Gobel Power GP-SR1-JK200 Standard 51.2V 280Ah 15kWh LiFePO4 Server Rack Battery

The battery is compatible with most major hybrid/off-grid inverters. Both the CAN port and the RS485 port support the following communication protocols:

• Deye
• Pylon
• Growatt
• Victron
• Megarevo
• INVT
• GoodWe
• FSS
• Must
• Luxpower

The protocol can be selected on the unit, and the compatible inverter list is updated on our website. The battery also features built-in Bluetooth, so you can monitor it wirelessly in addition to the wired inverter communication.

Parallel connection: Up to 15 units in parallel are supported, allowing you to expand the system up to roughly 215kWh of storage.

Series connection: Not supported. This is a 51.2V battery — to build a higher-voltage system (e.g., HV battery bank), use a suitable inverter or battery pairing approach rather than connecting units in series.

The battery is rated for 10,000 charge/discharge cycles. With one cycle per day, that corresponds to more than 27 years of daily cycling, which is why we back it with a 5-year warranty. Cycle life figures assume operation within the specified temperature and voltage windows.

The battery comes with a 5-year warranty. The full terms and conditions are available in our Warranty Policy. If you have any questions about warranty coverage, feel free to contact us before ordering.

Specifications:

• Dimensions: 482.6 × 771.5 × 241 mm (19-inch rack-compatible form factor)
• Weight: 118 kg

Mounting options: Standard server rack (19" cabinet) or floor standing. The unit is designed for indoor use with natural cooling — no forced-air cooling is required, but please ensure the installation area is dry and ventilated.

Yes. The battery includes a built-in 2A active balancer that continuously transfers energy between cells to keep them balanced. This maintains long-term cell consistency, protects the 16S1P cell pack, and helps the battery reach its full 10,000-cycle design life without requiring an external balancer.

• Max charge current: 140A (approx. 0.5C)
• Max discharge current: 200A (approx. 0.7C)

For battery longevity, we recommend sizing your inverter and charge controller so that typical operating currents stay comfortably below these maximums. The charge cut-off protection voltage is 55.2V and the discharge cut-off protection voltage is 46V.

• Charge temperature: 0°C to +60°C
• Discharge temperature: -30°C to +60°C

The wide discharge range makes it suitable for cold climates, but note that charging below 0°C is prohibited — the BMS will block charging when cell temperatures are below freezing. For outdoor or unheated installations in winter, plan to warm the battery above 0°C before charging.

Batteries of this type are shipped by sea freight to ensure safe transport of large-format LiFePO4 products. For destinations where we indicate tax prepaid, import taxes have already been paid on your behalf — there is nothing additional for you to pay on arrival. Accessories and spare parts can be shipped faster via UPS/DHL. Please contact us with your delivery address for an exact shipping quote and lead time.

The Standard version ships with HSEV Hithium280 / HSEV- EVE280 cells in a 16S1P 51.2V / 280Ah configuration. The Premium uses HSEV EVE280 cells — the higher-consistency EVE cells with a stricter test protocol (intact QR code, verified real capacity, IR, and voltage).

Standard vs Premium at a glance:

• Full capacity: 280Ah–305Ah @ 25°C vs 300Ah–315Ah @ 25°C
• Max charge voltage (cell consistency indicator): 56V+ vs 57V+
• Pack certification: CE vs CE + IEC-62619

Both use the same 200A JK ESS BMS with built-in 2A active balancing and the compressed-cell (300kgf) enclosure. Every battery ships with published cell and pack test data (serials like GPHC280H240401R1003) so you can verify what's inside before it arrives.

Compressed cells (300kgf): prismatic LiFePO4 cells swell and contract over their cycle life. The GP-SR1 enclosure applies and holds 300 kgf of compression on the 16-cell stack — this controls swelling, maintains internal contact between cells and busbars, and directly extends cycle life.

Pre-shipment testing: every GP-SR1 battery undergoes rigorous full charge/discharge cycling tests before packaging. Standards for LSEV-cell batteries:

• No single cell may trigger overvoltage protection before ≥56V — a lower value means poorer cell consistency
• No single cell may trigger low-voltage protection before ≤44V — a higher value means poorer consistency
• Verified capacity ≥280Ah

These thresholds prove cell uniformity — inconsistent packs age unevenly and fail early. Certifications: CE, ISO9001, ISO14001.

Yes. The JK200 BMS supports CAN and RS485 lithium-mode communication with Deye, Pylon, Growatt, Victron, Megarevo, INVT, GoodWe, FSS, Must, and Luxpower inverters.

Inverter without a BMS/lithium communication input? Set it manually in lead-acid mode:

• Max charge voltage: 55.2V (3.45V per cell)
• Max charge current: 140A
• Max discharge current: 200A

The BMS keeps enforcing overcharge, over-discharge, and short-circuit protection either way, and built-in Bluetooth app monitoring works regardless of inverter type. Victron users: dedicated VRM configuration profiles are on the product page, and the battery integrates with Home Assistant for smart-home monitoring.

Routine care for a long service life:

• Monthly full charge: perform a full charge to 100% at least once a month. This resets SOC calibration — important because some BMS platforms don't support manual SOC synchronization between parallel packs, and small drift can accumulate otherwise
• Degradation: LiFePO4 typically fades about 2–4% per year in normal use. Avoiding sustained 100% DoD, extreme temperatures, and long periods at very low SOC keeps you at the lower end of that range
• Parallel systems: up to 15 units — always use packs of the same capacity and same cell version, never mix 280Ah and 314Ah models
• Storage: if the battery will sit unused, keep SOC around 40–60% and avoid months of low SOC, which damages cells

Follow the manufacturer's charging/discharging parameters (cut-off 55.2V charge / 46V discharge) and the battery will deliver its full 10,000-cycle design life.

Mounting:

• Standard 19-inch 6U server rack or floor standing — both supported
• Footprint 482.6 × 771.5 × 241 mm, 118 kg, natural cooling (silent, fanless)
• Designed for indoor use in a dry, ventilated space

Typical applications:

• Home energy storage — solar self-consumption, backup power, off-grid living
• Communication base stations and central computer rooms — FTTB, FTTH, RRU, BBU scenarios
• High current performance (~continuous 1C discharge) with excellent constant-power output and high energy density

The BMS optionally supports anti-theft functions (GPS, gyroscope, communication BMS lock) for installations where security matters.