Deye

Deye GB-SL

A high-voltage floor battery of 4.09 kWh GB-LM4.0 modules covering 8.18 to 24.54 kWh, rated to discharge at up to 60 degrees C with Type II surge protection.

Models Covered: DEYE-GB-SL

Manufacturer: Ningbo Deye Inverter Technology Co., Ltd

Application: Where summer heat makes other packs derate, this one keeps working. The Deye GB-SL is rated to discharge from -20 up to 60 degrees C, five degrees beyond the usual ceiling, while its IP65 tower stands outside on 540 x 385 mm of ground, rising 1,980 mm. Inside, GB-LM4.0 modules of 4.09 kWh and 102.4 V each combine in twos through sixes for 8.18 to 24.54 kWh, of which 7.36 to 22.08 kWh is usable at the recommended 90% depth of discharge, across 204.8 to 614.4 V nominal. Ten stacks can be paralleled when one is not enough. Type II overvoltage protection guards both the DC and AC sides against surges, the charging strategy adapts itself to the BMS, and natural cooling means no fans to age or hum. Current runs 40 A continuous with a 50 A peak for 120 seconds, cycle life passes 6,000 cycles to 70% capacity, certification covers CE, IEC 62619, VDE 2510-50 and UN38.3, and the warranty is 10 years.

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Technical Specifications

Parameter DEYE-GB-SL
Battery Data
Energy 4.09 kWh
Usable Energy 7.36-22.08 kWh
Module Energy 4.09 kWh
System Energy 8.18-24.54 kWh
Nominal Voltage 102.4 V
Module Nominal Voltage 102.4 V
System Nominal Voltage 204.8-614.4 V
Operating Voltage 179.2-691.2 V
Rated Capacity 40 Ah
Module Capacity 40 Ah
Cell Chemistry LiFePO4
Cycle Life >6000
End-of-Life Capacity 70%
Recommended Depth of Discharge 90%
Max. Charge Current 40 A
Max. Discharge Current 40 A
Max. Charge/Discharge Current 40 A
Recommended Charge/Discharge Current 20 A
Peak Discharge Current 50 (120s) A
Modules in Series 2-6
Min. Battery Module Quantity 2
Battery Module Models GB-LM4.0
Parallel Units 10
Overvoltage Protection DC Type II, AC Type II
Warranty (Years) 10
Mechanical & Interface
Communication Ports CAN2.0, RS485
Dimensions 540 x 1980 x 385 mm
Additional Notes Charging Strategy for Li-ion Battery: Self-adaption to BMS
Module Dimensions 540 x 220 x 385 mm
Module Weight 39 kg
Weight 137-293 kg
Environment & Protection
Altitude <2000 m
Charge Temperature -20 to 55 °C
Discharge Temperature -20 to 60 °C
Operating Humidity 5-85%
Installation Location Floor-Mounted
Enclosure IP Rating IP65
Storage Temperature 0-35 °C
Cooling Type Natural Cooling
Working Temperature Charge: -20 to 55 / Discharge: -20 to 60 °C

Figures are measured at the test conditions the manufacturer’s datasheet states. A dash means the manufacturer publishes no figure for that model.

Availability & grid compliance in Sudan

Market Sudan
Grid authority / regulator Sudanese Electricity Distribution Company (SEDC), Ministry of Energy and Petroleum
Quotation currency SDG
Support hours timezone Africa/Khartoum
Delivery & installation coverage Khartoum, Omdurman, Port Sudan, Kassala, Nyala

Figures on this page are the manufacturer's own, measured at the test conditions the datasheet states — they do not change by country. What changes is the approval that has to be met before the unit is energised: in Sudan that is Sudanese Electricity Distribution Company (SEDC), Ministry of Energy and Petroleum. Confirm the grid code, import requirements and any local certification with them, or with us, before you order.

Key Features & Technical Highlights

  • Keeps working at 60 degrees C: Discharge is rated from -20 up to 60 degrees C, five degrees past the common ceiling.
  • 4.09 kWh GB-LM4.0 modules: Two to six modules of 102.4 V each combine into 8.18 to 24.54 kWh of storage.
  • Type II surge shields: Overvoltage protection of DC Type II and AC Type II covers both sides of the connection.
  • Ten towers side by side: Up to 10 stacks parallel for larger homes, over CAN2.0 and RS485.
  • Silent natural cooling: No fans at all: natural cooling carries the heat while cycle life passes 6,000 cycles.
  • Charge that adapts itself: The lithium charging strategy adapts itself to the BMS without manual profiles.

Frequently Asked Questions

How does the GB-SL handle very hot climates?

Its discharge window extends to 60 degrees C, higher than the 55-degree limit common elsewhere, and natural cooling avoids fan wear in dusty heat.

What storage sizes does the GB-SL offer?

From 8.18 kWh with two GB-LM4.0 modules to 24.54 kWh with six, of which 7.36 to 22.08 kWh is usable at 90% depth of discharge; ten towers can then be paralleled.

Does the GB-SL protect against grid surges?

Yes, it integrates Type II overvoltage protection on the DC side and Type II on the AC side.

How does charging work on the GB-SL?

The lithium charging strategy self-adapts to the BMS; current is 40 A continuous, 20 A recommended, with a 50 A discharge peak lasting 120 seconds.

What are the physical facts of a GB-SL tower?

It measures 540 x 1980 x 385 mm, weighs 137 to 293 kg depending on module count, seals to IP65 and stands on the floor below 2,000 m altitude.