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HECKMAN MLFP51320A — front view
SKU
MLFP51320A
Brand
HECKMAN
Datasheet (PDF)

HECKMAN MLFP51320A LiFePO4 Battery (15.36 kWh)

The HECKMAN MLFP51320A delivers 15.36 kWh per 51.2 V module—reducing parallel block count versus 5 kWh bricks when targeting 30–120 kWh LV storage behind Deye 12K/20K hybrids.

Tech Specs

HECKMAN MLFP51320A LiFePO4 Battery (15.36 kWh) — Tech Specs
Parameter MLFP51320Af200 MLFP51320A/100 MLFP51320A/40
Technical Data
Brand HECKMAN
Model MLFP51320Af200 MLFP51320A/100 MLFP51320A/40
Nominal Voltage 51 V
Cell Capacity 314 Ah
Number of Cells 16S
Cell Technology LiFePO4
Cell Grade Grade A
Nominal Capacity 15000 Wh / 15 kWh
Usable Capacity 14250 Wh / 14.25 kWh
Nominal Charge/Discharge Power 9.72 kW 4.86 kW 1.94 kW
Efficiency 95%
Max. Charge/Discharge Current <= 200A (1C) <= 100A (0.5C) <= 40A (0.2C)
Recommended Charging Current 60A (0.3C) 60A (0.3C) 40A (0.3C)
Discharge Overcurrent Protection 210A alarm, 220A switch-off 110A alarm, 120A switch-off 110A alarm, 120A switch-off
Charge Overcurrent Protection 200A alarm, 220A switch-off 100A alarm, 120A switch-off 100A alarm, 120A switch-off
Module Expansion Parallel up to 16 units (240 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) 450 x 229 x 830 mm
Weight 125 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

Higher per-module energy lowers connector count and BMS polling overhead, but increases single-unit weight and crane requirements during install. Parallel expansion still respects 51.2 V architecture—multiple MLFP units on combiner busbars, not series for HV.

Ideal for light commercial peak shaving where 2× MLFP (~30 kWh) covers evening peak after solar fade, or 4× approaches 60 kWh before HV economics dominate. Cross-parallel wiring and torque schedules are mandatory—under-engineered buswork shows up as cell imbalance months later.

Communicates on CAN to Deye Master inverter BMS port. Not compatible with SG01HP3 HV inverters—transition to RHFP when DC bus must exceed 200 V.

Ideal for

  • ✓ Commercial LV storage without HV switchgear approval yet
  • ✓ Projects targeting 30–240 kWh on 51.2 V parallel
  • ✓ Engineers minimizing module count vs 5 kWh RLFP farms

Compatible inverters

Technical FAQ

Why not use five RLFP 5 kWh instead?
Five modules add five BMS nodes and five fuse points—MLFP consolidates when floor loading allows heavier units.
Maximum parallel?
Catalog scaling references 240+ kWh parallel—confirm busbar ampacity and inverter charge limits with simulation.
Single-phase homes?
Use with SG03LP1 if total charge current fits; large MLFP count usually pairs with three-phase 12K/20K hybrids.
HV migration path?
When LV parallel becomes unwieldy, redesign around RHFP HV strings and SG01HP3—MLFP is not forward-compatible to HV.
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