User Manual

18
a hammer or excessive force. Never remove the strip
of caps or add water or electrolyte to the battery
during its service life.
6. For batteries with ratings of less than 18 AH, let the
battery stand for
20 to 60 minutes. For batteries with
higher AH ratings, and/or having the High Performance
rating (designated by an “H” in the part number/
name) allow the battery to stand for
1 to 2 hours.
Yuasa AGM batteries have the amp hour (AH) printed on
the front of the battery case. The stand, or rest period,
allows the electrolyte to permeate into the plates for
optimum performance.
7. Newly activated AGM batteries require an initial
charge. After adding electrolyte, a new battery is
approximately
75-80% charged. After the “stand” period
(step
6), charge the battery to bring it to a full state-of-
charge. The battery charger used for initial charging should
be able to charge at
12.8+-volts for an AGM battery. All Yuasa
battery chargers are capable of reaching this minimum
voltage and initializing/activating an AGM battery.
Activating Conventional Batteries
Sealed at the factory, a new Yuasa Conventional battery has
an indefi nite shelf life as long as it remains sealed (fi ller caps
and red vent cap installed) and is stored at room temperature.
Once the battery is unsealed, it should be activated and
put into service. The cell plates on an unsealed, uncharged
battery will oxidize making charging diffi cult and reducing the
service life of the battery. The following eight steps explain
the process of activating Yuasa’s Conventional, YuMicron and
YuMicron CX batteries:
18
Charge Open Circuit Ambient Temperature 77°F/25°C
16
17
15
14
Terminal Voltage (volts)
12
13
11
10
01020
Ela
p
sed Time
(
minutes
)
30 40 50 60
During the initial charging period, battery voltage may reach over
16-volts. Open circuit voltage should be checked after the battery is
allowed to stand between 1 and 2 hours.
1. The battery must be out of the vehicle and placed on a level
surface. Remove fi lling caps (red, yellow or green colored
battery caps).
2. REMOVE THE RED SEALING CAP FROM THE VENT
ELBOW. If the battery has a red cap on the vent elbow
remove it and throw it away. Never put this cap back on the
battery after it is fi lled with acid as the buildup of internal
gas pressure can cause the battery case to rupture.
3. If using the acid bottle supplied with the battery, place the
container upright on a fl at surface. Carefully cut off the tip
of the bottle’s spout and attach the short tube provided.
Caution, Do not squeeze the bottle when cutting the
fi ll tip.
4. Fill the battery with electrolyte supplied with the battery
or from a bulk container. Do not use water or any other
liquid to activate a battery. Electrolyte should be between
60° F and 86° F before fi lling. If electrolyte is stored in a
cold area, it should be warmed to room temperature before
Elbow
Sealing
Cap
Electrolyte
full after
charging
Always remove the red sealing cap from the vent elbow before fi lling
and activating the battery.
Make sure that the acid level is to the upper mark after the battery is
initially charged. If the level is low fi ll with electrolyte.