SKU: RLFP-51.2V-100Ah
Brand: HECKMAN

HECKMAN RLFP-51.2V-100Ah LiFePO4 Battery (5.12 kWh)

Q: Parallel limit?

Up to 16 RLFP modules in approved parallel configurations—verify aggregate current against inverter charge/discharge limits.

Q: Wall vs rack?

RLFP is rack-oriented; WLFP adds LCD and wall-mount ergonomics for the same 5.12 kWh class.

Q: HV compatibility?

No—51.2 V parallel only. HV Deye requires RHFP series strings.

Q: Cross-wiring rule?

For parallel strings without busbars, connect positive to first module and negative to last module to balance charge paths—mirror Deye 12K/20K manuals.

The HECKMAN RLFP-51.2V-100Ah is a rack-format 51.2 V LiFePO₄ module delivering 5.12 kWh usable per block—designed for parallel expansion up to 16 units on commercial LV hybrid busbars.

Tech Specs

HECKMAN RLFP-51.2V-100Ah LiFePO4 Battery (5.12 kWh) — Tech Specs
Parameter	Value
Technical Data
Brand	HECKMAN
Model	RLFP51100A/100
Nominal Voltage	51 V
Cell Capacity	100 Ah
Number of Cells	16S
Cell Technology	LiFePO4
Cell Grade	Grade A
Nominal Capacity	5120 Wh / 5.12 kWh
Usable Capacity	4860 Wh / 4.86 kWh
Nominal Charge/Discharge Power	4.86 kW
Efficiency	95%
Max. Charge/Discharge Current	<= 100A (1C)
Recommended Charging Current	30A (0.3C)
Discharge Overcurrent Protection	105A alarm, 110A switch-off
Charge Overcurrent Protection	100A alarm, 110A switch-off
Module Expansion	Parallel up to 16 units (81.92 kWh)
Communication	CAN/RS-485
SoC Indicator	LED
Main Switch	Yes
EPO - Fire Protection	Yes
Operating Indicator	LED
Operating Mode Selection	DIP switch
Dimensions (W x D x H)	Rack 3U — 482 x 485 x 133 mm
Weight	49 kg
Noise Level	0 dB
Operating Temperature	-15°C to 60°C
Charging Temperature	0°C to 55°C
Relative Humidity	≤90% (40°C ± 2°C)
IP Rating	IP21
Warranty	10 years

Rack mounting (RLFP) prioritizes density in IT-style cabinets or custom battery rooms versus wall aesthetics. Each module includes integrated BMS reporting SOC, voltage, and temperature over CAN to Deye SG03LP1/SG04LP3/SG05LP3 masters. Parallel expansion increases amp-hour capacity while holding 51.2 V nominal—charge controllers manage current sharing when cross-wired per Deye guidelines.

LiFePO₄ chemistry trades energy density for cycle life and thermal stability—appropriate for daily peak-shaving cycles at 0.35 ₾/kWh. Install in ventilated enclosures; while safer than NMC, high continuous charge/discharge still demands airflow and torque-checked busbolts.

Pair with three-phase LV hybrids from 3.6 kW through 20 kW. Do not series-connect for HV inverters—use RHFP05100A instead. For wall-mounted residential aesthetics, specify WLFP variant.

Ideal for

✓ Commercial LV rooms needing rack density
✓ Systems targeting 20–80 kWh via parallel 5 kWh bricks
✓ Installers already commissioning Deye CAN BMS on LP3 hybrids

Compatible inverters

Technical FAQ

Parallel limit?

Up to 16 RLFP modules in approved parallel configurations—verify aggregate current against inverter charge/discharge limits.

Wall vs rack?

RLFP is rack-oriented; WLFP adds LCD and wall-mount ergonomics for the same 5.12 kWh class.

HV compatibility?

No—51.2 V parallel only. HV Deye requires RHFP series strings.

Cross-wiring rule?

For parallel strings without busbars, connect positive to first module and negative to last module to balance charge paths—mirror Deye 12K/20K manuals.

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