Low-String Dedicated Series (12 V/24 V with HEAT)
Low-String BMS with HEAT Heating for 12 V/24 V LiFePO4 Packs
80-200 A continuous current with 1-2 A active balancing, built-in HEAT low-temperature flexible heating, and CAN/RS485/Bluetooth communication for 4S-16S LiFePO4 packs in RV, marine, and off-grid solar applications.
Snapshot
Current Range
80-200 A cont.
Balance Current
1-2 A active
Strings
4S-16S
Communication
CAN/RS485/BT
Lead Time
2-3 weeks
MOQ
10 units
Overview
Engineered for Low-Voltage Mobility & Off-Grid
The Low-Series BMS is purpose-built for 12 V to 48 V LiFePO4 packs where space constraints, weight sensitivity, and reliable communication matter. With 80-200 A continuous current, 1-2 A active balancing, and CAN/RS485/Bluetooth in a compact enclosure, it integrates cleanly into RV power systems, marine electrical retrofits, and off-grid solar builds.
Unlike general-purpose BMS units, the Low-Series is optimized for the duty cycles found in mobile and remote installations – where simplicity, reliability, and monitoring access reduce field service overhead.
Situation
Your team is designing a 12V or 24V LiFePO4 battery system for an RV, marine, or off-grid solar installation – and needs a compact BMS with reliable communication, active balancing, and low-temperature charging protection. Space is tight, the environment may be humid or corrosive, and the system must integrate with existing inverter and charge controller equipment.
The Challenge
General-purpose BMS units optimized for stationary ESS are too large for mobile battery compartments and lack the CAN/RS485 communication profiles needed for inverter integration in mobile systems. Without low-temperature heating support, the BMS cannot safely charge in cold conditions – limiting the system's usability in winter camping, marine applications in cold climates, or off-grid cabins at higher altitudes where freezing temperatures are common.
How do you select a low-voltage LiFePO4 BMS with active balancing, CAN/RS485 communication, and low-temperature HEAT heating for RV, marine, and off-grid solar systems?
Our Answer
SSLBATT Low-Series Dedicated BMS delivers 80-200 A continuous current, 1-2 A active balancing, and built-in HEAT low-temperature flexible heating in a compact footprint optimized for 12V/24V LiFePO4 packs. With CAN and RS485 communication for integration with Victron, Deye, Growatt, and other major inverter brands – plus Bluetooth monitoring for local telemetry – it provides reliable protection and remote visibility for RV, marine, and off-grid solar installations. Poland Local Warehouse stock supports 2-3 week lead times for EU customers.
Compact Footprint for Mobile Installations
The Low-Series is designed to fit in battery compartments where space is at a premium – RV pass-through storage, marine battery lockers, and off-grid cabinet installations. The board layout minimizes height and depth while maintaining full-rated current capacity and communication capability.
Low-Temperature HEAT Heating
Built-in HEAT flexible heating enables safe charging below 0 °C by warming the cells before charge current is applied. The BMS controls the heating element based on cell temperature readings – no additional thermostat or separate heater controller required.
Inverter Brand Integration
Pre-tested CAN and RS485 protocol mappings for Victron Energy, Deye, Growatt, GoodWe, SMA, Solis, Huawei, and Schneider Electric inverters. Share your inverter model during technical review and we align the BMS communication parameters before shipment.
Where It Fits Best
| Application | Why it fits |
|---|---|
| RV electrical systems | Compact footprint fits confined battery compartments. Bluetooth monitoring eliminates need for dedicated display panels. |
| Marine propulsion & house banks | Corrosion-resistant terminals and sealed enclosure withstand marine humidity. CAN bus integrates with NMEA 2000 gateways. |
| Off-grid solar & remote cabins | Wide current range supports typical off-grid loads. RS485 enables remote monitoring via solar charge controllers and EMS. |
Engineering Guidance
Pack architecture decisions
| Design item | Why it matters |
|---|---|
| String count (4S-16S) | Determines nominal voltage (12.8 V-51.2 V) and BMS configuration. Verify cell count before ordering. |
| Continuous vs peak current | 80 A model for typical RV loads; 150 A-200 A for larger inverters or motor loads. Peak rating handles startup surges. |
| Communication protocol selection | CAN for inverter integration, RS485 for charge controller/EMS, Bluetooth for local monitoring via mobile app. |
Balance current selection
| Balance current | Recommended use |
|---|---|
| 1 A active balancing | Packs up to 200 Ah with moderate duty cycles. Sufficient for daily charge-discharge in RV and solar applications. |
| 2 A active balancing | Packs above 200 Ah or high-cycle applications. Faster recovery from SOC imbalance in marine and high-demand off-grid systems. |
Engineering Data
Specification Snapshot
Procurement-friendly parameters for fast vendor qualification. Request the PDF datasheet for electrical curves, mechanical drawings, and compliance documents.
SKU
LOW-BMS-SERIES
Strings
4S–16S LiFePO4
Continuous Current
80–200 A
Active Balancing
1–2 A
Communication
CAN / RS485 / Bluetooth
Operating Temp
-20 °C to 65 °C
Safety Layer
BMS & Safety
Engineer-grade protection logic designed for low-voltage packs in mobile and off-grid environments where reliability directly impacts safety and uptime.
Overcharge Protection
Per-cell voltage ceiling enforcement with programmable thresholds and balancing activation.
Over-discharge Cutoff
Programmable low-voltage disconnect protects pack health and prevents cell reversal under deep discharge.
Over-current Protection
Dual-threshold response: sustained current limit for normal operation and instantaneous cutoff for short-circuit events.
Temperature Protection
NTC-based monitoring with charge/discharge temperature limits and automatic derating for extreme conditions.
Integration
Inverter Compatibility
We support common inverter/EMS brands through factory-tested protocol mapping (CAN/RS485) and BMS parameter tuning. Share your inverter model and target charge profile to validate a clean integration. Custom BMS protocol available on request.
Where It Wins
Applications
Match this SKU to proven deployment contexts.
RV & Campervan House Banks
Compact 12 V footprint and HEAT low-temperature charging for winter camping.
Marine & Boat Systems
24 V house banks with 2 A balancing for high-cycling propulsion duty cycles.
Off-Grid Cabins & Remote Solar
48 V off-grid packs with CAN/RS485 inverter integration at altitude.
Winterized Utility Builds
Safe below-0 °C charging for cold-climate vans, cabins and trailers.
FAQ
Frequently Asked Questions
What string configurations does the Low-Series support?
What is the difference between 1 A and 2 A active balancing?
Can the Low-Series BMS communicate with my existing inverter?
What is the lead time and MOQ for Low-Series BMS orders?
What monitoring options are available for the Low-Series?
Request Quote
Request OEM Quote
Factory-direct pricing for Low-Series Smart BMS orders. Share your pack configuration, target current, and inverter model for a 24-hour engineering fit check.