High Voltage Batttery 314Ah HV LiFePO4 Battery DIY Kit

The GP-SRA-PC314 is built from modular 18S groups (57.6V nominal per module), so you scale the system voltage by adding modules:

• 288V = 5 modules (90S) — minimum configuration
• 576V = 10 modules (180S)
• 864V = 15 modules (270S max) — maximum configuration

Any configuration in 18S increments between 288V and 864V works, which is why this HV DIY kit fits both 300V-class and 600V-class battery banks.

Ordering: the base kit includes the BMU, HV box, and cooling; each additional battery module is priced as an option (module quantity 6–15 pcs selectable at checkout). Pair with your preferred 3.2V 280Ah–314Ah LiFePO4 cells to set the pack's kWh capacity.

High-voltage safety is engineered in, not bolted on:

• HV Interface Box: main contactor, pre-charge circuit, fuse, and circuit breaker — safe, streamlined integration with external systems and controlled inrush at power-up
• BMU protections: over-voltage / under-voltage, over-temperature, short-circuit, HV interlock, and insulation detection
• Active/passive balancing across modules with real-time monitoring
• Temperature-controlled forced-air (fan) cooling for high-load or continuous operation

Operating temperature is -20°C to +55°C. These protections make the kit suitable for professional and advanced DIY applications — residential and commercial solar ESS, EV conversions, industrial UPS and backup power, and DC fast charging stations.

The BMU communicates over CANBus and RS485, compatible with most high-voltage hybrid and off-grid inverters — the same communication classes used by Deye, GoodWe, Growatt, Solis, Luxpower and other HV-series hybrid inverters.

• An Inverter Compatible List is available in the related downloads on the product page — check it against your inverter model before ordering
• BMS Resources are also downloadable for integration and configuration
• Real-time CAN/RS485 monitoring keeps the inverter and BMU synchronized on SOC, voltage, and current

Unlike low-voltage 51.2V packs, HV battery systems rely on proper lithium-mode communication — we recommend confirming your inverter's HV battery protocol (CAN baud rate and battery type settings) before assembly.

Applications — the modular 288V–864V range covers:

• Residential and commercial solar energy storage
• Electric vehicle battery systems and EV conversions
• Industrial UPS and backup power
• Custom high-voltage ESS solutions and DC fast charging stations

Warranty:

• Cells purchased for the kit carry a 10-year warranty; the BMS/BMU carries a 1-year warranty (hardware only)
• 30 days free return to the local warehouse

Delivery:

• Ships from the China warehouse in 50–60 days (module quantity options add weight — e.g. 15 modules adds +500kg — which affects freight)
• Sea freight with tax already paid — free tax to your door; spare parts ship via UPS/DHL