Designed for reliable battery monitoring, this battery charge indicator provides automatic 12V/24V recognition, a stepwise LED battery gauge display, flashing reserve warnings, and power-off memory. The rugged IP65 housing and simple installation suit demanding vehicle and marine applications.
Battery state monitoring and low battery alerts
- Automatically recognizes 12V and 24V lead acid batteries without manual adjustment.
- Displays real-time state of charge with 10-segment tri-color LED bar: green (41-100%), yellow (21-40%), red (≤20%).
- Flashing alerts: the second LED from left flashes for energy reserve; the first and second flash together when the battery is empty and needs replacement.
- Step-down only display shows real discharge from full to empty – no false rise without charging.
Smart memory, charge detection, and rugged design
- Power-off memory remembers the last state of charge after power loss.
- Smart charge detection: 10th LED lights only when voltage >13.5V (12V system), preventing false full readings from surface charge.
- C-Control terminal allows connection to ignition or key switch – gauge runs only when vehicle is on.
- IP65 waterproof rating and wide temperature range from -40°F to 185°F for reliable outdoor use.
Applications
LED battery indicators are used to monitor the state of charge for lead-acid batteries in applications such as trucks, RVs, golf carts, boats, forklifts, electric scooters, solar systems, and any battery-operated equipment.
Trucks
RVs
Golf Carts
Boats
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| Model | SISCO-BI-001 |
| Voltage | 12V / 24V auto |
| Display | 10-LED tri-color |
| LED Colors | Green (41-100%), Yellow (21-40%), Red (≤20%) |
| Low Reserve Alert | 2nd LED flashes |
| Empty Alert | 1st & 2nd LEDs flash |
| Charge Start Voltage | >13.5V (12V system) |
| Step-Down Logic | Yes, no false rise |
| Power-Off Memory | Yes |
| C-Control Terminal | Yes (ignition wiring) |
| Waterproof | IP65 |
| Temp Range | -40°F ~ 185°F |
| Housing | ABS |
| Cutout Size | 1.5" x 1" |
| Depth | 1.5" |
| Weight | 45g |
Dimension (unit: mm)
Q1: Does this battery indicator work on both 12V and 24V lead acid batteries?
A1: Yes, it automatically recognizes 12V and 24V lead acid batteries without any manual switches or settings. Simply connect the Pin+ to the battery positive, Pin- to the battery negative, and connect the C-Control terminal to V+ to start the gauge. The voltage recognition is fully automatic based on the battery's actual voltage.
Q2: Why does the display only go down and never go up during use?
A2: This gauge is designed with a step-down only logic to reflect true battery discharge. When a battery is under heavy load (such as climbing a hill in a golf cart), the voltage may temporarily drop, but the actual state of charge hasn't changed. The gauge prevents false readings by not rising without proper charging. Only when a stable charging signal (voltage >13.5V for a 12V system) lasts for a certain period will the gauge show step-up.
Q3: What do the flashing LEDs mean?
A3: The 2nd LED from the left flashes to indicate "energy reserve" – you should charge the battery soon. When both the 1st and 2nd LEDs from the left flash together, it means the battery is "empty" and needs to be replaced with a new one. These alerts help you avoid unexpected breakdowns during operation.
Tips: How to install and use this battery indicator correctly?
The battery indicator is designed for panel mounting on trucks, RVs, golf carts, boats, and other battery-operated equipment. Proper installation and wiring ensure accurate readings and prevent battery drain.
- Choose a dry, vibration-free panel. Connect the C-Control terminal to a key-switched positive wire (ignition) so the gauge only draws current when the vehicle is on, preventing parasitic battery drain.
- The gauge ships with a factory-set “full” memory. After connecting a new battery, keep it powered for at least 2.5 minutes. The gauge will then display the actual battery level and memorize it.
- If the 2nd LED from the left flashes, charge the battery soon. If both the 1st and 2nd LEDs flash together, the battery is empty and needs replacement.
Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.
What is covered?
SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.
What is not covered?
- Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
- Expendable parts.
- Routine cleaning or normal cosmetic and mechanical wear.
- Damage from misuse, abuse or neglect.
- Damage from use of parts other than SISCO approved.
- Damage from use outside the product’s usage or storage parameters.
- Damage from use of parts not sold by SISCO.
- Damage from modification or incorporation into other products.
- Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
- Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
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