FAQ
  1. Applies heavy load to the tested battery with a transient discharging current up to 100Amp, which is similar to real behavior of the starting battery in the vehicle, also to the recommended way (load test) of judging a battery that stated in BCI’s “BATTERY SERVICE MANUAL”.
  2. Minimizes battery drain during test:
    Never fooled by conditions such as surface charge, parasitic drain & contact impedance.
  3. Improved daily garage service efficiency:
    Good in-vehicle test technology.

The comparisons between digital battery tester and traditional load tester are as below:

  • Easy to use interface.
  • No heat problem.
  • Available to perform serial tests.
  • Test multiple lead acid battery builds including AGM flat plate, AGM spiral and Start-Stop.
  • Test both charged and discharged batteries down to 1.5V.
  • Test based on SAE, DIN, EN, IEC & JIS international battery industry ratings, under the operation temperature at 30℉~122℉/0℃~50℃.
  • Fast diagnosis in 2 seconds, DHC testers show recommended actions.
  • Double your battery and electrical business just by making a simple, minutes test part of your daily inspection routine.

The comparisons between digital battery tester and traditional load tester are as below:

  • Size: DHC digital battery testers are more compact and much more lighter than traditional ones.
  • Measurement time: traditional battery tester takes 10-15 sec to do the measurement, while DHC digital battery tester takes only 2 sec to complete the measurement.
  • Continuous using: DHC digital battery tester allows continuous using, and the function remains in good conditions.
  • Restriction: Traditional battery tester can only be used when the tested battery is fully charged, however, the DHC digital battery tester has no restriction on the measurement.

By using the technology we developed, which is proved by worldwide Car OEs and Battery OEs, DHC digital battery testers are capable of telling results from SOC & SOH. Besides, DHC digital battery testers will also give the suggestions such as

GOOD & PASS, RECHARGE & RETEST, CAUTION, RECHARGE & RETEST, BAD & REPLACE, BAD CELL & REPLACE immediately after the test is over so that you can plan your next move accordingly.
  • Good & pass: The battery is good.
  • Good & recharge:The battery is good but needs to be recharged.
  • Caution:The battery may be serviceable but with decreased capability to start the engine. The battery might fail under extreme climate conditions. Please pay attention to the battery for possible replacement and charging system analysis. Possible reasons are:
    • For flooded battery, the electrolyte is below the line or the battery is leaking electrolyte because of the broken container.
    • The battery cannot hold a charge because of the sulfuric acid crystal on the plates.
    • The positive/negative plates or the separators are damaged or shedding. The battery is getting old.
  • Recharge & retest: The battery is discharged. Please recharge it and retest. Possible reason is:
    • The battery has not been used for a long time. To not misjudge the battery, please recharge it and retest. If the result is still “Recharge and retest” after the charging, the battery should be replaced since it cannot hold a charge.
  • Bad & replace: The battery cannot hold a charge. Please replace it. Possible reasons are:
    • The battery cannot hold a charge because of the sulfuric acid crystal on the plates.
    • The positive/negative plates or the separators are damaged or shedding.
    • The battery is getting old (overcharged or over discharged).
  • Bad cell & replace: The battery has at least one cell short-circuited. Please replace it. Possible reason is:
    • The positive/negative plates or the separators are damaged or shedding. The short circuit is because of the sediment.
  1. SOC: The percentage of the tested battery is actually charged.
  2. SOH: The capacity of the tested battery is left (%) comparing with the marked original battery capacity.
  1. Normal: The alternator functions well.
  2. Low: The alternator cannot provide sufficient current to the battery.
    1. Check the belts to ensure the alternator is rotating with engine. Please replace the belt if it is slipping or broken.
    2. Check the connections from the alternator to the battery. Please clean or replace the cable if the connections are loose or heavily corroded.
    3. Please replace the alternator if the belt and connections are all in good condition.
    4. High: The voltage output from the alternator exceeds the limits of a functioning regulator . Check to ensure there is no loose connection and the ground connection is normal. Please replace the regulator if there is no connection issue. Since most alternators have the regulator built inside, the alternator will need to be replaced as well.
  3. Normal : Diode functions well in the alternator / stator.
  4. High: It means one or more diodes in the alternator are not functioning or there is starter damage. Check to ensure the alternator mounting is sturdy and that the belts are in good shape and functioning properly. If the mounting and belts are good, please replace the alternator.
  5. No ripple detected: Diode functions well in the alternator / stator.
  • Normal: The charging system is showing normal output from the alternator. No problem detected.
  • Low: The alternator cannot provide sufficient current for the system’s electrical loads and the charging current for the battery.
    • Check the belts to ensure the alternator is rotating with engine. Please replace the belt if it is slipping or broken.
    • Check the connections from the alternator to the battery. Please clean or replace the cable if the connections are loose or heavily corroded.
    • Please replace the alternator if the belt and connections are all in good condition.
  • High: The output of the alternator from the battery exceeds the normal limit of a functioning regulator. Check to ensure there is no loose connection and the ground connection is normal. Please replace the regulator if there is no connection issue. Since most alternators have the regulator built inside, the alternator will need to be replaced as well.

Since we have different charging algorithm for each tested battery type, the test result will be different even when the tested battery is the same. Please make sure to select the right battery type before the test is performed, so you won’t get the fault test result.

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