Introducing the Upcoming CMPower 450Ah LiFePO4 Battery
High-Capacity Power for Marine & Off-Grid Applications
Custom Marine Products is preparing to launch the next generation of CMPower LiFePO4 batteries, designed for demanding marine, van, and off-grid power systems that require high capacity, high current capability, advanced system integration, and long-term reliability.
The upcoming CMPower 450Ah battery combines advanced semi-solid state LiFePO4 cell technology with a field-replaceable Battery Management System (BMS), integrated heating, Victron compatibility, and marine-ready communication features in an industry-standard Group 8D footprint.
Just a few years ago, this amount of lithium power would have required significantly more space. Comparable AGM battery systems can require roughly three times the space and up to four times the weight.
The upcoming CMPower 450Ah battery combines advanced semi-solid state LiFePO4 cell technology with a field-replaceable Battery Management System (BMS), integrated heating, Victron compatibility, and marine-ready communication features in an industry-standard Group 8D footprint.
Just a few years ago, this amount of lithium power would have required significantly more space. Comparable AGM battery systems can require roughly three times the space and up to four times the weight.
Why This Battery Matters
Modern marine and off-grid systems continue to demand:
- Larger inverter loads
- Longer runtime
- Faster charging capability
- Better system monitoring
- Higher reliability
Key Features
Semi-Solid State LiFePO4 Cell Technology
Compared to conventional lithium battery designs, semi-solid state cells offer:
- Improved thermal stability
- Lower operating temperatures
- Enhanced safety
- Longer cycle life
- High-performance discharge capability
Field Replaceable Smart BMS
Unlike many sealed lithium batteries, this design allows access to the internal Battery Management System (BMS).
Practical advantages include:
Practical advantages include:
- Easier troubleshooting
- Reduced downtime
- Long-term serviceability
- Ability to carry a spare BMS during extended trips
- Over-charge
- Over-discharge
- Over-current
- Short circuit
- High & low temperature disconnects
High Current Performance
Designed for demanding marine and inverter applications.
Performance Specifications
Performance Specifications
- 300A continuous discharge
- 500A peak discharge (30 seconds)
- 300A continuous charge
- 400A peak charge (5 seconds)
Integrated Heating System
The internal heating system helps support charging in cold weather conditions.
When battery temperature is below 0°C (32°F), charger power is redirected to warm the battery before charging begins.
When battery temperature is below 0°C (32°F), charger power is redirected to warm the battery before charging begins.
Marine & Off-Grid System Integration
Features include:
- Bluetooth monitoring (iOS & Android)
- NMEA2000 communication
- Victron communication compatibility
- Optional WiFi capability
- Built-in State of Charge meter
- Integrated on/off button
Expandable System Design
The CMPower 450Ah battery supports:
- Up to 16 batteries in parallel
- Up to 4 batteries in series
- Battery-to-battery balancing
- Cruising boats
- Offshore systems
- Large inverter installations
- Van and mobile power systems
- High-capacity off-grid applications
Preliminary Technical Specifications
| Feature | Specification |
|---|---|
| Technology | LiFePO4 Semi-Solid State Cell technology for enhanced safety and longevity |
| Battery Capacity | 450Ah |
| Battery Size | Group 8D |
| Performance | 300A max continuous discharge (500A for 30s) and 300A max continuous charge (400A for 5s) |
| Durability | IP65 rated (dust and water resistant) |
| Temperature Management | Internal heating for charging below 0°C; high/low temperature disconnects |
| Connectivity | Bluetooth (iOS/Android), NMEA2000 connection, and optional WiFi for cloud communication |
| Compatibility | Victron communication compatible |
| Scalability | Supports up to 16 batteries in parallel and up to 4 in series; includes battery-to-battery balancing |
| BMS | Built-in Smart Battery Management System (field replaceable) with over-charge, over-discharge, over-current, and short-circuit protection. BMS Made by Daly. |
| User Interface | Built-in State of Charge meter and on/off button |
| Certification | UL1973 and IEC 62619 certified cells |
| Longevity | 4,000+ cycle life; maintenance-free |
| Installation | Easy-to-install secure mounting plate included. *T-class fuse and holder sold separately |
Expected Availability
The CMPower 450Ah LiFePO4 battery is currently in pre-launch development and expected to be available in 8-10 weeks.
Explore the Early Access Page
For the latest updates, launch information, and early access notifications:
→ [View the CMPower 450Ah Early Access Page]
→ [View the CMPower 450Ah Early Access Page]