Lithium Power Plus 24 V – 420 Ah – 11.1 kWh modular battery rack. Contains 8 battery modules. Offers safe and space-saving energy storage, for use both on land and at sea. Advanced battery management with precise battery monitoring. DNV type approval is optional. Choice of horizontal and vertical casing.
This model is just an example of the extensive possibilities. Contact us for all custom options.
- Highly safe energy storage system
- Light weight modular rack design
- Horizontal or vertical mounting
- Optional pre-installed busbars and cabling
- Plug and play
- DNV type approval optional
- Safe LiFePO4/LFP chemistry with prismatic cells
Safe modular accuracy system
Perfect for power installations with an inverter up to 7 kW, for example in medium-sized yachts, mobile workshops, and RVs. Strong housing with aesthetically sleek looks. A very safe way of energy storage. The cabinet is screwed into the technical space, therefore no chance of sliding let alone falling over. No additional ventilation or cooling required. Advanced BMS system with precise battery monitoring through Whisper Interface Box WIB (not included). This ensures the modules charge and discharge equally.
Safety
- Safest and most reliable energy storage on the market
- Extinguishable with all common extinguishing methods including water
- Integrated safety measures
- No risk of thermal runaway
- Passive safety: even without electronics, the battery modules are safe


Lithium Battery with LiFePO4 Technology
This battery rack is equipped with 8 modules that deliver a capacity of 420 Ah and a total energy storage of 11.1 kWh at a voltage of 24 VDC. Guaranteed highest quality thanks to LiFePO4 chemistry with primary cells. LiFePO4 stands for lithium iron phosphate and is also known by the abbreviation LFP. This is the safest lithium technology ensuring a longer lifespan, improved discharge, and charging efficiency. This makes the battery perfectly suitable for maritime applications. Additionally, lithium is completely maintenance-free and lighter in weight compared to other technologies. Want to know more? Everything about this lithium technology and applications can be found on the lithium battery information pages: part 1 and part 2.
Outstanding Scalable Energy Solution
Our Lithium Power Plus modular battery racks are excellent scalable energy solutions ensuring high-performance output. This specific construction of the battery modules within the enclosure extends lifespan, reliability, and ensures stable energy delivery. The design process includes carefully balancing the charging and discharging of each module, which poses a challenge with individual modules and their wiring.
Custom Design
Besides the standard models in horizontal and vertical configurations, much more is possible. We are happy to design your enclosure custom, with or without integrated DC distribution and one or more Whisper Interface Box battery management systems. Want to know which configuration fits your situation? Inquire about the possibilities.
Product specifications
| ARTICLE NUMBER |
| 40290205 |
Lithium Power Plus 24 V 11.1 kWh – Tower/Vertical |
| TECHNICAL SPECIFICATIONS |
| Chemistry |
LiFePO4 |
| Module configuration (12 V module) |
2s4p |
| Number of modules |
8 |
| Nominal voltage |
24 V |
| Nominal energy |
11,1 kWh |
| Open circuit voltage |
26,4 V |
| Nominal capacity |
420 Ah |
| Cycle Life DOD 80% |
>3500 cycles (at 1C charge / discharge, 80% DoD |
| Self discharge |
<3% per month |
| Weight modules (excel. aluminum cabinet), kg (lb) |
80 (176.4) |
| DISCHARGE PARAMETERS |
| Discharge cut-off voltage |
21,6V |
| Recommended discharge current |
210 A (0.5C) |
| Maximum discharge current |
420 A (1.0C) |
| Discharge pulse current |
840 A (2.0C) |
| Fuse protection |
2* 400 A T-class |
| CHARGE PARAMETERS |
| Charge method |
CCCV |
| Maximum charge voltage |
29,8 V |
| Recommended charge voltage |
28,6 V |
| Recommended charge current |
210 A (0.5 C) |
| Continuous charge current |
420 A (1.0 C) |
| CONFIGURATION |
| Series configuration |
Yes, up to 4 max |
| Parallel configuration |
Yes, up to 2 max |
| Redundant mode |
Yes, using double BIM |
| ENVIRONMENTAL |
| Operating temperature charge |
0°C to 55 °C / 32°F to 131°F |
| Operating temperature discharge |
-20°C to 55°C / -4°F to 131°F |
| Storage temperature |
-20°C to 55°C / -4°F to 131°F |
| Humidity (Non-condensing) |
<95% |
| MECHANICAL |
| Power connections |
M1- stud, max 20NM |
| Cable connections |
Option: Top or Bottom |
| IP-Protection class |
IP 66 cell IP20 connection |
| Cooling |
Natural air convection |
| Module material |
PC-ABS, UL94-V0 |
| Battery case material |
Aluminium Powdercoat |
| Dimensions (l x w x h), mm |
870 x 280 x 465 (540) |
| Dimensions (l x w x h), inches |
34,3 x 11 x 18,3 (21,3”) |
| Total weight module plus cabinet |
±100-110 kg (220-243 lb.) |
| SAFETY |
| Battery Management System (BMS) |
External WP-BIM module |
| Balancing |
Passive method |
| Communication CAN-Bus |
whisperconnect/NMEA2000 |
| EMC: Emission |
EN-IEC 61000-6-3:2007/A1:2011/C11:2012 |
| EMC: Immunity |
EN-IEC 61000-6-1:2007 |
| Low voltage directive |
EN 60335-1:2012/AC:2014 |
| Certifications |
CE, FCC, UN 38.3, UL 1642 (Cells), UN ECE R10.06, EN/IEC 62620(ESTRIN) |
| Shipping classification |
UN3480 |