GRAUPNER ULTRA TWIN 40 Bedienungsanleitung Seite 24

The charger and the battery to be charged should be set up on a heat-resistant, non-infl ammable and non-conductive surface before use. Never place the
charger directly on a car seat, carpet or similar. Keep all infl ammable and volatile materials well away from the charging area. Provide good ventilation.
Defective batteries can explode or burn!!
Connect the charger 12 VDC input directly to the car battery using the original cables and connectors supplied. The car's engine must be stopped all the
time the charger is connected to the car's battery! Do not recharge the car battery at any time when the charger is connected to it!
The charge output sockets and connecting leads must not be modifi ed, and must not be inter-connected in any way. There is a danger of short-circuit between
the charge outputs and the vehicle's bodywork when the charger is connected to the car battery. The charge leads and connecting leads must not be coiled
up when the charger is in use. Avoid short-circuiting the charge output or the model battery with the car bodywork. For this reason the charger must never be
placed directly on the vehicle's bodywork.
Never leave the charger running or connected to the car battery unsupervised.
Only one battery may be connected to the unit for charging at any one time.
The following types of battery must not be connected to the charger:
• NiCd- / NiMH batteries consisting of more than 8 cells, LiFePO /LiIo/LithiumPolymer batteries consisting of more than 3 cells.
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• Batteries which require a different charge method from Ni-Cd, Ni-MH, Lithium types.
• Faulty or damaged cells or batteries.
• Batteries consisting of parallel-wired cells, or cells of different types.
• Batteries consisting of old and new cells, or cells of different makes.
• Non-rechargeable batteries (dry cells). Caution: explosion hazard!
• 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 or cells fi tted with an integral charge circuit or charge termination circuit.
• Batteries installed in a device, or which are electrically connected to other components.
To avoid short-circuits between the banana plugs fi tted to the charge leads, please always connect the charge leads to the charger fi rst, and only then to the
battery to be charged. Reverse the sequence when disconnecting.
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. If the cells feature has a poorly defi ned voltage peak, the charger may fail to detect the fully
charged state. Fire / explosion hazard!
24 Manual ULTRA TWIN 40