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GB-L8 vs ECS2900-H3 9 of 18 identical Swap Change batteries

Deye GB-L8 vs FoxESS ECS2900-H3

Deye GB-L8
GB-L8
7.36 kWh LFP HV
Open battery page Datasheet PDF
VS
FoxESS ECS2900-H3
ECS2900-H3
7.78 kWh 95.0 % round-trip LFP HV
Open battery page Datasheet PDF
The verdict

GB-L8 leads on the differences that matter

The largest is usable energy: 0.42 kWh apart. 9 of 18 comparable parameters are identical, with 15 more left out because at least one datasheet does not publish them.

See all 9 differences
How alike are they
9 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

9 of 18 parameters
Parameter GB-L8 ECS2900-H3 Difference
Usable energy 7.36 kWh 7.78 kWh 0.42 kWh apart
Max system capacity 24.5 kWh 20.2 kWh 4.4 kWh more room to expand
Nominal energy 8.18 kWh 8.64 kWh 0.46 kWh apart
Nominal voltage 205 V 173 V 32 V apart
Weight 97.0 kg 100.3 kg 3.3 kg lighter
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 650x540x385 mm 470x570x380 mm 650x540x385 mm vs 470x570x380 mm

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

02

Full specification

Parameter GB-L8 ECS2900-H3 Difference
Capacity
Usable energy 7.36 kWh 7.78 kWh 0.42 kWh apart
Nominal energy 8.18 kWh 8.64 kWh 0.46 kWh apart
Depth of discharge 90 % 90 % Same
Max system capacity 24.5 kWh 20.2 kWh +4.4 kWh for GB-L8
Modules per stack 2-6 2-7 2-6 vs 2-7
Power
Continuous discharge power 8.19 kW - Not published by FoxESS
Continuous charge power 8.19 kW - Not published by FoxESS
Peak discharge power 10.24 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 205 V 173 V 32 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 97.0 kg 100.3 kg -3.3 kg for GB-L8
Weight per kWh 13.2 kg/kWh 12.9 kg/kWh Effectively the same
Dimensions 650x540x385 mm 470x570x380 mm 650x540x385 mm vs 470x570x380 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-L8
Warranty
Warranty 10 yrs - Not published by FoxESS
Warranted throughput - - Neither datasheet publishes this
03

More useful comparisons

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Deye GB-L8 vs Deye GB-SL-EU (2 modules in series)
5 differences, the largest is weight
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Deye GB-L8 vs Dyness Tower Pro TP7
16 differences, the largest is continuous discharge power
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Deye GB-L8 vs FoxESS ECS4300H-H2
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FoxESS ECS2900-H3 vs Sigenergy SigenStor BAT 8.0
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FoxESS ECS2900-H3 vs BYD Battery-Box Premium HVS 7.7
15 differences, the largest is max system capacity
04

Written summary

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