Skip to main content
GB-L12 vs ECS4300H-H3 8 of 18 identical Swap Change batteries

Deye GB-L12 vs FoxESS ECS4300H-H3

Deye GB-L12
GB-L12
11.04 kWh LFP HV
Open battery page Datasheet PDF
VS
FoxESS ECS4300H-H3
ECS4300H-H3
11.2 kWh 95.0 % round-trip LFP HV
Open battery page Datasheet PDF
The verdict

ECS4300H-H3 leads on the differences that matter

The largest is usable energy: 0.16 kWh apart. 8 of 18 comparable parameters are identical, with 15 more left out because at least one datasheet does not publish them.

See all 10 differences
How alike are they
8 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 18 parameters
Parameter GB-L12 ECS4300H-H3 Difference
Usable energy 11.04 kWh 11.20 kWh 0.16 kWh apart
Max system capacity 24.5 kWh 29.0 kWh 4.4 kWh more room to expand
Nominal voltage 307 V 173 V 134 V apart
Weight 136.0 kg 115.5 kg 20.5 kg lighter
Weight per kWh 12.3 kg/kWh 10.3 kg/kWh 2.0 kg/kWh lighter
Nominal energy 12.27 kWh 12.44 kWh 0.17 kWh apart
Max operating temperature 60 °C 55 °C 5 °C more heat tolerant
Modules per stack 2-6 2-7 2-6 vs 2-7
Operating voltage 166.4-700 V 145.8-197.1 V 166.4-700 V vs 145.8-197.1 V
Dimensions 870x540x385 mm 494x570x380 mm 870x540x385 mm vs 494x570x380 mm

Shop prices by brand: See 44 Deye offers · See 21 FoxESS offers

02

Full specification

Parameter GB-L12 ECS4300H-H3 Difference
Capacity
Usable energy 11.04 kWh 11.20 kWh 0.16 kWh apart
Nominal energy 12.27 kWh 12.44 kWh 0.17 kWh apart
Depth of discharge 90 % 90 % Same
Max system capacity 24.5 kWh 29.0 kWh +4.4 kWh for ECS4300H-H3
Modules per stack 2-6 2-7 2-6 vs 2-7
Power
Continuous discharge power 12.29 kW - Not published by FoxESS
Continuous charge power 12.29 kW - Not published by FoxESS
Peak discharge power 15.36 kW - Not published by FoxESS
Power per kWh 1.11 kW/kWh - Not published by FoxESS
Efficiency and lifetime
Round-trip efficiency - 95.0 % Not published by Deye
Cycle life 6000 cycles 6000 cycles Same
Cycle test depth - 90 % Not published by Deye
Capacity at end of life 70 % - Not published by FoxESS
Self-discharge - - Neither datasheet publishes this
Electrical
Voltage class High voltage High voltage Same
Nominal voltage 307 V 173 V 134 V apart
Operating voltage 166.4-700 V 145.8-197.1 V 166.4-700 V vs 145.8-197.1 V
Cell chemistry LFP LFP Same
Active cell balancing - - Neither datasheet publishes this
Thermal management Yes - Not published by FoxESS
Built-in inverter
Inverter None (battery only) None (battery only) Same
Inverter power - - Neither datasheet publishes this
Grid connection - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight 136.0 kg 115.5 kg -20.5 kg for ECS4300H-H3
Weight per kWh 12.3 kg/kWh 10.3 kg/kWh -2.0 kg/kWh for ECS4300H-H3
Dimensions 870x540x385 mm 494x570x380 mm 870x540x385 mm vs 494x570x380 mm
Ingress protection IP65 IP65 Same
Outdoor-rated Yes Yes Same
Min operating temperature -20 °C -20 °C Same
Max operating temperature 60 °C 55 °C +5 °C for GB-L12
Warranty
Warranty 10 yrs - Not published by FoxESS
Warranted throughput - - Neither datasheet publishes this
03

More useful comparisons

Open all batteries
Similar capacity
Deye GB-L12 vs BYD Battery-Box Premium HVM 11.0
7 differences, the largest is max system capacity
Similar capacity
Deye GB-L12 vs Deye GB-SL-EU (3 modules in series)
5 differences, the largest is weight
Similar capacity
Deye GB-L12 vs Dyness Tower Pro TP11
15 differences, the largest is continuous discharge power
Similar capacity
FoxESS ECS4300H-H3 vs Pylontech Force H1 (5 modules)
7 differences, the largest is nominal voltage
04

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.