Model: BB-SBM12-PS
Battery Bug - Motorcycle Battery Monitor
For motorcycle, ATV, power sports, and other small engine starting batteries.
Know when to replace the battery before it fails.
For vehicles used every day, the Battery Bug will constantly monitor battery performance, clearly indicate battery state of health and provide peace of mind that the battery is up to the task of reliably starting the vehicle. The BB-SBM12-PS uses CrankCheck technology to test the health of the battery every time the engine is started, tracks the decay of cranking health over time, and provides a 'replace battery' alert and audible alarm before the battery fails. The 6 foot long cables allow the display to be mounted outside the battery compartment.
Extend battery life by avoiding damaging charge conditions.
For motorcycles and or other powersports vehicles often stored for weeks or months at a time, the charge monitoring feature of the Battery Bug will significantly extend battery life and eliminate the need to continuously charge the battery. All batteries naturally lose charge slowly over time. A battery that remains discharged for any period of time permanently loses capacity. By constantly monitoring battery charge level, the BB-SBM12-PS will sound an alarm if the battery reaches a low state of charge, indicating the need to charge the battery immediately to avoid unnecessary battery decay. This feature prevents seldom used batteries from dying a silent death.
The information-packed LCD display shows critical battery health and performance information including: battery state of health and cranking performance of the most recent start. Cranking performance of each start is displayed between 0% (imminent failure) and 100% (like new). When cranking health falls below 10%, a 30 second alarm indicates the battery should be replaced.
The BB-SBM12-PS also includes an automatic volt meter function and displays battery voltage and alternator / charging voltage. If the battery charge level drops to a damaging level for more than one minute, a low battery alarm and icon will indicate the need to recharge.
"Having tested this device it its various development stages on several bikes and over the course of more than 20,000 miles, I give it my enthusiastic endorsement as the most useful, practical, and accurate device for reporting real time voltage and battery condition."
-Stu Oltman, Wingworld Magazine
The CrankCheck and charge level monitoring software for the BB-SBM12-PS is designed specifically for motorcycles other powersports equipment and all other starting batteries for engines up to approximately 2000cc. For large starting batteries used in cars and light trucks (>400CCA), and other large engine starting batteries, the BB-SBM12 is the correct model.
FAQs
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Can the BB-SBM be connected to jump posts rather than directly to the battery?
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Yes the BB-SBM may be attached to terminals remote from the battery. In some vehicles, the battery is inconveniently located, and jump start terminals (remote connections to the battery) are provided under the hood. The BB-SBM may be connected to these remote terminals without significantly affecting BB-SBM test results.
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If the Battery Bug stays on all the time will it drain the battery? Does it time out to save energy?
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The Battery Bug consumes very little power - about 5mA for the BB-DCM series and about 3mA for the BB-SBM series. This is similar to that of the digital clock in a car, and is about the same rate that a car battery loses charge just sitting on a shelf. It would take over 5 months with no charging for a Battery Bug to substantially discharge a typical car battery.
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Does the Battery Bug log data so I can see the battery performance trend over time?
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An inherent feature of the BB-SBM is that it tracks performance over time and stores the worst performance and displays that performance as the indication of overall battery health. It also always shows the results of the most recent start. However all other datapoints are not stored in memory. The BB-SBM does not have a data interface for logging data to a storage device.
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Can the Battery Bug be programmed for the unique battery/starter combination of each vehicle?
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The Battery Bug SBM is programmed to assess actual cranking performance of a battery as it starts an engine. The method the BB uses to assess cranking performance is nearly universal for all battery - engine combinations.
While the BB is optimized for typical automotive and powersports
applications, for the purposes of cranking performance, the software in the BB will also apply to marine and heavy duty / off road applications. The difference in terms of battery / starter configuration for these applications is that the battery is typically 'over sized' for the cranking requirement because the battery must provide capacity to support other needs. The BB-SBM will correctly evaluate the battery's cranking performance, but it will not evaluate the health of the battery in terms of the other needs it must perform. For marine and off-road / heavy duty applications we recommend our Battery Bug Deep Cycle Monitor Series.There may also be some specialty applications where a vehicle designer, for example trying to save weight in a high performance vehicle, may intentionally use a small battery and a small starter motor compared to engine displacement. In this example, the BB will indicate a relatively low cranking health even for a new battery. The indication of the BB is still nominally correct, and the informed user will understand that their battery will not last long in this application.
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How does the Battery Bug differentiate between a failed battery and a failing starter motor?
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Most of the time, starter motors fail in ways that are not detectable by the software of the Battery Bug. The operational impact of a failing starter motor on the battery appears differently to the software of the Battery Bug than the picture of a failing battery. This doesn't rule out the possibility that they could be confused, but its not likely in our testing and experience.
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Can the BB-SBM12 be 'reset' to erase the history of cranking health?
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Yes. To reset the BB-SBM12, simply disconnect one of the BB wires from the battery and the memory will be erased. After a replace battery alarm / indication is shown by the Battery Bug, it is a good idea to reset the Battery Bug. At the next engine start, if the replace battery indication is repeated, you can be confident that a battery replacement is justified.
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Does the BB-SBM12 compensate for extreme temperatures?
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Extreme cold temperatures adversely affect the cranking performance of a battery and the BB-SBM12 will measure and display the resulting degraded performance. However, the BB-SBM12 includes a temperature probe inside the sensor body. If the temperature is extremely cold, a thermometer icon will be displayed so the operator will understand that a poor cranking health result may be the result of a very cold battery rather than low battery life.
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Can the BB-SBM12 tell the difference between the starting performance of a discharged battery and that of a battery nearly at end of life?
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Yes, the BB-SBM12 continuously measures voltage of the battery at rest. If the voltage indicates a low charge level prior to an attempted engine start, the BB-SBM12 will not adjust the cranking health based on that start . Only when the battery is nearly fully charged prior to an attempted start will the cranking health be adjusted.
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How loud is the audible alarm? Can I hear it from inside the vehicle?
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Loud enough. If there is an alarm condition, the Battery Bug will not activate the alarm until the vehicle is turned off. After the engine stops, the alarm will activate, and is quite noticeable unless you are in a very noisy environment.
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Can a single BB-SBM12 be attached to two batteries installed in parallel?
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Yes, the preferred installation on more than one battery in parallel is to attach diagonally across the pack. The black wire should attach to the negative at one end of the pack and the red wire should attach to the positive at the other end of the pack.
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Can the BB-SBM12 be used on boat batteries?
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The software of the BB-SBM12 is optimized for the battery size / engine size ratio that is common in automotive applications. Boats are often designed with very large batteries (often deep cycle batteries) compared to the engine they are starting. For most marine applications we recommend our Battery Bug Deep Cycle Monitor (BB-DCM <link>.)
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Can the BB-SBM12 display be mounted in the cabin of the car?
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The BB-SBM12 is designed to be installed directly to the battery and includes attachment wires that can be stretched (like the cord on a phone handset) to extend the sensor body and display about 18 inches from the battery terminals.
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If the BB-SBM12 is installed near the battery, how will I know what the battery condition is when I am in the car?
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Most people have more important things to do than look at battery data. The BB-SBM12 has audible alarms to indicate any situations that need your attention. So, install it, and forget about it. When you hear it beeping - then take a look to discover the problem.
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Can the BB-SBM12 be installed on a second battery or does it get replaced when the battery dies?
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The BB-SBM12 can be removed from the old battery and installed on the replacement. Buy just one and use it for the life of the vehicle.
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Can the BB-SBM12 be installed on any battery?
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The BB-SBM12 may be installed on any size 12V battery used primarily for starting an engine. This includes wet, maintenance free, gel, AGM, and Optima batteries. For 12V batteries used for applications other than engine starting, you should use a deep cycle battery monitor.
Features
Performance: The Battery Bug constantly analyzes key parameters of battery operation
- CrankCheck automatically tests cranking performance at every start
- A microprocessor continuously monitors decay in battery cranking performance and calculates total battery cranking state of health
- The Battery Bug monitors charger and alternator performance for damaging over-charge and under-charge conditions
- Automatic volt meter mode shows battery terminal voltage every two seconds
- Battery temperature is constantly measured and the cranking state of health alarm is adjusted for extreme low temperatures
Audible Alarms: Install it and forget it. The Battery Bug will sound an alarm when the battery needs attention.
- Replace battery / end of life alarm will sound when cranking health drops below 10%
- The overcharge alarm will sound when alternator voltage is above 15.0V
- Low battery / recharge when a chronic undercharge condition is detected and the battery needs to be charged.
Display: The informative LCD display provides a complete picture of battery health
- Starting performance of the most recent engine start is displayed by a flashing bar on the analog display.
- Cranking state of health / battery life is shown as a numerical state of health number and also is displayed on the analog display.
- Battery voltage and alternator / charger voltage are displayed so correct charging functions can be confirmed.
- Replace battery and low battery icons indicate what actions need to be taken when an alarm is active.
Installation and Compatibility:
- Compatible with any 12V battery used for engine starting. Optimized for starting batteries for motorcycle / powersports engines.
- Software is optimized for batteries used for starting motorcycles, other powersports equipment, and other small engine starting batteries.
- 6.4mm ring terminals and flexible leads connect to bolt style battery terminals
- Installs in minutes directly to battery
- Rugged, water-tight case conveniently mounts to battery surface
Specifications
Description | Battery Failure Warning System for Engine Starting Batteries |
Part Number | BB-SBM12-PS |
Applications | Cranking batteries for motorcycles, powersports equipment, and other small engine starting batteries |
Operating Parameters | |
System voltage, nominal | 12V |
Input voltage range | 9 - 16V DC |
Battery constructions supported | WET, MF, VRLA, AGM |
Battery types supported | Cranking battery |
Power consumption | <4mAh (sensor) |
Internal battery | None |
Operating temp | -15C to 85C* |
Battery size range | 50 to 400CCA |
Battery connection | 6.4mm ring for bolt terminal |
Display | LCD - Digital, graphical, icons |
Buttons | None |
Test frequency | Every engine start |
Test time | ~2 sec. |
Test technology | CrankCheck |
Safety standards | CE |
Warranty | 1 year |
Reverse wiring protection | Yes |
Performance and Diagnostics | |
Battery voltage | Yes |
Alternator voltage | Yes |
Overcharge indicator / alarm | Yes |
Low battery / recharge indicator / alarm | Yes |
Extreme temperature indicator | Yes |
Cranking health test | Yes |
Cranking state of health (%) | Yes |
Starting health analysis | Yes |
Starting failure, replace battery indicator / alarm | Yes |
Capacity test (large pulse resistance) | No |
State of charge / Charge level % | No |
Analog energy fuel gauge display | No |
State of health / Remaining battery life | No |
Analog battery life display | No |
Low battery life / replace battery indicator / alarm | No |
Automatic battery size calibration | No |
Automatic Temperature calibration | No |
Physical Specifications | |
Dimensions | 55mm x 55mm x 19mm (sensor) |
Case material | ABS Plastic (IEC 68-2-32) |
Water resistance | IPX-5 |
Mounting | Surface mount (adhesive/mechanical) |
* Sensor continues to operate down to -40C. LCD display loses function if temp below -15C. | |




