Lithium Power Plus 24V 5.5kWh


Why lithium?

High quality 12 V Lithium Iron Phosphate (LiFePO4) cells are the basis for WhisperPower’s new lithium storage systems. The new lithium Power Plus Battery Racks are a sustainable and highly energy dense solution to store electrical energy for use “on demand”. Due to the specific characteristics of the Whis- perPower LFP ferro lithium batteries, the battery pack(s) can be charged and discharged at high amperes.

The added value of WhisperPower

All Lithium battery solutions can be supplied just “as a bat- tery”. However, we offer our customers a total solution that eliminates the risk of the user’s battery not being charged, discharged or monitored properly. The system approach goes beyond simply supplying a WhisperPower battery charger or combination inverter/charger. If required, we can supply a complete diesel fuel based fast charge system in combination with the Lithium Power Plus rack with integrated BMS, DC bus bar (s) distribution including fuses and an advanced monitor- ing system that monitors the behavior of the cells inside the battery down to the cell level: WhisperCare.

Sustainable and cleaner for the user

Further electrification to replace or supplement fossil power solutions reduces the carbon footprint on a substantial basis. In addition, large cost savings can be achieved because the fossil power system can be used much more efficiently.
A higher upfront investment is recouped within a short time.

Lithium Power Plus modular battery rack system

  • Light weight, modular rack design
  • For horizontal or vertical mounting
  • Pre-installed busbars and cabling
  • Ready-to-use, + and – ready to connect
  • Configurations from 12 – 800 VDC, up to 840 Ah
  • Advanced BMS integration with accurate battery monitoring
  • Real time and historical cloud-based surveillance (WhisperCare) (optional)
  • DNV type approval (optional)
  • Safe LiFePO4 chemistry, of the highest density

Added Value Services from WhisperPower

  • Battery System Design
  • Total Power System Design
  • Full integration of (fast) chargers, DC – AC inverters, solar power and back-up generators, all from one brand
  • Your perfect one stop shop, extended 5 years warranty
  • Service & support at location on a world wide base


40290223 Lithium Power Plus 24 V 5.5 kWh – Horizontal
40290203 Lithium Power Plus 24 V 5.5 kWh – Tower/Vertical
Chemistry LiFePO4
Module configuration (12 V module) 2s2p
Number of modules 4
Nominal voltage 24 V
Open circuit voltage 26,4 V
Nominal capacity 210 Ah
Nominal energy 5,5 kWh
Cycle Life DOD 80% >3500 cycles (at 1C charge / discharge, 80% DoD
Self discharge <3% per month
Weight modules (excel. aluminum cabinet), kg (lb) 40 (88.2)
Charge method CCCV
Maximum charge voltage 29,8 V
Recommended charge voltage 28,6 V
Recommended charge current 105 A (0.5 C)
Continuous charge current 210 A (1.0 C)
Discharge cut-off voltage 21,6V
Recommended discharge current 105 A (0.5C)
Maximum discharge current 210 A (1.0C)
Discharge pulse current 420 A (2.0C)
Fuse protection 400 A T-class
Power connections M10 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 480 x 280 x 465 (540)
Dimensions (l x w x h), inches 18,9 x 11 x 18,3 (21,3”)
Total weight module plus cabinet ±55-60 kg / 121-132 lbs
Series configuration Yes, up to 4 max
Parallel configuration Yes, up to 2 max
Redundant mode Yes, using double BIM
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%
Balancing Passive method
Battery Management System (BMS) External WP-BIM module
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


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