Do you have a question about the SBC-125 and is the answer not in the manual?
Questions and answers
PJ Krueger
May 7, 2025
When I first connect SBC-125 to an almost completely dead battery (2 v) and try one of the 3 charging states I get a "BAD AD" msg and it shuts down. No idea what this means. When I get a bit of a charge on the battery with another charger, the unit operates normally.
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Operator’s Manual Manual del Usuario 12V/6V, 125A Battery Charger & Engine Starter 12V / 6V, 125A Cargador de batería y motor de arranque Model/Modelo SBC-125 Temperature Controlled CAUTION: ATENCIÓN: Read and follow all safety Lea y siga todas las reglasde...
9. When it is necessary to remove a battery from vehicle to charge, always remove grounded terminal from battery first. Make sure all accessories in the vehicle are off in order to prevent an arc. SBC-125 USER’S MANUAL PAGE 2...
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8. To reduce risk of electric shock, unplug charger from outlet before attempting any maintenance or cleaning. 9. Operate with caution if the charger has received direct hit of force or been dropped. Have it checked and repaired if damaged. SBC-125 USER’S MANUAL PAGE 3...
2. Ensure that the extension cord is properly wired and in good electrical condition. 3. Wire size must be large enough for the AC ampere rating of the charger, as specified on the next page: SBC-125 USER’S MANUAL PAGE 4...
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Length of cord (feet) AWG* size of cord *AWG-American Wire Gauge SBC-125 USER’S MANUAL PAGE 5...
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8. RATE SELECTION BUTTON 22. AC Power cord 9. BATTERY TYPE BUTTON 23. AC plug 10. GEL LED indicator 11. AGM LED indicator 12. STANDARD LED indicator 13. REVERSE CONNECTION LED indicator 14. CHARGING LED indicator SBC-125 USER’S MANUAL PAGE 7...
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4. Charging start-up threshold is 1V. 5. During maintaining process, the output current is 0.5A for 1S, 1.5A for 1S, 0.5A for 1S, 1.5A for 1S (PULSE)..Repeat. 6. The charger has a clamp storage panel on the back. SBC-125 USER’S MANUAL PAGE 8...
DISPLAY MESSAGES Startup – Display screen and all LEDs illuminate for 0.5 second. “SMARTECH” text will scroll across the display twice followed by “NO CONNECT” text (if nothing is connected to the charger). TESTING is shown on digital screen, battery voltage shows (meanwhile battery VOLTAGE LED is lit).
LED lit Readings below 0% (13.2 volts) will read LO and readings above 100% (14.6 volts) will read HI. If you get a HI or LO reading, have the electrical system checked by a qualified technician. SBC-125 USER’S MANUAL PAGE 10...
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LED indicator Charging state The charger is CHARGING CHARGING LED lit charging the battery. The battery is fully CHARGED/ CHARGED charged. MAINTAINING LED lit The charger is CHARGED/MAIN- MAINTAINING maintaining the TAINING LED lit battery. SBC-125 USER’S MANUAL PAGE 11...
Warning LED Explanation indicator REVERSE The connections are reversed. REVERSED CONNECTION LED lit No battery connected / battery volt- age is lower than 1 volt (dead battery) NO-CONNECT / red and black clamps are connected together. SBC-125 USER’S MANUAL PAGE 12...
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1½ - 2½ h Motorcycle, garden tractor, etc. 12-32 Ah 2½ - 7½ h 200-315 CCA 40-60 RC 7½ - 9½ h CARS/ 315-550 CCA 60-85 RC 9½ - 13½ h TRUCKS 550-1000 CCA 85-190 RC SBC-125 USER’S MANUAL PAGE 13...
When disconnecting, disconnect in the reverse sequence, removing the negative first (or positive first for positive ground systems). A marine (boat) battery must be removed and charged on shore. To charge it on board requires equipment specially designed for marine use. SBC-125 USER’S MANUAL PAGE 14...
Step 3 Determine RATE SELECTION 40A <> 15A BOOST RATE SELECTION 125A ENGINE START Note: When the digital screen is only displayed as OFF, the charger can choose the corresponding mode by pressing RATE SELECTION button. SBC-125 USER’S MANUAL PAGE 15...
Your battery charger can be used to jump start your car if the battery is low. Follow all safety instructions and precautions for charging your battery. Wear complete eye protection and protective clothing. The procedures are as follows. SBC-125 USER’S MANUAL PAGE 16...
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Cranking - When cranking is detected, the charger will automatically deliver up to its maximum output as required by the starting system for up to 10 seconds. SBC-125 USER’S MANUAL PAGE 17...
Read the voltage on the digital display. If you get a reading between 13.2 volts and 14.6 volts, the alternator is working properly. If the read- ing is less than 13.2 volts or more than 14.6 volts, have the charging system checked by a qualified technician. SBC-125 USER’S MANUAL PAGE 18...
Battery cannot Replace the battery with a store electric new one immediately. BAT-BATT Display charge during charging process. SBC-125 USER’S MANUAL PAGE 19...
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This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Product distributed in the United States by Smartech Inc. 8700 Larkin Rd. Suite B Savage, MD 20763 www.SmartechProduct.com...
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Do you have a question about the SBC-125 and is the answer not in the manual?
Questions and answers
When I first connect SBC-125 to an almost completely dead battery (2 v) and try one of the 3 charging states I get a "BAD AD" msg and it shuts down. No idea what this means. When I get a bit of a charge on the battery with another charger, the unit operates normally.