User manual GRAUPNER POWER SUPPLY 13.8V 0-12A

[. . . ] ⷠProtect the charger from dust, damp, rain, heat (e. It should only be operated in dry indoor conditions. ⷠThe case slots serve to cool the charger, and must not be covered or enclosed; set up the charger with space round it, so that cooling air can circulate unhindered. If the 100~240V AC input is selected, for pluggable equipement like the Ultramat 8, the socket-outlet shall be installed near the charger and shall be easily accessible. [. . . ] Batteries must always be supervised when on charge. Ensure that all connectors and terminal clamps make good, sound contact. 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. Lithium-Polymer cells This charge program is only suitable for charging Lithium-Polymer batteries with a nominal cell voltage of 3. The main outstanding feature of Lithium batteries is their much higher capacity compared to other battery types. This is an important advantage, but it is balanced by the requirement to handle the batteries differently, especially with respect to charging and discharging, if the danger of using them is to be minimised. There are important basic rules governing the handling of these cells, and they must be observed at all times. For additional information and safety notes please study the battery manufacturer's published specifications. The fundamental rule is that Lithium-based batteries may ONLY be charged using special chargers which are designed and set for the actual battery type (final charge voltage, capacity). The method of charging these batteries is different to the one employed with Ni-Cd or Ni-MH batteries, and is based on what is known as a constant current / constant voltage process. Example: with a battery capacity of, say, 1500 mAh the corresponding 1 C charge rate is 1500 mA, or 1. The Ultramat 8 has been developed to provide a method of charging NiMH and NiCd batteries which is as simple and safe as possible. This means that the Ultramat 6 starts charging at a fairly low current, and carries out an assessment of the battery before automatically raising the charge current. When the pack approaches the maximum charge capacity, the unit reduces the charge current, again completely automatically. This charge process always charges the battery to 100% capacity in a way which avoids cell damage. "Battery charged" mode As soon as the battery reaches the set Delta-Peak cut-off voltage / cell, the Ultramat 8 automatically switches the process off. At the same time an audible signal sounds at one-second intervals for about fifteen seconds. It is completely normal for the battery pack to feel warm (approx. 30 - 45°C) towards or after the end of the charge process. disconnect the charged battery and press the NiMH / NiCd button in order to switch the Ultramat 6 to Standby mode. The blue and red LEDs now flash at five-second intervals to indicate Stand-by mode. Warm batteries offer much higher performance than cold ones, so don't be surprised if your batteries don't seem so effective in the Winter. [. . . ] This charge process always charges the battery to 100% capacity in a way which avoids cell damage. "Battery charged" mode As soon as the battery has reached 100% of its capacity, the Ultramat 8 automatically switches the process off. This is indicated by the blue LiPo LED flashing at 0. At the same time an audible signal sounds at one-second intervals for about fifteen seconds. [. . . ]