General Notes On Using The Charger - GRAUPNER SJ Ultra MFD 150 Instructions D'utilisation

Overcharging inevitably reduces the capacity of the battery, so do not recharge a hot pack, or
one which has already been charged.
Charging and discharging any battery at a high current shortens the life expectancy of the
pack. Don't exceed the maximum values stated by the manufacturer.
Lead-acid batteries are not capable of being charged at high currents. Never exceed the ma-
ximum charge rate stated by the battery manufacturer.
Protect batteries from vibration, and do not subject them to mechanical stress or shock.
Batteries can generate explosive gas (hydrogen) when on charge and when being discharged,
so it is important to provide good ventilation.
Do not allow batteries to come into contact with water - explosion hazard!
Never short-circuit battery contacts - explosion hazard!
Batteries can explode or burn, if they overheat. We suggest to use a LiPo-security hard
case Order-No. 8370 or 8371 with all Li-battery types and with NiCd und NiMH-batteries
for charging.
Do not open battery cells - corrosion hazard.
Please don't be surprised if your batteries are not as willing to accept charge in winter as in sum-
mer. The ability of a cold cell to accept and store charge is much lower than that of a warm one.
Battery disposal: exhausted batteries are not ordinary household waste, and you must not
dispose of them in the domestic rubbish. The retail outlet where you purchase your batteries
should have a battery recycling container for proper disposal. Trade outlets are obliged by law
to accept exhausted batteries for disposal.

5. General notes on using the charger

Charging batteries
When a battery is charged, a particular quantity of electrical energy is fed into it. The charge
quantity is calculated by multiplying charge current by charge time. The maximum permissib-
le charge current varies according to the battery type, and can be found in the information
provided by the battery manufacturer. It is only permissible to charge batteries at rates higher
than the standard (slow) current if they are expressly stated to be rapid-charge capable. The
STANDARD CHARGE CURRENT is 1/10 (one tenth) of the cells' nominal capacity (e.g. for a
1.7 Ah pack the standard charge current is 170 mA.
Connect the battery to be charged to the charger output sockets using a suitable charge lead
(red = positive terminal, black = negative terminal). Use genuine charge leads of adequate
conductor cross-section exclusively.
Be sure to read the information provided by the battery manufacturer regarding charging
methods, and observe the recommended charge currents and charge times. Do not attempt
to fast-charge batteries unless they are expressly stated to be suitable for the high currents
which this charger delivers.
18 Operating Manual Ultra MFD 150