---
title: "Dyness Tower T17 vs FoxESS HS17.5 - Battery Comparison | ComparePV"
description: "Compare Dyness Tower T17 vs FoxESS HS17.5 side by side: usable energy, round-trip efficiency, power, cycle life and the full specification."
source: "https://comparepv.com/compare-batteries/dyness-tower-t17/foxess-hs17-5"
updated: 2026-01-11
---

# Dyness Tower T17 vs FoxESS HS17.5

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.


## The two batteries


| Attribute | A | B |
| --- | --- | --- |
| Battery | [Dyness Tower T17](https://comparepv.com/battery/dyness-tower-t17) | [FoxESS HS17.5](https://comparepv.com/battery/foxess-hs17-5) |
| Manufacturer | Dyness | FoxESS |
| Usable energy | 17.76 kWh | 16.68 kWh |
| Cells and voltage | HV | LFP HV |

[See 20 Dyness offers](https://comparepv.com/offers?manufacturer=dyness&product_type=battery)

[See 21 FoxESS offers](https://comparepv.com/offers?manufacturer=foxess&product_type=battery)


## Where they differ

Ranked by how much the difference matters, not by datasheet order.


| 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 for HS17.5 |
| Ingress protection | IP54 | IP21 | IP54 vs IP21 |
| Modules per stack | 2-6 | 2-8 | 2-6 vs 2-8 |


## Every compared parameter


| Parameter | Tower T17 | HS17.5 |
| --- | --- | --- |
| Usable energy | 17.76 kWh | 16.68 kWh |
| Nominal energy | 17.76 kWh | 17.20 kWh |
| Depth of discharge | 100 % | - |
| Max system capacity | - | 19.6 kWh |
| Modules per stack | 2-6 | 2-8 |
| Continuous discharge power | 10.65 kW | - |
| Continuous charge power | 10.65 kW | - |
| Peak discharge power | - | - |
| Power per kWh | 0.60 kW/kWh | - |
| Round-trip efficiency | - | - |
| Cycle life | 6000 cycles | 6000 cycles |
| Cycle test depth | - | 80 % |
| Capacity at end of life | - | - |
| Self-discharge | - | - |
| Voltage class | High voltage | High voltage |
| Nominal voltage | 480 V | 358 V |
| Operating voltage | - | 302.4-408.8 V |
| Cell chemistry | - | LFP |
| Active cell balancing | - | - |
| Thermal management | - | - |
| Inverter | None (battery only) | None (battery only) |
| Inverter power | - | - |
| Grid connection | - | - |
| Backup power | - | - |
| Weight | 228.0 kg | - |
| Weight per kWh | 12.8 kg/kWh | - |
| Dimensions | 1300x504x380 mm | - |
| Ingress protection | IP54 | IP21 |
| Outdoor-rated | - | - |
| Min operating temperature | -10 °C | -10 °C |
| Max operating temperature | 50 °C | 55 °C |
| Warranty | 10 yrs | 10 yrs |
| Warranted throughput | - | - |


## Related comparisons

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Source: https://comparepv.com/compare-batteries/dyness-tower-t17/foxess-hs17-5

Not in this file, on the page: a written summary generated on request.