ABAT100 Online Battery Monitoring Solution
Know the condition of every battery—before backup power is needed.
A 24/7 online monitoring and early-warning system for UPS and stationary lead-acid battery banks. Track individual voltage, internal resistance and temperature, together with string current, SOC, SOH and alarms.
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For new installations and retrofit projects in data centers, telecom, banking, healthcare, transport and industrial facilities.
The operational challenge
A healthy string voltage can hide a weak individual battery.
Periodic manual tests provide only a snapshot. In a long series string, one deteriorating cell can shorten runtime or compromise the entire backup system when an outage occurs.
Limited visibility
Overall UPS readings do not reveal voltage, resistance or temperature changes at individual battery level.
Manual inspection gaps
Faults may develop between scheduled maintenance visits, leaving teams without early warning.
Inconsistent ageing
Temperature, connection quality and operating history cause batteries in one string to age differently.
Integration complexity
Critical facilities need battery alarms and trends available in the existing monitoring platform.
System architecture
From every battery terminal to local and centralized monitoring.
Modular hardware supports a single UPS battery string or a multi-room, multi-site monitoring project.
Voltage · internal resistance · negative-terminal temperature
Charge/discharge current · ambient temperature
Aggregation · analysis · alarms · records
Where Ethernet or another upper-level protocol is required, confirm the communication gateway and point list during project design.
Product composition
A complete, scalable battery condition monitoring system.
Final quantities depend on battery voltage, batteries per string, number of strings and the required display or platform connection.
ABAT100-S-02 / S-06 / S-12
Dedicated modules for individual 2 V, 6 V and 12 V batteries.
- Individual voltage
- Internal resistance
- Negative-terminal temperature
- Automatic periodic resistance test
ABAT100-C + Hall Sensor
Captures operating conditions at complete battery-string level.
- Charge/discharge current
- 0–1000 A measurement range
- Ambient temperature
- One set per string
ABAT100-HS
Aggregates cell and string data for analysis, alarms and communication.
- Up to 120 batteries
- SOC and SOH estimation
- Configurable alarm thresholds
- RS485 / Modbus-RTU
ATP Touch Screen
Local overview for operating staff and service engineers.
- Real-time battery status
- Alarm and trend display
- Parameter configuration
- On-site visibility
AcrelEMS / Acrel IoT
Optional centralized supervision for multiple rooms or sites.
- Central alarm overview
- Multi-site monitoring
- Historical analysis
- Remote visibility
Power & Communication
Complete the project with the necessary power and communication components.
- 24 V DC power supply
- Battery connection leads
- RS485 communication cable
- Gateway if required
Core capabilities
Turn battery data into actionable maintenance information.
Continuous measurements, configurable alarms and historical trends help teams identify abnormal batteries before backup performance is affected.
Individual voltage
Compare every battery with string maximum, minimum and average values.
Internal resistance
Track resistance and change rate to identify deterioration and inconsistency.
Temperature
Monitor negative-terminal and ambient temperature for abnormal heating.
String current
Measure charge and discharge current using a Hall-effect current sensor.
SOC & SOH
Provide estimated state of charge and state of health for maintenance reference.
Configurable alarms
Set thresholds for voltage, current, temperature, resistance, SOC, SOH and communication status.
Technical parameters
Key specifications for preliminary system design.
Confirm final models, ranges and accessories against the latest product datasheet before ordering.
| Item | ABAT100-S | ABAT100-C | ABAT100-HS |
|---|---|---|---|
| Primary function | Individual voltage, resistance and negative-terminal temperature | String current and ambient temperature | Management, calculation, alarms, records and communication |
| Application | 2 V, 6 V or 12 V batteries; capacity below 3000 Ah | One module per monitored string | One host per string; up to 120 batteries |
| Voltage accuracy | ±0.1% | — | Aggregated from field modules |
| Internal resistance | 50–65,535 μΩ; 1 μΩ resolution | — | Trend and alarm management |
| Temperature | −5 to 105 °C; ±1 °C | Ambient temperature; ±1 °C | Threshold and alarm management |
| Current | — | 0–1000 A; ±1% | Charge/discharge analysis |
| Communication | System bus to host | System connection to host | RS485, Modbus-RTU |
Application scenarios
For facilities where battery failure is an operational risk.
Suitable for stationary backup systems requiring cell-level visibility, early warning and facility-system integration.
Data centers
UPS rooms, colocation facilities, cloud infrastructure and disaster-recovery sites.
Banking & finance
Head offices, transaction centers, data rooms and critical security systems.
Telecommunications
Core network rooms, switching facilities and high-priority communication sites.
Industrial facilities
Electronics, automotive, process plants and operations with critical control loads.
Healthcare & transport
Hospitals, airports, rail systems and other critical infrastructure.
Utilities & public facilities
UPS and stationary DC backup systems in power, water and government sites.
Typical configuration
Example: one UPS string with 40 × 12 V batteries.
This example shows the selection logic. Final quantities and current-sensor range must be based on the project single-line diagram and battery data.
Example bill of materials
| ABAT100-S-12 | 40 pcs |
| ABAT100-C | 1 pc |
| ABAT100-HS | 1 pc |
| Hall current sensor | 1 pc |
| 24 V DC power supply | As required |
| ATP touch screen / gateway | Optional |
| Cables and accessories | 1 set |
Configuration coverage
- All 40 individual 12 V batteries
- String current and ambient temperature
- Alarms, SOC and SOH estimation
- RS485 Modbus-RTU connection
- Scalable for additional UPS strings
Selection guide
Four steps to a correct project configuration.
Provide the following information so Acrel can prepare the system architecture, bill of materials and communication proposal.
Confirm battery type
Nominal voltage, chemistry, capacity in Ah and battery model.
Define each string
Batteries per string, number of strings and parallel arrangement.
Select current range
Maximum charge/discharge current and conductor dimensions.
Define integration
Local display, platform, protocol and communication distance.
Frequently asked questions
ABAT100 project FAQ.
Can ABAT100 be installed on an existing UPS battery bank?
Yes. The product material describes online installation with detachable connection leads. The UPS operator must still approve the site method statement and electrical safety procedure.
How many batteries can one ABAT100-HS manage?
One ABAT100-HS manages one battery string and supports up to 120 individual battery modules.
Which battery voltages are supported?
ABAT100-S-02, S-06 and S-12 are intended for individual 2 V, 6 V and 12 V batteries. Confirm battery chemistry and model compatibility for each project.
Can it connect to BMS, DCIM or SCADA?
ABAT100-HS provides RS485 using Modbus-RTU. Ethernet-based or other protocols may require a gateway. Confirm the register map and integration boundary before quotation.
Does it replace periodic maintenance and discharge testing?
No. Online monitoring improves visibility and early warning, but site maintenance and capacity testing should follow the battery and UPS manufacturers’ requirements.
What information is needed for a quotation?
Battery voltage and capacity, batteries per string, number of strings, maximum current, UPS/DC details, display requirement and upper-level communication protocol.
Project support
Send us your battery-string details.
Receive a project-specific architecture, model selection and bill of materials for your UPS or stationary battery monitoring project.
- Battery model, voltage and capacity
- Batteries per string and number of strings
- Maximum charge/discharge current
- UPS or DC system details
- Required display and communication protocol
- Project country and expected delivery date
Post time: Aug-01-2026
