CHARGING TIPS
To avoid a battery explosion, never attempt to charge a frozen battery.
Warning:
Gel and AGM (Absorbed Glass Mat) batteries require a voltage-limited
charger. Charging a Gel or AGM battery on a typical shop charger, even one time, may
greatly shorten its life.
Important:
Never overcharge batteries. Excessive charging will shorten battery life.
Prior to charging, read the manufacturer’s instructions for proper charger hook-up and
use.
Turn off charger prior to hookup to avoid dangerous sparks.
PROTECT YOUR EYES!
Warning:
If the electrolyte is accessible, verify that plates are covered before beginning
to charge. At the end of charge, add distilled water as needed to bring levels to the
proper height. If water is added, charge for an additional 30 minutes to mix. If electrolyte
levels are low but battery is not accessible, remove battery from service.
The maximum charge rate in amperes should be no more than 1/3 of the battery’s
reserve capacity minute rating. If the terminal voltage exceeds 16.0 volts while charging,
reduce the charge rate.
Continue charging and reduce the rate as needed until a 2 hour period results in no
increase in voltage or decrease in current.
If violent gassing or spewing of electrolyte occurs or the battery case feels hot to the
touch, temporarily reduce or halt charging.
6 V
12 V
50 AMPS 30 AMPS 20 AMPS 10 AMPS
6.3
12.6
100%
6.2
12.4
75%
20 MIN.
35 MIN.
48 MIN.
90 MIN.
6.1
12.2
50%
45 MIN.
75 MIN.
95 MIN.
180 MIN.
6
12
25%
65 MIN.
115 MIN. 145 MIN. 280 MIN.
5.9
11.8
0%
85 MIN.
150 MIN. 195 MIN. 370 MIN.
FULL CHARGE
VOLTAGE
STANDARD
BATTERY
STATE
OF
CHARGE
APPROX. BATTERY CHARGING TIME *
TO FULL CHARGE AT 80
o
F/27
o
C
MAXIMUM RATE AT
*
Test wet batteries every 4-6 months and recharge if necessary.
Always test and charge if necessary before installation.
11
11
