Rongkai Solar
LB-series | 100/230/300Ah 25.6/51.2V LiFePO4 solar storage battery
Storage Battery

LB-series | 100/230/300Ah 25.6/51.2V LiFePO4 solar storage battery

Optional communication protocol：Victron、 Pylon、Deye、SMA、Growatt、Goodwe、Voltronic,

Parallel communication，RS485, CAN and software monitor

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lb-series brochure.pdf (PDF brochure / document)
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Product Highlights

Key Features

Conventional interface
01

Conventional interface

Compatible with multiple communication interfaces

100% Brand New Grade A Cells
02

100% Brand New Grade A Cells

Uses high-quality Grade A lithium cells with full capacity, each equipped with a QR code for traceability and strict quality control.

LiFePO₄ Wall-Mounted Battery System
03

LiFePO₄ Wall-Mounted Battery System

Features complete certifications, 10-year service life, parallel function support, and customizable communication protocols.

Built-in Intelligent BMS Protection
04

Built-in Intelligent BMS Protection

Advanced BMS supports RS485/RS232/CAN and provides multi-layer protection including overcharge, over-discharge, short circuit, over-current, and high-temperature protection.

Home Energy Storage Backup System
05

Home Energy Storage Backup System

Automatically switches to battery power during grid outages, ensuring uninterrupted electricity for the home.

Supports Up to 15 Units in Parallel
06

Supports Up to 15 Units in Parallel

Allows parallel connection of up to 15 units, compatible with both new and old batteries, with optional support for lead-acid battery parallel setups.

Specifications

ModelsLB100AH/51.2VTALB230AH/51.2VLB300AH/51.2VLB100AH/25.6VLB230AH/25.6VLB300AH/25.6V
Available Capacity5120WH11776WH14336WH2560WH5888WH8038WH
Electrical Specifications
Cell ChemistryLiFePO4
Maximum Continuous Discharge Current100A100A\200A200A100A200A200A
Rated Voltage51.2V|DC25.6V|DC
Voltage Range43.2V-58.4V|DC21.6V-29.2V|DC
Maximum Output Power5120W5120W\10240W10240W2560W5120W
Charging Parameters
Maximum Charging Voltage58.4V±0.2V|DC29.2±0.2V|DC
Recommended Charging Voltage57.6V±0.2V|DC28.8±0.2V|DC
Recommended Charging Current50A100A\115A140A50A115A157A
Charging Current Limitation Function10A10A\20A20A10A20A
Power Consumption & Efficiency
Low Power ConsumptionWorking self-consumption ≤50mA, low-power mode ≤200uA
Battery depth of discharge (DOD)≥95%
Cycle life (standard charge/discharge at room temperature)≥5000 cycles≥5000 cycles≥5000 cycles≥5000 cycles≥5000 cycles≥5000 cycles
Protection Features
Long-delay Over-current Protection for Charge/DischargeBMS100: Alarm >105A, Protection >110A/1s BMS200: Alarm >205A, Protection >210A/1s
Instant Over-current Protection for DischargeBMS100:≥150A/100ms BMS200:≥250A/100ms
Over-voltage Protection RecoveryDischarge current >1A to recover (51.2V model: 59.2V, 25.6V model: 29.6V over-voltage point)
Over-discharge Protection RecoveryConnect charger to activate (51.2V model: 43.2V, 25.6V model: 21.6V over-discharge point)
Charge Over-current Protection RecoveryDischarge current >1A to recover
Over-discharge current protection releaseReleased when charging current >1A
Short-circuit protection function Presentautomatically released during charging
MOS high-temperature protectionMOSFET over-temperature protection
Cell temperature protectionProtection for low cell temperature (-20°C) and high temperature (70°C)
Ambient temperature alarmLow-temperature protection -20°C; high-temperature protection 75°C
Cell failure protectionSingle-cell voltage difference >1V
Display & Monitoring
DisplayLED light strip indicator + LCD displayLCD display
Communication & Expansion
Modules connection1-15
CommunicationStandard RS232, RS485, CAN
Environmental Ratings
Protection ratingIP21
Operating temperature rangeDischarge: -10°C to +50°C; Charge: +0°C to +60°C
Storage temperature>1 month: 0–35°C; ≤1 month: -20–45°C
Mechanical Specifications
Terminal typeM8
Depth × Width × Height (mm)720*480*170785*510*293755*490*253532*347*170475*420*255476*496*255
Weight (net weight, for reference)KG54.5100116305165

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