For those seeking a reliable 4s LiFePO4 BMS rated at 150A, the choices can feel overwhelming. The DALY Smart BMS 12V-24V 150A stands out for its active balancing and smart features, making it a top overall pick. Meanwhile, the LiFePO4 4S 12V 150A BMS offers simplicity and affordability for straightforward setups, and the DALY BMS 4S 12V 150A RS485 CAN with Display provides advanced monitoring. The main tradeoffs involve balancing features, communication options, and ease of use. Continue reading for a detailed breakdown of these options and more.
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Key Takeaways
- Active balancing is a key feature that improves longevity and performance, and the top picks include models with this capability.
- Communication options like Bluetooth, WiFi, and CAN bus significantly enhance system monitoring and troubleshooting.
- Simpler BMS models may save money but often lack advanced features, making them suitable for basic applications.
- Build quality and ease of installation vary widely; choosing a well-made BMS reduces long-term maintenance risks.
- Price differences often reflect added features like display screens or smart connectivity, but not always necessary for every user.
| DALY Smart BMS 12V-24V 150A Built-in 1A Active Balancer |  | Best Overall for Versatile Battery Management and Monitoring | Model Number: 100BALANCE-150A | Battery Voltage: 12V-24V | Current: 150A | VIEW ON AMAZON | See Our Full Breakdown |
| LiFePO4 4S 12V 150A Battery Management System with Balance Leads |  | Best for Durability and Waterproof Safety in Fixed Installations | Voltage: 12V | Current: 150A | Cells: 4S | VIEW ON AMAZON | See Our Full Breakdown |
| DALY BMS 4S 12V 150A RS485 CAN with 3-inch Display, WiFi & Bluetooth |  | Best for DIYers and Power System Enthusiasts with Remote Monitoring | Battery Type: Lithium | Configuration: 4S 12V | Current: 150A | VIEW ON AMAZON | See Our Full Breakdown |
| DALY BMS 4S 12V 100A LiFePO4 Battery Management System |  | Best Compact and Robust for Basic Protection | Voltage: 12V | Current: 100A | Cell Type: LiFePO4 | VIEW ON AMAZON | See Our Full Breakdown |
| DALY Smart BMS 4S-8S 150A with 1A Active Balancing RS485 CAN |  | Best for Multi-Configuration Flexibility and Smart Monitoring | Supported Configurations: 4S-8S | Max Current: 150A | Balancing Current: 1A | VIEW ON AMAZON | See Our Full Breakdown |
| DALY BMS 12V-24V 150A Built-in 1A Active Balancer Bluetooth RS485 CAN | | Best Overall for Versatile Home and Outdoor Use | Voltage Range: 12V-24V | Current: 150A | Active Balancing: Yes | VIEW ON AMAZON | See Our Full Breakdown |
| DALY Smart BMS 4S 12V 150A LiFePO4 with WiFi Bluetooth Module CAN RS485 |  | Best for Remote Monitoring and Smart Control | Battery Type: LiFePO4 | Voltage: 12V | Current: 150A | VIEW ON AMAZON | See Our Full Breakdown |
| 4S 100A 12V PCB BMS Protection Board with Balance for LiFePO4 Batteries |  | Best for Simple, Cost-Effective Cell Protection | Battery Type: LiFePO4 | Configuration: 4S | Current Rating: 100A | VIEW ON AMAZON | See Our Full Breakdown |
| Smart BMS 4S 12V LiFePO4 Lithium Battery Management PCB with Bluetooth and Programmable Protection (150A) |  | Best for DIYers and High-Current Applications | Cell Configuration: 4S | Voltage: 12.8V | Max Continuous Current: 150A | VIEW ON AMAZON | See Our Full Breakdown |
| DALY Smart BMS 4S 12V 100A LiFePO4 with WiFi Bluetooth Module CAN RS485 |  | Best for Multi-Protocol Compatibility and Remote Monitoring | Battery Type: LiFePO4 | Voltage: 12V | Capacity: 100A | VIEW ON AMAZON | See Our Full Breakdown |
| 4s lifepo4 bms 150a | Current | Protection Features | Voltage |
|---|---|---|---|
| DALY Smart BMS 12V-24V 150A Bu | 150A | Overcharge, overdischarge, overcurrent, short circuit, temperature | — |
| LiFePO4 4S 12V 150A Battery Ma | 150A | Over-charge, over-discharge, over-current, temperature, short circuit | 12V |
| DALY BMS 4S 12V 150A RS485 CAN | 150A | Cell balancing, low/high voltage cutoffs, temperature | — |
| DALY BMS 4S 12V 100A LiFePO4 B | 100A | — | 12V |
| DALY Smart BMS 4S-8S 150A with | — | — | — |
| DALY BMS 12V-24V 150A Built-in | 150A | Overcharge, overdischarge, overcurrent, short circuit, temperature, static electricity, disconnection, pre-charge | — |
| DALY Smart BMS 4S 12V 150A LiF | 150A | Overcharge, overdischarge, overcurrent, short circuit, temperature | 12V |
| 4S 100A 12V PCB BMS Protection | — | — | 12V |
| Smart BMS 4S 12V LiFePO4 Lithi | — | — | 12.8V |
| DALY Smart BMS 4S 12V 100A LiF | — | Overcharge, overdischarge, overcurrent, short circuit, temperature | 12V |
More Details on Our Top Picks
DALY Smart BMS 12V-24V 150A Built-in 1A Active Balancer
This DALY Smart BMS stands out for combining comprehensive protection with connectivity features, making it a solid choice for a range of applications from energy storage to EVs. Compared with the DALY BMS 4S 12V 150A RS485, it offers Bluetooth app control, providing more user-friendly monitoring. However, its slightly lower customer rating suggests some users find it less reliable over time, and the lack of detailed long-term feedback is a concern. Its support for 4S to 8S configurations offers flexibility, but the limited warranty period of 3 years may be a drawback for those seeking extended coverage.
Pros:- Provides extensive protection features including overcharge, overdischarge, and temperature safeguards
- Bluetooth app connectivity for real-time monitoring and control
- Supports multiple configurations from 4S to 8S for versatile use
Cons:- Customer ratings below 4 stars indicate mixed reviews on reliability
- Limited long-term durability data available
Best for: Buyers seeking a flexible, monitored BMS for various battery pack sizes with easy mobile access
Not ideal for: Users who prioritize long-term durability and extensive user reviews over connectivity features
- Model Number:100BALANCE-150A
- Battery Voltage:12V-24V
- Current:150A
- Built-in Balancer:Yes
- Protection Features:Overcharge, overdischarge, overcurrent, short circuit, temperature
- Compatibility:4S, 6S, 7S, 8S
Our verdict“This model is best suited for users who want flexible battery setup options with remote monitoring capabilities.”
LiFePO4 4S 12V 150A Battery Management System with Balance Leads
This BMS excels in rugged environments, offering waterproof, dustproof, and shockproof construction, making it ideal for outdoor or harsh conditions. Unlike the DALY BMS 4S 12V 150A RS485, it requires more technical installation knowledge but offers reliable protection over long-term use. Its focus on durability makes it less flexible in configuration—limited strictly to 4S packs—but provides strong protection against environmental factors. For those needing a tough, weather-resistant solution, it’s a compelling choice, though its setup complexity can be a hurdle for newcomers.
Pros:- Highly durable waterproof, dustproof, and shockproof design
- Provides comprehensive protections including overcharge, over-discharge, and temperature
- Low power consumption extends battery lifespan
Cons:- Requires technical skill to install properly
- Limited to 4S configurations, restricting flexibility
Best for: Individuals installing battery packs outdoors or in challenging environments who prioritize durability
Not ideal for: Beginners or those needing multi-configuration support beyond 4S packs
- Voltage:12V
- Current:150A
- Cells:4S
- Protection features:Over-charge, over-discharge, over-current, temperature, short circuit
- Temperature range:-20°C to 70°C
- Material:High anti-corrosion, water-resistant coating
Our verdict“This BMS is perfect for users needing a rugged, long-lasting solution in demanding environments but not for those seeking multi-configuration versatility.”
DALY BMS 4S 12V 150A RS485 CAN with 3-inch Display, WiFi & Bluetooth
This DALY BMS offers a comprehensive package with cell balancing, voltage cutoffs, and temperature protection, combined with a user-friendly 3-inch display. Its remote monitoring via Bluetooth and WiFi makes it ideal for DIY projects or complex power setups. Compared to the simpler DALY BMS 12V-24V 150A, this model provides more detailed control and customization options, though it demands some technical skills for installation. Its 5-year warranty and multiple certifications add reassurance for long-term projects, but the price may be higher for casual users.
Pros:- Includes a color touch screen for easy parameter adjustments
- Remote monitoring via Bluetooth and WiFi enhances user control
- Cell balancing and voltage protections extend battery life
Cons:- Requires technical knowledge for proper installation
- Limited to 4S 12V systems, reducing flexibility
Best for: DIY enthusiasts who want detailed control and remote access for their battery systems
Not ideal for: Beginners or users looking for a straightforward, plug-and-play solution with minimal configuration
- Battery Type:Lithium
- Configuration:4S 12V
- Current:150A
- Display Size:3 inches
- Protection Features:Cell balancing, low/high voltage cutoffs, temperature
- Connectivity:RS485 CAN, WiFi, Bluetooth
Our verdict“Ideal for users comfortable with setup and seeking detailed management features for their 4S battery packs.”
DALY BMS 4S 12V 100A LiFePO4 Battery Management System
This smaller, 100A BMS is well-suited for compact battery packs or applications where space is limited, offering reliable protection without extra features. Unlike the 150A models, it lacks communication functions, making it less suitable for remote monitoring or complex management. Its robust dustproof, shockproof, and waterproof design guarantees durability in harsher environments, but the limited current capacity restricts its use to smaller or less demanding systems. It’s a straightforward choice for basic safety, though it falls short for advanced or scalable setups.
Pros:- Compact size for space-constrained applications
- Durable dustproof, shockproof, and waterproof construction
- Includes essential protections for safe operation
Cons:- No communication features for remote monitoring
- Limited to passive balancing with lower current (100A)
Best for: Users needing a compact, durable BMS for small-scale or simple LiFePO4 batteries
Not ideal for: Those requiring active balancing, remote monitoring, or higher current capacity
- Voltage:12V
- Current:100A
- Cell Type:LiFePO4
- Protection Functions:Over-charging, over-discharging, over-current, temperature, short-circuit
- Size:Smaller
- Features:Pre-charging, passive balancing 100mA
Our verdict“This BMS provides solid basic protection in a compact form, best for small or straightforward battery setups without complex management needs.”
DALY Smart BMS 4S-8S 150A with 1A Active Balancing RS485 CAN
This BMS supports a range of 4S to 8S configurations, making it adaptable for various battery setups. Its active balancing and Bluetooth/Wi-Fi monitoring offer extended battery life and real-time performance insights, similar to the DALY BMS 12V-24V 150A but with added flexibility in pack size. The inclusion of multiple communication interfaces makes it suitable for more complex or scalable systems. However, it requires app setup for full functionality and is limited to 8S max, which could be restrictive for larger packs. It’s an excellent choice for those needing multi-configuration support with smart features.
Pros:- Supports a wide range of configurations from 4S to 8S
- Active balancing improves battery lifespan
- Wireless monitoring via app and cloud enhances management
Cons:- Requires app installation and setup for full use
- Limited to 8S pack configurations
Best for: Battery builders and power system developers who need flexible sizing and remote monitoring capabilities
Not ideal for: Users with fixed, small, 4S-only systems or those seeking plug-and-play simplicity
- Supported Configurations:4S-8S
- Max Current:150A
- Balancing Current:1A
- Battery Types:LiFePO4, Li-ion, LTO
- Connectivity:Bluetooth, Wi-Fi, RS485, CAN
- Warranty:18 months
Our verdict“This BMS is well-suited for users requiring adaptable system sizes with active balancing and remote management features.”
DALY BMS 12V-24V 150A Built-in 1A Active Balancer Bluetooth RS485 CAN
This BMS stands out for its flexible voltage support from 12V to 24V and robust active balancing, making it suitable for a variety of applications such as home energy storage, RVs, and electric motors. Compared with the DALY Smart BMS 4S 12V 150A, it offers broader voltage compatibility, though it doesn’t include Wi-Fi connectivity, limiting remote control options. Its sealed, potting process enhances durability against outdoor elements, but the lack of detailed protocol support could cause integration challenges with some inverter systems. This pick is ideal for users needing a durable, all-rounder BMS with automatic detection features and local app monitoring.
Pros:- Supports real-time app monitoring via Bluetooth
- Provides comprehensive protection against common battery issues
- Easy to install with automatic detection of battery configurations
- Water and dust resistant for outdoor durability
Cons:- Requires compatible inverter protocols for seamless communication
- Limited detailed specifications on compatibility with all battery types
Best for: Home energy systems, RV owners, and electric vehicle enthusiasts seeking a durable, versatile BMS with active balancing
Not ideal for: Users needing advanced remote control via Wi-Fi or detailed protocol compatibility for complex systems
- Voltage Range:12V-24V
- Current:150A
- Active Balancing:Yes
- Bluetooth:Built-in
- Protection Features:Overcharge, overdischarge, overcurrent, short circuit, temperature, static electricity, disconnection, pre-charge
- Water/Dust Resistance:Sealed with potting process
- Pre-charge Circuit:22,000μF
- Application:Home storage, RVs, electric motors
Our verdict“This model suits those who need a reliable, versatile BMS with rugged outdoor features and broad voltage support.”
DALY Smart BMS 4S 12V 150A LiFePO4 with WiFi Bluetooth Module CAN RS485
This BMS excels in offering comprehensive safety protections along with wireless connectivity options, including Bluetooth and Wi-Fi, enabling remote monitoring and parameter adjustment via mobile apps or PC. It surpasses the 4S 100A PCB BMS Protection Board by adding wireless features, although it remains limited to 4S configurations. The 3-year warranty and included components simplify installation, but the requirement of a Wi-Fi network may complicate setups where network access is unstable. This option is well-suited for DIYers and users who value remote management and detailed monitoring.
Pros:- Provides comprehensive safety protections for batteries
- Wireless connectivity allows remote monitoring and control
- Easy installation with all necessary components included
- 3-year warranty for peace of mind
Cons:- Requires Wi-Fi router for long-distance control
- Limited to 4S battery configurations
- Potential complexity for users unfamiliar with electronics
Best for: DIY hobbyists and remote-controlled system users who want detailed battery management with easy wireless access
Not ideal for: Users without stable Wi-Fi or those needing higher voltage support beyond 4S
- Battery Type:LiFePO4
- Voltage:12V
- Current:150A
- Number of Cells:4S
- Connectivity:Bluetooth, Wi-Fi, CAN, RS485
- Protection Features:Overcharge, overdischarge, overcurrent, short circuit, temperature
- Warranty:3 years
Our verdict“Ideal for tech-savvy DIYers wanting advanced remote features and safety protections in a compact BMS.”
4S 100A 12V PCB BMS Protection Board with Balance for LiFePO4 Batteries
This PCB-based protection board offers essential safety features for 12V LiFePO4 packs, including overcharge, overdischarge, and overcurrent protections, with the added benefit of balancing to extend overall battery life. Compared with the more feature-rich DALY BMS 12V-24V 150A, it’s more affordable and straightforward but lacks active balancing and remote monitoring options. Its wiring simplicity makes it suitable for DIY projects, though it’s less adaptable to complex setups. This board is most appropriate for users who prioritize basic protection at a lower cost.
Pros:- Provides comprehensive protection for LiFePO4 batteries
- Includes balancing function to extend battery lifespan
- Easy to install with pre-wired connections
- Stable performance with safety features
Cons:- Limited to 4-series battery configurations
- Less suitable for complex or high-current systems
Best for: DIY enthusiasts building simple 12V LiFePO4 packs needing reliable protection and balancing
Not ideal for: High-current applications or users seeking remote monitoring features
- Battery Type:LiFePO4
- Configuration:4S
- Current Rating:100A
- Voltage:12V
- Wiring:5P-250mm wires
Our verdict“A solid choice for basic protection and balancing in straightforward 12V LiFePO4 setups.”
Smart BMS 4S 12V LiFePO4 Lithium Battery Management PCB with Bluetooth and Programmable Protection (150A)
This fully programmable BMS supports 4S 12V LiFePO4 packs with Bluetooth connectivity for wireless monitoring and configuration, making it ideal for DIY projects and high-current setups. It surpasses basic protection boards like the 4S 100A PCB BMS by offering full programmability and app control, though its setup can be complex for those unfamiliar with electronics. Its size and features make it suitable for users comfortable with technical adjustments, especially in custom battery packs requiring precise control.
Pros:- Wireless Bluetooth monitoring via mobile apps
- Fully programmable with multiple protective functions
- Suitable for high-current applications
- Includes terminals for easy wiring
Cons:- Complex setup may require technical knowledge
- Limited detailed user reviews
- Size may be large for compact projects
Best for: Experienced DIYers and high-current battery builders needing programmability and remote control
Not ideal for: Beginners or users seeking plug-and-play solutions with minimal setup
- Cell Configuration:4S
- Voltage:12.8V
- Max Continuous Current:150A
- Dimensions:138 x 102 x 17 mm
- Protection Functions:Overcharge, over-discharge, over-current, short circuit, temperature
- Bluetooth:Yes
- App Compatibility:iOS and Android
Our verdict“Best suited for experienced builders who want custom, remotely monitored battery management in high-current applications.”
DALY Smart BMS 4S 12V 100A LiFePO4 with WiFi Bluetooth Module CAN RS485
This DALY Smart BMS offers a comprehensive package, supporting Bluetooth, Wi-Fi, CAN, and RS485, which makes it highly adaptable for various energy storage and mobility applications. Unlike the more limited 4S 100A PCB BMS Protection Board, it provides remote monitoring and control across multiple communication protocols, though it has a lower customer rating indicating mixed experiences. Its extensive compatibility makes it ideal for users managing complex systems with multiple batteries and communication needs, but setup may be more involved.
Pros:- Supports multiple communication protocols including Bluetooth, Wi-Fi, CAN, RS485
- Provides comprehensive safety features
- Supports remote monitoring and control
- Compatible with parallel batteries
Cons:- Customer rating of 3.8/5 indicates inconsistent user experiences
- Requires Wi-Fi for long-distance control, which could be inconvenient
Best for: System integrators and advanced DIYers managing multi-battery setups with diverse communication requirements
Not ideal for: Casual users or those with simple 4S configurations needing straightforward protection
- Battery Type:LiFePO4
- Voltage:12V
- Capacity:100A
- Number of Cells:4S
- Protection Features:Overcharge, overdischarge, overcurrent, short circuit, temperature
- Connectivity:Bluetooth, Wi-Fi, CAN, RS485
- Warranty:3 years
Our verdict“Designed for complex systems needing flexible communication options and remote management capabilities.”
How We Picked
The products were evaluated based on several criteria: performance at 150A continuous current, build quality, feature set including balancing methods and communication interfaces, ease of installation, and overall value. Reliability and user reviews also played a role in assessing durability and ease of use. The ranking reflects a balance between advanced features for experienced users and simplicity for beginners, aiming to guide different types of buyers toward the best fit for their needs.| 4s lifepo4 bms 150a | Protection Features |
|---|---|
| DALY Smart BMS 12V-24V 150A Bu | Overcharge, overdischarge, overcurrent, short circuit, temperature |
| LiFePO4 4S 12V 150A Battery Ma | Over-charge, over-discharge, over-current, temperature, short circuit |
| DALY BMS 4S 12V 150A RS485 CAN | Cell balancing, low/high voltage cutoffs, temperature |
| DALY BMS 4S 12V 100A LiFePO4 B | — |
| DALY Smart BMS 4S-8S 150A with | — |
| DALY BMS 12V-24V 150A Built-in | Overcharge, overdischarge, overcurrent, short circuit, temperature, static electricity, disconnection, pre-charge |
| DALY Smart BMS 4S 12V 150A LiF | Overcharge, overdischarge, overcurrent, short circuit, temperature |
| 4S 100A 12V PCB BMS Protection | — |
| Smart BMS 4S 12V LiFePO4 Lithi | — |
| DALY Smart BMS 4S 12V 100A LiF | Overcharge, overdischarge, overcurrent, short circuit, temperature |
Factors to Consider When Choosing 4s Lifepo4 Bms 150a
When selecting a 4s LiFePO4 BMS rated at 150A, it’s important to consider several factors beyond just the current rating. Compatibility with your battery pack and future expandability can affect long-term performance. Features like active balancing help maintain cell health, but may come with higher costs. Communication interfaces like Bluetooth or CAN bus facilitate system monitoring and troubleshooting, especially in complex setups. Ease of installation and build quality influence long-term reliability. Finally, consider your budget and specific application requirements to find a BMS that offers the best overall value.Performance and Current Rating
While 150A is the standard rating here, understanding the continuous versus peak current capabilities is key. Overestimating your needs can lead to unnecessary costs, while underestimating can cause system failures or shortened battery life. Ensuring the BMS can handle your application’s maximum current draw without overheating or shutting down is essential for safety and longevity.
Balancing Features
Active balancing helps keep all cells at an even voltage, which extends battery lifespan and enhances safety. Passive balancing is cheaper but slower and less effective in the long run. Consider whether the BMS offers active balancing if you plan to use your battery pack heavily or over extended periods, as this investment can pay off through improved reliability.
Communication and Monitoring
Features like Bluetooth, WiFi, or CAN bus connectivity allow real-time monitoring of voltage, current, and temperature. These are invaluable for troubleshooting, especially in larger or more complex systems. However, added communication features often increase costs and complexity, so evaluate whether these extras match your technical comfort level and application needs.
Ease of Installation and Build Quality
High-quality BMS units tend to offer better connectors, more durable circuit boards, and clearer wiring diagrams, reducing installation frustration. Cheaper options may save money upfront but could require more maintenance or pose reliability risks. For DIY enthusiasts or critical applications, investing in a well-made BMS can save time and prevent future headaches.
Price and Additional Features
Price often correlates with added features such as displays, smart connectivity, or advanced balancing. Decide which features are necessary for your project—if you only need basic protection, a simpler BMS might suffice. For more complex or long-term setups, paying extra for a feature-rich model can provide better performance and peace of mind.
Frequently Asked Questions
Can I upgrade my existing 4s BMS to a 150A model?
Upgrading to a 150A BMS depends on your current battery configuration and wiring compatibility. You should ensure the new BMS fits physically and matches the voltage and current specifications of your setup. Compatibility with your existing wiring and connectors is crucial to avoid potential damage. Also, consider whether your system’s wiring can handle the higher current capacity safely. Consulting the manufacturer’s documentation or a professional can help prevent costly mistakes.
Is active balancing necessary for a 4s LiFePO4 pack?
Active balancing offers significant benefits in maintaining cell health over time, especially for larger or frequently used packs. It helps prevent cell imbalance, which can reduce capacity and shorten lifespan. While passive balancing might be sufficient for small, infrequently used packs, investing in active balancing is advisable for long-term reliability and performance. Otherwise, you might encounter uneven aging and capacity loss as your pack ages.
How important are communication features like Bluetooth or CAN bus?
Communication features are highly valuable if you need real-time monitoring or remote troubleshooting, especially in complex or critical systems. Bluetooth and WiFi enable easy access via apps, while CAN bus supports integration with other vehicle systems. However, they add complexity and cost, so evaluate if these features align with your technical skills and project needs. For simple, standalone applications, basic BMS functions without communication are often enough.
What should I prioritize if I want a durable BMS for outdoor use?
In outdoor or harsh environments, look for BMS units with robust enclosures, moisture resistance, and high-quality connectors. A BMS rated for environmental durability reduces the risk of corrosion and electrical failure. Additionally, models with good thermal management can prevent overheating under high loads or in hot climates. Investing in a weatherproof or sealed BMS improves long-term reliability in outdoor applications.
Is it worth paying extra for a BMS with a display or smart features?
Adding a display or smart features can significantly enhance system monitoring, making it easier to spot issues early and maintain your battery pack. However, these features usually come at a higher cost and complexity. If you’re comfortable with electronics and need detailed insights, the investment is worthwhile. For simple or budget-conscious projects, a basic BMS without these extras can still provide essential protection without unnecessary expense.
Conclusion
For users prioritizing overall reliability and smart features, the DALY Smart BMS 12V-24V 150A offers a balanced mix of active balancing, connectivity, and durability, making it the best overall choice. Budget-conscious buyers or those with straightforward needs might prefer the LiFePO4 4S 12V 150A BMS for its simplicity and affordability. For more advanced, monitored setups, models with Bluetooth or CAN bus, like the DALY BMS 4S 12V 150A RS485 CAN with Display, are excellent options. Beginners or casual hobbyists should consider easier-to-install models with clear instructions, while professional or long-term installations benefit from investing in higher-end, feature-rich BMS units.
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