Battery Specifications


Voltage: 52V

Energy: 14kWh

Capacity: 270Ah

Model: P28

Battery Specifications and Accountability
Nominal Energy | 14kWh | Voltage | 52V | Nominal Amp Hours | 270Ah | Model Number | P28
Real Amp hour CapacityThis is viewable and measurable in the battery history for every discharge throughout lifetime.
Cell Cycle life3500 cycles at 100% DOD until 80% nominal capacity
History and Data loggingAll data is recorded for every minute up to 30 years internally (and sent to gateway if online).
Energy Output LoggingThe Total Energy Output in kWh, or total lifetime operating hours are all recorded, and visible online
Guarantee | Energy output - 28 000 kWh | Calendar time - 7 yrs | Operating Hours - 20 000 hrs - *If matched to machine |
Guarantee - CyclesUnlimited cycles up either Total Energy Output or Calendar time, which ever comes first
Recycling - End of lifeEnviroServe - Our partner recycling company
Discharge Limits - (Voltage & Current)BatteryProtection Notes
Continuous Discharge current270A1C continuous
Surge Discharge Current - 30 seconds800A3C transient. Typically repeated for every lift or peak load.
Electronic Current trip limit - analogue1000AIf the electronic current limit option is enabled - Note 1*
Electronic trip Retry time - analogue3msTime taken after current trip to retry connection
Pre-Charge current limit - Note 1*1000AAutomatically provided if electronic current limit is enabled
Electronic Overload - DigitalOptional with either, I²t , max current, or Custom profiles
Internal Battery Fuse400AI²t = 610 000 As
Minimum battery voltage47.2VBattery will cutout here, regardless of indicated SOC
ABSOLUTE Minimum Battery Voltage43.4VInternal 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 Current200APreferred range is 120A to 180A, set for constant current CC.
End of Charge voltage56V55.6V to 56.0V max set as endpoint CV voltage
Balancing charge voltage or current56.2V56.0V-56.3V OR charge at constant current (CC) of 400mA
Charger voltage range48VCharger voltage must be within normal 48V limits, 40V to 72V max.
Battery maximum voltage self cut out56.4VBattery will cutout, preventing further charging, NOTE 3*.
Peak transient charger voltage100V*Peak transient voltage after battery self disconnects
Charger Lead Inductive Energy75JNOTE 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 ).
Operating SOC and TemperatureMinimumMaximumNotes
Usable SOC range0%100%NOTE! battery Cutout can be configured from 0 - 25%
Recommended SOC range10%100%Preferred good practice to prevent cut out while in use.
Storage SOC20%100%NOTE! Battery should be fully charged before Storage.
SOC accuracy-0.1%+0.1%Typical accuracy in normal daily use
SOC daily drift-0.1%+0.1%Daily Drift while not in use. Will reset at Top or bottom of charge
Charging Temperature5°C55°CBattery cuts out at beyond these. Preferred range 10°C - 45°C
Discharging Temperature-15°C55°CBattery cuts out at beyond these. Preferred range 10°C - 45°C
Storage Temperature0°C25°CPreferred for optimum lifetime is 5-10°C
ProtectionIndividual CellBattery Level
Over VoltageDigitalAnalogue and Secondary Digital cutout
Over DischargeDigitalDigital SOC and Digital under voltage
Deep Over DischargeAnalogue cut out of internal electronics to prevent further discharge. NOTE 1*.
Over temperatureDigitalDigital and Secondary Analogue
Under temperatureDigitalDigital
Charge rateDigitalDigital
Short circuit 1*Optional* - Analogue electronic protection, 40ns response time, with automatic hiccup retry.
Short circuit 2Fuse is always installed on all batteries.
NOTE 1*. When the internal electronics are disabled, the battery enters a dormant state. In this state the battery will be inactive, not connected and not available for normal recharge or use. It can be recharged but it MUST be recharged with a constant current that must not exceed 500mA (450mA preferred) and voltage less than 65V (e.g. Balancell hockey PUK charger). If left for more than 6 months in this dormant state, then it should NOT be recharged and battery needs to be returned for a service and cell checkup.
Mechanical Design
| Length - 1190 mm | Width -216 mm | Height - 280 mm | Mass - 100 kg
| Specific (Gravimetric) Energy Density - 140 Wh/kg | Volumetric Energy Density - 195 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
GSMGlobal sim with lifetime connectivity (15yrs), Standard on Industrial Motive Batteries(2G, 3G or NB-IoT)
SerialRS232 standard, (default connection to SOC display), RS485 converter optional.Isolated to 1000V
CANbusCANOpen standard, 5V@200mA available, OEM comms on request, MODBUS optional.Isolated to 2500V
WifiStandard
Certification and Standards
Cell CertificationsGBCertified to - GB31484, GB31485, GB31486, UL1973, MSDS UN38.3
Cell ManufacturingISOCertified to - ISO9001, ISO14001, TS16949
Battery ManufacturingISOIn process - ISO9001 certification
Battery Electromagnetic CompatibilityCECertified to - EN 301 489-1: V2.2.3, EN 301 489-52: V1.1.0, EN / IEC 61326-1
Battery StandardsIECDesigned to meet - IEC 62485-6, IEC 63056, IEC 61619, IEC 62660-2
Battery StandardsULDesigned to meet - UL 2580
Ancillaries
OLED SoC% Display0-100%, Error msgs, Power & Charging LEDs. Configurable Buzzer at low SOC
Fast Charge Safety Disconnect PlugFast charging point safety forklift disconnect to prevent driving away with charger connected
3P charger
9kW - 26V, 39V, 52V
1P charger
3kW - 26V, 39V, 52V
Hockey PUK charger
400mA CC, For float charging, balancing, and recovery from a deep discharge dormant state

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