VESPA PX 150 USA Workshop Manual page 46

Electrical system
ATTENTION TO THE TECHNICAL SPECIFICATIONS OF
THE SYSTEM, CAN CAUSE ERRORS IN FUNCTIONING
AND RISK OF FIRE.
Dry-charge battery
BATTERY START UP WITH DRY CHARGE
- Remove the battery ventilation duct closing cap and remove the caps from the single elements.
- Fill the battery with electrolyte having a density of 1.270+/-0.01 Kg/l (corresponding to 31+/-1 Bé)
with minimum ambient temperature of 59°F (15°C), up to the top level indicated on the single block.
- Slightly tilt the battery to remove any air bubbles formed during the filling.
- Place the caps on the filling holes of the single elements without tightening them and let the battery
stand. During this phase, the battery undergoes a gasification phenomenon and temperature rises.
- Let it stand until ambient temperature is reached again (this phase may require up to 60 minutes).
- Slightly tilt the battery to favour the removal of any air bubbles, then restore the levels using the same
electrolyte.
Note: This is the last time that electrolyte can be added. Future top ups must be made using
only distilled water;
- Within 24 hours, refill as follows:
- Connect the battery charger terminals according to the right polarity;
- Using the battery charger dwg. 020333Y and/or dwg. 020334Y, select the battery capacity;
- If the battery charger is not available, charge the battery with a constant current of 1/10 of the rated
capacity (for example for a battery with rated capacity of 9Ah, the charge current must be 0.9-1.0A), for
approx. 4-6 hours.
Note: Batteries stored for a long time can require longer times. Battery chargers dwg. 020333Y
and dwg. 020334Y have an automatic protection that stops the recharge after 12 hours to prevent
overheating the battery. In this case, the turning on of the green led does not indicate the end
of the charge but the start of the safety system.
- Let the battery stand with open circuit for approx. 4-6 hours, then check the voltage using a normal
tester.
- If the open circuit voltage is more or equal to 12.6V, the battery charge is good. Slightly tilt the battery
to eliminate any air bubbles formed while recharging.
- Check the electrolyte level again, restore if required up to the tol reference using distilled water, tighten
the caps of the single elements and install it on the vehicle.
- If lower voltages are detected, recharge the battery for 4-6 hours more as described above.
Note: With battery charger dwg. 020334Y you can check the battery charge level by the function
Check. The value shown on the display must be higher than that indicated in the table; if not,
recharge as described above.
ELE SYS - 46
Vespa PX 150 USA