SolaX V2 Triple Power HV 5.8kWh LFP Extension Battery SLAVE
#3: HV11550-58-SLAVE-V2 Storage Systems - Lion Battery Pack
SolaX V2 Datasheet
SolaX V2 Installation Manual
SolaX V2 Warranty
V2 batteries are compatible with V1 slave batteries
SolaX Triple Power LFP Extension Battery (Slave) – HV11550-58
The SolaX Triple Power LFP 5.8kWh Slave Battery is designed to expand the storage capacity of your SolaX Master Battery system. Perfectly matched with the X1-Hybrid, X3-Hybrid, and X1-AC inverters, this high-performance lithium battery offers scalable energy storage up to 23.2kWh.
⚠️ Important: This is an extension (slave) battery only. It must be connected to a Triple Power 5.8kWh Master Battery (HV-T-BAT-H-58) and is not compatible with Generation 1 or 2 SolaX BMS or batteries.
Key Features
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🔋 5.8kWh lithium battery (Slave) – designed to work only with the Master battery
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📈 Scalable to 23.2kWh – install up to 3 slaves with 1 Master (system dependent)
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⚡ Up to 4kW charge/discharge rate
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✅ High-voltage system – reduced cabling requirements
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🛠️ Plug & play installation – supplied with cables for easy setup
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🔄 90% depth of discharge – maximises usable storage
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🔋 6,000+ life cycles – built for long-term reliability
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🔒 Compact, modern design (Blue Top initially, moving to Black Top in newer versions)
Compatibility Rules
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Single-phase system: 1 Master + up to 2 Slave batteries (max. 3 batteries total)
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Three-phase system: 1 Master + 2–3 Slave batteries (max. 4 batteries total)
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Only compatible with Triple Power 5.8kWh Master Battery
Technical Specifications
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Battery Type: Lithium Iron Phosphate (LiFePO4)
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Nominal Energy: 5.8kWh (5800Wh)
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Depth of Discharge (DoD): 90%
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Voltage: 115 V
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Continuous Discharge Rate: 2875 W
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Maximum Discharge Rate (5 Minutes): 4000 W
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Surge Discharge Rate (15 Seconds): 4000 W
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Maximum Charge Rate (5 Minutes): 4000 W
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Weight: 72.2 kg
Why Choose the SolaX Triple Power LFP Slave Battery?
The SolaX Triple Power Slave Battery is the ideal expansion module for growing households and businesses that want to increase storage capacity without replacing their entire battery system. With its scalable design, long lifespan, and efficient high-voltage performance, it’s a future-proof solution for clean, reliable energy storage.

