the possibility of "memory effects". If you have inserted up to 4 NiCd batteries, move the switch to the far right, to the position with the "Discharge" symbol. Allow the NiCd batteries to discharge until the test indicator light is barely lit, meanwhile testing the batteries a few times. Important: Do not allow NiCd batteries to become completely discharged, as this may ruin them. Therefore, do not allow the batteries to discharge until the test indicator light goes off completely. The Discharge feature is only available at the four charging slots for 1. 2 V batteries ­ not for 9 V batteries. d) Charging batteries If you have inserted the batteries the right way up, as described at paragraph a) . . . move the switch to the center, to the position with the "Charge" symbol, and . . . If all batteries have been placed correctly, the charge indicator LED lights up at each charging slot. If a charge indicator LED is not lit, even though the battery has been correctly inserted, then the battery is faulty. This will provide sufficient protection against flying battery parts in the event of an explosion due to overheating. 6 e) Keep to the charging time!The best protection against battery overheating is not to exceed the proper charging time. If you wish to calculate the time exactly, please refer to the technical data for information about the charging current required. [. . . ] Taking out batteries When charging is complete and you wish to take out the batteries, . . . · first disconnect the power plug from the power socket, · wait until the batteries have cooled. Storage If you are not going to use the appliance for a long period, disconnect the plug from the power socket and remove all batteries from the charging slots. Caution: If you do not take out the batteries, deposits can accumulate over time at the terminals, depending on the quality of the battery. [. . . ]