JTERY TESTING INFORMATION
neral information
sealed lead-acid batteries in fire alarm service should be tested annually.
Replace all sealed lead-acid batteries that have been in service for four or more years.
It is recommended that a battery tester made specifically for checking sealed lead-acid batteries be used.
Such a tester is available under Service Part No. 553-602.
battery tester is unavailable, the “voltage response test” described below can be used to detect batteries with
y low capacity or shorted ceils.
DORTANT: A defective battery charger circuit can cause battery failure. Check the condition of the battery
charger when either a battery tester or a voltage response test reveals weakened batteries.
sting
Connect a digital voltmeter across the battery.
Connect the appropriate sized resistor(s) (see Chart 1
Record the end voltage reading.
Treat the battery as described in Chart 2.
) across the battery’s terminals for the listed test time.
CHART 1
VOLTAGE
AMP HR
12 5.2
12 6.2
RESISTOR ’ ,,,,ATTs PART NUMBER
(OHMS) AND DESCRIPTION
1 TESTTIME
a.0 50 380-008 (2 in parallel) 2 Seconds
6.0 50 380-031 1 2 Seconds
I
12
I a I 4.5 /
50 / 380-031 (adi to 4.5 Ohm) 1 2 Seconds
I
12
I
10 I
4.0
I
50 / 380-031 (adi to 4 Ohm) 1 2 Seconds
I
12 I ia
I
2.0
I
100 I 380-031 (3 in parallel)
/ 2 Seconds
I
12
I 20
I
1.5
I
100 I 382-090 (2 in parallel) 1 2 Seconds
12 33 / 1.0 150 382-090 (3 in parallel)
6’ 50
(
. 150 382-090 (3 in parallel)
12 110 1 .o 150 382-090 (3 in parallel)
* Test 2 batteries in series for 12V
3
l l l
CAUTION *
l l
Resistors will get hot during test!
Use 12AWG wire for battery-to-resistor hookup.
1 2 Seconds
4 Seconds
4 Seconds
41
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