YUASA - The world's leading battery manufacturer
YUASA - The world's leading battery manufacturer
YUASA - The world's leading battery manufacturer
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B2. Testing the Battery<br />
B2 Conventional Testing - Battery with removable vent plugs<br />
Note<br />
In a good <strong>battery</strong>, the specific gravity(sg) reading should be the same in all cells.<br />
<strong>The</strong> expected tolerance between all 6 cells is 0.03g/cc (e.g. range 1.26g/cc min, 1.29g/cc max).<br />
When charging the <strong>battery</strong> always follow the instructions supplied with the charger.<br />
After charging a flat <strong>battery</strong>, insufficient charging may lead to insufficient acid mixing of the electrolyte above the plates.<br />
Using a multimeter, confirm stabilised measured voltage matches the voltage calculated from specific acid gravity measurement<br />
(Average sg + 0.84 ) x 6 should be equal to measured voltage if the acid is sufficiently mixed.<br />
B2<br />
Measure Voltage and record acid sg in ALL cells<br />
Example 12.6V<br />
1.26, 1.27, 1.26, 1.27, 1.26, 1.27<br />
B2.1 Cell Short<br />
Circuit<br />
Is there one cell with<br />
a low specific gravity?<br />
Example Readings<br />
1.26 1.15 1.26 1.27 1.26 1.27<br />
YES<br />
Dead Cell<br />
Battery is defective =><br />
ACCEPT CLAIM<br />
Replace under warranty terms<br />
and conditions<br />
NO<br />
B2.2 Service<br />
Overcharging<br />
Is the acid discoloured (dark brown) and/or<br />
there is evidence of excessive water<br />
consumption ?<br />
YES<br />
Damage<br />
caused by<br />
overcharge<br />
REJECT CLAIM<br />
Test voltage regulator on vehicle<br />
& check application<br />
NO<br />
Battery Testing<br />
B2.3/B2.4<br />
Sulphation<br />
YES<br />
Is the specific gravity<br />
relatively even but reading<br />
1.25g/cc or less<br />
NO<br />
Charge the Battery<br />
Take note of charge voltage after 1 hour<br />
Is the <strong>battery</strong> accepting recommended<br />
recharge current (eg 075 Professional<br />
4.0A)?<br />
NO<br />
Damage<br />
caused by<br />
deep<br />
discharge or<br />
undercharging<br />
REJECT CLAIM<br />
Test voltage regulator on vehicle and<br />
alternator belt tightness.<br />
Check application<br />
Continue Recommended Charge<br />
NO (First Cycle)<br />
Is the specific gravity<br />
the same in all cells and<br />
above 1.25g/cc?<br />
YES<br />
NO (Second Cycle)<br />
C High Rate Discharge Testing<br />
178
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