Deye SE-G5.1 Pro-B

SE-G5.1 Pro-B · Deye

5.12 kWhmade in China

Good to know

A 5.12 kWh LiFePO4 battery made in China.

About 5.1 kWh usable: enough to run a 1 kW load (fridge, lights, TV, Wi-Fi and a laptop together) for about 5 hours.

Gives up to 5.12 kW continuously, 7.68 kW for 120 s.

Warranty: 10 years (the maker also states 16 MWh of energy through the battery).

Where to buy

Shops that list this model, by city:

Durban

Shop	Listed as	Price seen
Solar Supply Durban	SE G5.1 Pro	R 23 000	listing

Also stock this brand (ask them for this model): Central Solar Supplies (KwaZulu-Natal branch), TechHut.

Johannesburg

Also stock this brand (ask them for this model): Solar Warehouse SA (Sandton branch), JC Solar Panels (Enerlux), Leroy Merlin (Fourways store), TechSun Solar.

Cape Town

Also stock this brand (ask them for this model): Central Solar Supplies (Cape Town branch), TBS Solar, GW Store, Solar Stock.

How it compares

Where it sits among the 12 home batteries listed here (the best gets a full bar, the weakest a fifth, a figure the datasheet doesn't give none). Size isn't scored: the bars are shares and ratios. Cycle counts are measured at different depths and end points by each maker, so read them as a rough guide.

Usable share (depth of discharge) 90 %range 80–100

Cycle life 6000 cyclesrange 5500–6000

Power per kWh (continuous kW ÷ kWh) 1.0 ×range 0.5–1.0

Warranty 10 yearsrange 10–10

Warranty energy per kWh (MWh ÷ kWh) 3.12 range 2.15–4.59

Datasheet numbers

Chemistry / form	LiFePO4 / rack
Made in	China
Energy: nominal / usable	5.12 kWh / 5.12 kWh
Depth of discharge	90 %
Voltage: nominal (range)	51.2 V (43.2-57.6 V)
Max charge / discharge	100 A / 100 A
Continuous / peak power	5.12 kW / 7.68 kW for 120 s
Cycle life	6000 at 90% DoD, to 70% capacity
Warranty	10 years; 16 MWh
Parallel units	64
Communication	CAN 2.0, RS485
Inverters the maker lists	–
Certificates	UN38.3, IEC 62619, CE, UK, VDE 2510-50, CEI 0-21, FCC, UL 1973, UL 9540A
Protection	IP20
Operating temperature	charge 0 to 55 °C; discharge -20 to 55 °C
Weight / size	45 kg / 440 x 133 x 540 (W x H x D) mm

Source: maker's datasheet (SE-G5.1 Pro-B series brochure 20260907 V1.0 (deye.com)).