Napa 85-303 Manuel D'instructions page 12

0.5 CAUTION - Do not leave Manual chargers unattended.
0.6 CAUTION: If at any time the battery gets hot (above 25°F (52°C)) or acid
comes out of vent caps, STOP charging.
0.7 To maximize battery life - Let automatic chargers complete charging.
11. MULTIPLE BATTERY CHARGING
Batteries of the same voltage may be connected in parallel for
maintenance charging. Charge time increases in proportion to the number
of batteries. Rate of charge decreases in the same proportion.
Example: Charging 2 batteries in parallel will take 2 times longer; each
battery receives /2 the amount of charge showing on the ammeter. Thus,
if the ammeter shows a 30-amp charge, each battery will get a 5-amp
charge (when batteries have the same rating, same state of charge, etc.).
12. CHARGER FEATURES AND CONTROLS
2. The 85-303 does not have an ON/OFF switch. The On and Off commands
are controlled by plugging the 85-303 into a 20V AC electrical wall outlet
only after battery connections have been made.
Charging
*Indicates an overload condition caused by shorting of the battery clamps,
reverse polarity (hookup) connection to a battery, or charging a problem
battery.
LED Indicators
Charged Check Battery*
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