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1. Make sure the charger is in initiation state with a circulating pattern on the display or in charge OFF mode
with “000” on the display. If not, press 2/10/25 AMP button repeatedly until “000” shows on the display.
2. Press the Battery Recondition button to start the process.
3. DES appears on the display for 3 seconds, then it changes to three horizontal moving bars.
4. The process takes 24 hours and stops automatically. The display shows “000” when complete.
Alternator Check
Part 1
No Load
(Turn OFF all vehicle’s accessories): The battery must be fully charged before testing the alternator.
Run the engine long enough to achieve normal idle speed and verify there is a no-load voltage.
1. Press Alternator Check to start the check.
2. Alternator Good LED will light to indicate the alternator is good, or F07 will display to indicate the alternator
is out of typical voltage range.
3. Press Alternator Check again to stop the test.
Part 2
Under Load
(Accessories ON): Next, load the alternator by turning on as many accessories as possible (except
for A/C and DEFROST)
1. Press Alternator Check to start the check.
2. Alternator Good LED will light to indicate the alternator is good, or F07 will display to indicate the alternator
is out of typical voltage range.
3. Press Alternator Check again to stop the test.
If the first alternator check indicates a good alternator and the second indicates the alternator is not good, the
problem could stem from: loose fan belts, an intermittent diode failure or possibly bad connections between the
battery and alternator and/or ground.
Notes:
BATTERY VOLTAGE button is disabled in Alternator Check mode.
F07 may display because someone has added a number of accessory loads on the charging system, thereby
increasing current demand from the alternator. MAKE SURE THAT THE ALTERNATOR IS RATED TO SUPPORT
THE APPLICATION.
This check may not be accurate for every make, manufacturer and model of vehicle. Check only 12 volt systems.
APPROXIMATE CHARGING TIMES
The
Black & Decker
®
25 Amp Smart
™
Battery Charger
will automatically adjust the charge rate as the
battery becomes charged, and stop when the battery is fully charged. Deep cycle batteries may require longer
charging time.
For estimates of the time it takes to charge a battery, refer to the following table.
Percent of charge
in battery 75% 50% 25% 0%
at 2 amp rate 7 HRS 14 HRS NR* NR*
at 10 amp rate 1.4 HRS 2.8 HRS 4.2 HRS 5.5 HRS
at 25 amp rate 1 HRS 1.2 HRS 1.7 HRS 2.2 HRS
*NR = Not recommended at 2 amps — use a higher charge rate.
The times shown in the table above are approximate and refer to a 50 Ah automotive battery. For example, a 50
Ah (12 volt) battery is discharged (50%). How long should it be charged at the 10 amp rate? See the chart
above under “50%” and “at 10 amp rate.”
In most cases, battery charging times will vary depending on the size, age and condition of the battery. Smaller
batteries should be charged at a lower rate (2 amps) and an extra hour added to charge time.
TROUBLESHOOTING
Display Indications/Common Problems/Possible Solutions
No Functions
• Check and make sure the charger is plugged into a live 110/120 volt AC outlet.
• Follow the steps outlined in the Operating Instructions section.
F01 — Internal Shorted Cell Battery
If the battery being charged has an internal shorted cell, the F01 will show. We recommend taking your battery
to a certified automotive service center for evaluation.
BC25EB_ManualEN_121007.qxp 12/10/2007 8:42 AM Page 9