4.Clamp the positive (red) clamp to the positive (POS, P, +) battery post. Clamp the negative (black) clamp to the negative (NEG, N, -) battery post.

TO TEST THE BATTERY

1.Once you connect the tester to a battery, the screen will come on and display BATTERY TEST and the voltage of the battery the tester is connected to. Press the ENTER button.

2.The screen will show BATTERY TYPE and STANDARD SLI type of battery. To change the battery type to VRLA/GEL/AGM/SLA, press the FORWARD or BACK button. Once the correct battery type has been selected, press ENTER. (See GLOSSARY for battery definition.)

3.The screen will show SELECT RATING and either CCA (SAE), IEC, DIN, JIS or EN battery rating. To change the battery rating, press the FORWARD or BACK button. Once the correct battery rating has been selected, press ENTER.

4.The screen will show SET CAPACITY and a number with the rating you previously chose. To change the capacity to a different number, press the FORWARD or BACK button. Once the correct battery capacity has been selected, press ENTER. The following chart shows the capacity ranges available for each battery rating.

•CCA (SAE): 40 – 2000

•EN: 40 – 2100

•IEC: 30 – 1500

•DIN: 25 – 1300

•JIS: By Battery Type Number

5.The screen will show TESTING. After several seconds, the screen will change to show the results of the test. After the results are displayed, press ENTER.

NOTE: If the tester determines that the battery voltage is low (based on the type, rating and capacity that was previously input), it will ask IS BATTERY CHARGED? This means, has the battery been charged without any drain placed on it within the last 24 hours. Press the FORWARD or BACK button to switch between YES and NO. Once the correct option has been selected, press ENTER.

6.When the test is complete, the display shows the volts and CCA or percent of charge. Press the FORWARD or BACK button to select: SOH

(STATE OF HEALTH) or SOC (STATE OF CHARGE). One of five results will be displayed:

•GOOD AND PASS: The battery is good and capable of holding a charge.

•RECHARGE AND RETEST: The battery is discharged, and the battery condition cannot be determined until it is fully charged. Recharge and retest the battery.

•BAD AND REPLACE: The battery will not hold a charge and should be replaced.

•BAD CELL AND REPLACE: The battery has at least one cell short circuit and should be replaced.

•LOAD ERROR: The tested battery is bigger than 2000 CCA or 200 Ah, or the clamps are not connected properly. Diagnose and correct the problem, then fully charge the battery and retest it. If the reading is the same, replace the battery. NOTE: Are there any accessories still turned on? If yes, turn them off, charge the battery and retest it. If no, replace the battery since the charging system is working and a good battery should have accepted a charge.

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Schumacher PST-900X owner manual To Test the Battery
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PST-900X specifications

The Schumacher PST-900X is a state-of-the-art power supply and battery charger that has rapidly gained popularity among automotive enthusiasts and professionals alike. This versatile device is designed to meet the demands of modern vehicles, providing reliable performance in various applications.

One of the standout features of the PST-900X is its multiple charging modes, including standard, AGM, and gel cell settings. This versatility ensures that it can cater to a wide range of battery types and sizes, making it suitable for use with cars, trucks, SUVs, motorcycles, and even some marine applications. With a maximum output of 9 amps, the PST-900X can quickly and efficiently charge batteries, reducing downtime and ensuring that vehicles are ready to hit the road when needed.

The PST-900X incorporates advanced microprocessor technology, which not only optimizes the charging process but also enhances safety features. This smart technology allows the charger to automatically adjust its output to match the battery's needs, preventing overcharging and prolonging battery life. Furthermore, it includes built-in protections against short circuits, reverse polarity, and overheating, ensuring safe operation in even the most challenging conditions.

Another notable characteristic of the Schumacher PST-900X is its compact and portable design, making it easy to store in a trunk or carry from one vehicle to another. The charger features clear LED indicators that display its status, allowing users to monitor the charging process easily.

The PST-900X also features a durable construction, designed to withstand the rigors of everyday use. Its non-slip grip and rugged exterior ensure that it can handle the challenging environments often encountered by automotive professionals.

In summary, the Schumacher PST-900X is a powerful, versatile, and safe battery charging solution that accommodates various battery types and sizes. With its smart technology, robust safety features, compact design, and user-friendly interface, it stands out as an essential tool for anyone in need of reliable charging capabilities. Whether for home use or professional applications, the PST-900X offers the performance and reliability that users expect from Schumacher products, solidifying its place in the market as a go-to solution for battery maintenance and care.
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