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YUASA - The world's leading battery manufacturer

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B1.Testing the Battery<br />

B1 Using Recognised Digital tester - Batteries without removable vent plugs<br />

We recommend that a test is carried out with a recognised digital tester, for example Midtronic or Bosch Type 121 tester<br />

In the absence of specialised testing equipment perform a high rate discharge test (go directly to Procedure B2 )<br />

B1<br />

If testing <strong>battery</strong> on vehicle, you must remove surface charge<br />

With engine off, switch on lights for 1 minute then switch off all electrical loads and leave for 2 minutes prior to testing<br />

Before testing, ensure <strong>battery</strong> terminals are clean and tester leads are in good condition<br />

MIDTRONICS<br />

BOSCH<br />

Leave to<br />

stand for<br />

4 hour<br />

minimum<br />

Choose the correct SAE testing mode<br />

Select the SAE CCA rating shown on the<br />

label of <strong>battery</strong>*<br />

* For Marine, Leisure Batteries use<br />

4x 20 hour rating<br />

Choose the correct SAE testing mode<br />

Select 90% of SAE CCA rating shown on the top<br />

label of <strong>battery</strong>*<br />

* For Marine, Leisure Batteries use<br />

4x 20 hour rating<br />

Leave to<br />

stand for<br />

4 hour<br />

minimum<br />

RECHARGE<br />

BATTERY<br />

Press the Test Key<br />

Typically Midtronics reading are reduced by<br />

4A for every °C loss in temperature<br />

Latest models - automatically adjust for temperature.<br />

For Earlier Midtronic 415 tester use * key<br />

Press the Test Key<br />

*Note Data differs considerably from Midtronic tester,<br />

hence reason for use of 90% rating for testing<br />

suspect warranty batteries<br />

Use arrow keys to adjust for temperature<br />

RECHARGE<br />

BATTERY<br />

RESULTS<br />

RESULTS<br />

GOOD BATTERY<br />

Battery is fully charged and ready to use<br />

REJECT CLAIM<br />

GOOD BATTERY<br />

Battery is fully charged and ready to use<br />

REJECT CLAIM<br />

GOOD + RECHARGE<br />

Charge <strong>battery</strong> then ready for use<br />

REJECT CLAIM<br />

GOOD + RECHARGE<br />

Charge <strong>battery</strong> then ready for use<br />

REJECT CLAIM<br />

CHARGE + RETEST<br />

Charge <strong>battery</strong> and test again If same results<br />

appear after charging then<br />

REJECT CLAIM*<br />

CHARGE + RETEST<br />

Charge <strong>battery</strong> and test again If same results<br />

appear after charging then<br />

REJECT CLAIM*<br />

REPLACE BATTERY<br />

Battery has lost performance due to<br />

external factors<br />

REJECT CLAIM**<br />

BAD CELL BATTERY<br />

Battery is defective => ACCEPT CLAIM<br />

Replace under warranty terms and conditions<br />

If repeated failures from one fleet customer, further<br />

investigation of <strong>battery</strong> overdischarge is required<br />

TEST NOT POSSIBLE / CHECK CONNECTION<br />

No display - check tester leads contact<br />

Check Voltage with digital multimeter as <strong>battery</strong><br />

could be deeply discharged<br />

Switch off all electrical consumers when testing a<br />

<strong>battery</strong> fitted to a vehicle.<br />

Multimeter OK , but not Midtronics, then disconnect<br />

<strong>battery</strong> from car and retest<br />

NO DISPLAY<br />

Despite GOOD CONTACT and RECHARGING<br />

Check Voltage with digital multimeter<br />

If Voltage = 0 volts ACCEPT CLAIM<br />

REPLACE BATTERY / UNSERVICEABLE<br />

Battery has lost performance due to external factors<br />

Is Start capability less than 60% then<br />

REJECT CLAIM** (using 90% of label rating)<br />

REPLACE BATTERY / CELL SHORT CIRCUIT<br />

Battery is defective => ACCEPT CLAIM<br />

Replace under warranty terms and conditions<br />

If repeated failures from one fleet customer, further<br />

investigation of <strong>battery</strong> overdischarge is required<br />

TEST NOT POSSIBLE / CHECK CONNECTION<br />

No display - check tester leads contact<br />

Check Voltage with digital multimeter as <strong>battery</strong><br />

could be deeply discharged<br />

Switch off all electrical consumers when testing a<br />

<strong>battery</strong> fitted to a vehicle.<br />

Multimeter OK , but not Midtronics, then disconnect<br />

<strong>battery</strong> from car and retest<br />

NO DISPLAY<br />

Despite GOOD CONTACT and RECHARGING<br />

Check Voltage with digital multimeter<br />

If Voltage = 0 volts ACCEPT CLAIM<br />

Recommended<br />

Equipment<br />

A voltage meter to<br />

check Open Circuit<br />

Voltage<br />

A recognised brand<br />

digital tester (eg<br />

Midtronics)<br />

A variable high rate<br />

discharge tester to<br />

check/confirm the<br />

batteries ability to start<br />

the vehicle<br />

A hydrometer to check<br />

acid specific gravity and<br />

condition<br />

A good quality charger<br />

to enable discharged<br />

units to be recharged<br />

Battery Testing<br />

Note<br />

* <strong>The</strong> <strong>battery</strong> has been subjected to excessive charge/discharge whilst in use.This may be a malfunction of the vehicle charging system, as a result of excessive electrical<br />

consumers, infrequent vehicle usage or extreme operating conditions (eg Mini cabs service or delivery vehicles) <strong>The</strong>se are not Manufacturing Defects.<br />

** <strong>The</strong> <strong>battery</strong> can no longer deliver performance compatible with the original specification, the <strong>battery</strong> has lost performance due to outside factors, overcharging, undercharging,<br />

deep cycling, wear and tear. <strong>The</strong>se are not Manufacturing Defects.<br />

<strong>YUASA</strong> - <strong>The</strong> <strong>world's</strong> <strong>leading</strong> <strong>battery</strong> <strong>manufacturer</strong><br />

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