Balancell P27


Voltage: 52V

Energy: 14.5kWh

Capacity: 280Ah

Model: P27

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Battery Specifications and Accountability
Nominal Energy | 14.5kWh | Voltage | 52V | Nominal Amp Hours | 280Ah | Model Number | P27
Real Amp hour Capacity This is viewable and measurable in the battery history for every discharge throughout lifetime.
Cell Cycle life 3500 cycles at 100% DOD until 80% nominal capacity
History and Data logging All data is recorded for every minute up to 30 years internally (and sent to gateway if online).
Energy Output Logging The Total Energy Output in kWh, or total lifetime operating hours are all recorded, and visible online
Guarantee | Energy output – 30 000 kWh | Calendar time – 10 yrs |
Guarantee – Cycles Unlimited cycles up either Total Energy Output or Calendar time, which ever comes first
Recycling – End of life EnviroServe – Our partner recycling company
Discharge Limits – (Voltage & Current) Battery Protection Notes
Continuous Discharge current 270A 1C continuous
Surge Discharge Current – 30 seconds 400A 3C transient. Typically repeated for every lift or peak load.
Electronic Current trip limit – analogue 550A If the electronic current limit option is enabled – Note 1*
Electronic trip Retry time – analogue Time taken after current trip to retry connection
Pre-Charge current limit – Note 1* 550A Automatically provided if electronic current limit is enabled
Electronic Overload – Digital Optional with either, I²t , max current, or Custom profiles
Internal Battery Fuse 400A I²t = 610 000 A
Minimum battery voltage 47.2V Battery will cutout here, regardless of indicated SOC
ABSOLUTE Minimum Battery Voltage 43.4V Internal electronics Disabled! Please see battery protection.
Note 1*. Electronic current limit is optional and adjustable between 500-1000A. It will act as a automatic pre-charge for connection to inverters. For motive applications, in particular old lead machines, pre-charge or current limit prevents startup, and not desirable.
Charge Limits – (and charger settings)
Maximum Continuous Charging Current 200A Preferred range is 130A to 200A, set for constant current CC.
End of Charge voltage 56V 55.6V to 56.0V max set as endpoint CV voltage
Balancing charge voltage or current 56.2V 56.0V-56.3V OR charge at constant current (CC) of 400mA
Charger voltage range 48V Charger voltage must be within normal 48V limits.
Battery maximum voltage self cut out 56.4V Battery will cutout, preventing further charging, NOTE 3*.
Peak transient charger voltage 100V *Peak transient voltage after battery self disconnects
Charger Lead Inductive Energy 75J NOTE 4*. However, Typical 2m length lead installations are of no concern.
NOTE 3*. If battery self cuts out from over voltage it will still be available for discharge through reverse diode.

NOTE 4*. This is the maximum charger lead Inductive energy battery cutout can absorb ( 1/2 I²L < 75J ).

Mechanical Design
| Length – 1217 mm | Width – 186 mm | Height – 302 mm | Mass – 100 kg
| Specific (Gravimetric) Energy Density – 140 Wh/kg | Volumetric Energy Density – 221 Wh/l |
| Cell insulation – Standard with Additional PET 300 micron cover added to all cells for safety and vibration tolerance.
| Cell compression – ~ 3000N | G-shock tolerance – > 5 times IEC 61485 | Environmental – IP61 |
| Interlinks, cell to cell , cell to terminal – Flexible laminated tin plated copper |
Communication Options
GSM Global sim with lifetime connectivity (15yrs), Standard on Industrial Motive Batteries (2G, 3G or NB-IoT)
Serial RS232 standard, (default connection to SOC display), RS485 converter optional. Isolated to 1000V
CANbus CANOpen standard, 5V@200mA available, OEM comms on request, MODBUS optional. Isolated to 2500V
Wifi Standard
Certification and Standards
Cell Certifications GB Certified to – GB31484, GB31485, GB31486, UL1973, MSDS UN38.3
Cell Manufacturing ISO Certified to – ISO9001, ISO14001, TS16949
Battery Manufacturing ISO In process – ISO9001 certification
Battery Electromagnetic Compatibility CE Certified to – EN 301 489-1: V2.2.3, EN 301 489-52: V1.1.0, EN / IEC 61326-1
Battery Standards IEC Designed to meet – IEC 62485-6, IEC 63056, IEC 61619, IEC 62660-2
Battery Standards UL Designed to meet – UL 2580
OLED SoC% Display 0-100%, Error msgs, Power & Charging LEDs. Configurable Buzzer at low SOC
Fast Charge Safety Disconnect Plug Fast charging point safety forklift disconnect to prevent driving away with charger connected
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