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Tower T17 vs HS17.5 5 of 11 identical Swap Change batteries

Dyness Tower T17 vs FoxESS HS17.5

Tower T17
17.76 kWh HV
Open battery page Datasheet PDF
VS
HS17.5
16.68 kWh LFP HV
Open battery page Datasheet PDF
The verdict

HS17.5 leads on the differences that matter

The largest is usable energy: 1.08 kWh apart. 5 of 11 comparable parameters are identical, with 22 more left out because at least one datasheet does not publish them.

See all 6 differences
How alike are they
5 of 11 comparable
parameters are identical
identical differs not published
01

What actually differs

6 of 11 parameters
Parameter Tower T17 HS17.5 Difference
Usable energy 17.76 kWh 16.68 kWh 1.08 kWh apart
Nominal energy 17.76 kWh 17.20 kWh 0.56 kWh apart
Nominal voltage 480 V 358 V 122 V apart
Max operating temperature 50 °C 55 °C 5 °C more heat tolerant
Ingress protection IP54 IP21 IP54 vs IP21
Modules per stack 2-6 2-8 2-6 vs 2-8

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02

Full specification

Parameter Tower T17 HS17.5 Difference
Capacity
Usable energy 17.76 kWh 16.68 kWh 1.08 kWh apart
Nominal energy 17.76 kWh 17.20 kWh 0.56 kWh apart
Depth of discharge 100 % - Not published by FoxESS
Max system capacity - 19.6 kWh Not published by Dyness
Modules per stack 2-6 2-8 2-6 vs 2-8
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 - - Neither datasheet publishes this
Cycle life 6000 cycles 6000 cycles Same
Cycle test depth - 80 % 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 480 V 358 V 122 V apart
Operating voltage - 302.4-408.8 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 228.0 kg - Not published by FoxESS
Weight per kWh 12.8 kg/kWh - Not published by FoxESS
Dimensions 1300x504x380 mm - Not published by FoxESS
Ingress protection IP54 IP21 IP54 vs IP21
Outdoor-rated - - Neither datasheet publishes this
Min operating temperature -10 °C -10 °C Same
Max operating temperature 50 °C 55 °C +5 °C for HS17.5
Warranty
Warranty 10 yrs 10 yrs Same
Warranted throughput - - Neither datasheet publishes this
03

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04

Written summary

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