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ECS2900-H7 vs Tower T17 5 of 14 identical Swap Change batteries

FoxESS ECS2900-H7 vs Dyness Tower T17

FoxESS ECS2900-H7
ECS2900-H7
18.14 kWh 95.0 % round-trip LFP HV
Open battery page Datasheet PDF
VS
Tower T17
17.76 kWh HV
Open battery page Datasheet PDF
The verdict

ECS2900-H7 leads on the differences that matter

The largest is usable energy: 0.38 kWh apart. 5 of 14 comparable parameters are identical, with 19 more left out because at least one datasheet does not publish them.

See all 9 differences
How alike are they
5 of 14 comparable
parameters are identical
identical differs not published
01

What actually differs

9 of 14 parameters
Parameter ECS2900-H7 Tower T17 Difference
Usable energy 18.14 kWh 17.76 kWh 0.38 kWh apart
Nominal energy 20.16 kWh 17.76 kWh 2.40 kWh apart
Depth of discharge 90 % 100 % 10 pp more of the cells usable
Nominal voltage 403 V 480 V 77 V apart
Min operating temperature -20 °C -10 °C 10 °C more cold tolerant
Max operating temperature 55 °C 50 °C 5 °C more heat tolerant
Ingress protection IP65 IP54 IP65 vs IP54
Modules per stack 2-7 2-6 2-7 vs 2-6
Dimensions 950x570x380 mm 1300x504x380 mm 950x570x380 mm vs 1300x504x380 mm

Shop prices by brand: See 21 FoxESS offers · See 20 Dyness offers

02

Full specification

Parameter ECS2900-H7 Tower T17 Difference
Capacity
Usable energy 18.14 kWh 17.76 kWh 0.38 kWh apart
Nominal energy 20.16 kWh 17.76 kWh 2.40 kWh apart
Depth of discharge 90 % 100 % +10 pp for Tower T17
Max system capacity 20.2 kWh - Not published by Dyness
Modules per stack 2-7 2-6 2-7 vs 2-6
Power
Continuous discharge power - 10.65 kW Not published by FoxESS
Continuous charge power - 10.65 kW Not published by FoxESS
Peak discharge power - - Neither datasheet publishes this
Power per kWh - 0.60 kW/kWh Not published by FoxESS
Efficiency and lifetime
Round-trip efficiency 95.0 % - Not published by Dyness
Cycle life 6000 cycles 6000 cycles Same
Cycle test depth 90 % - Not published by Dyness
Capacity at end of life - - Neither datasheet publishes this
Self-discharge - - Neither datasheet publishes this
Electrical
Voltage class High voltage High voltage Same
Nominal voltage 403 V 480 V 77 V apart
Operating voltage 340.2-459.9 V - Not published by Dyness
Cell chemistry LFP - Not published by Dyness
Active cell balancing - - Neither datasheet publishes this
Thermal management - - Neither datasheet publishes this
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 228.3 kg 228.0 kg Effectively the same
Weight per kWh 12.6 kg/kWh 12.8 kg/kWh Effectively the same
Dimensions 950x570x380 mm 1300x504x380 mm 950x570x380 mm vs 1300x504x380 mm
Ingress protection IP65 IP54 IP65 vs IP54
Outdoor-rated Yes - Not published by Dyness
Min operating temperature -20 °C -10 °C -10 °C for ECS2900-H7
Max operating temperature 55 °C 50 °C +5 °C for ECS2900-H7
Warranty
Warranty - 10 yrs Not published by FoxESS
Warranted throughput - - Neither datasheet publishes this
03

More useful comparisons

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FoxESS ECS2900-H7 vs Dyness Tower Pro TP19
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FoxESS ECS2900-H7 vs Deye GB-L20
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FoxESS ECS2900-H7 vs Deye GB-SL-EU (5 modules in series)
11 differences, the largest is usable energy
04

Written summary

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