---
title: "FoxESS ECS4300H-H6 vs FoxESS ECS4300H-H7 - Battery Comparison | ComparePV"
description: "Compare FoxESS ECS4300H-H6 vs FoxESS ECS4300H-H7 side by side: usable energy, round-trip efficiency, power, cycle life and the full specification."
source: "https://comparepv.com/compare-batteries/fox-ess-ecs4300h-h6/fox-ess-ecs4300h-h7"
updated: 2026-01-11
---

# FoxESS ECS4300H-H6 vs FoxESS ECS4300H-H7

ECS4300H-H6 leads on the differences that matter

The largest is usable energy: 3.74 kWh apart. 14 of 20 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.


## The two batteries


| Attribute | A | B |
| --- | --- | --- |
| Battery | [FoxESS ECS4300H-H6](https://comparepv.com/battery/fox-ess-ecs4300h-h6) | [FoxESS ECS4300H-H7](https://comparepv.com/battery/fox-ess-ecs4300h-h7) |
| Manufacturer | FoxESS | FoxESS |
| Usable energy | 22.39 kWh | 26.13 kWh |
| Cells and voltage | LFP HV | LFP HV |

[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 | ECS4300H-H6 | ECS4300H-H7 | Difference |
| --- | --- | --- | --- |
| Usable energy | 22.39 kWh | 26.13 kWh | 3.74 kWh apart |
| Nominal energy | 24.88 kWh | 29.03 kWh | 4.15 kWh apart |
| Nominal voltage | 346 V | 403 V | 58 V apart |
| Weight | 226.5 kg | 263.5 kg | -37.0 kg for ECS4300H-H6 |
| Operating voltage | 291.6-394.2 V | 340.2-459.9 V | 291.6-394.2 V vs 340.2-459.9 V |
| Dimensions | 878x570x380 mm | 1006x570x380 mm | 878x570x380 mm vs 1006x570x380 mm |


## Every compared parameter


| Parameter | ECS4300H-H6 | ECS4300H-H7 |
| --- | --- | --- |
| Usable energy | 22.39 kWh | 26.13 kWh |
| Nominal energy | 24.88 kWh | 29.03 kWh |
| Depth of discharge | 90 % | 90 % |
| Max system capacity | 29.0 kWh | 29.0 kWh |
| Modules per stack | 2-7 | 2-7 |
| Continuous discharge power | - | - |
| Continuous charge power | - | - |
| Peak discharge power | - | - |
| Power per kWh | - | - |
| Round-trip efficiency | 95.0 % | 95.0 % |
| Cycle life | 6000 cycles | 6000 cycles |
| Cycle test depth | 90 % | 90 % |
| Capacity at end of life | - | - |
| Self-discharge | - | - |
| Voltage class | High voltage | High voltage |
| Nominal voltage | 346 V | 403 V |
| Operating voltage | 291.6-394.2 V | 340.2-459.9 V |
| Cell chemistry | LFP | LFP |
| Active cell balancing | - | - |
| Thermal management | - | - |
| Inverter | None (battery only) | None (battery only) |
| Inverter power | - | - |
| Grid connection | - | - |
| Backup power | - | - |
| Weight | 226.5 kg | 263.5 kg |
| Weight per kWh | 10.1 kg/kWh | 10.1 kg/kWh |
| Dimensions | 878x570x380 mm | 1006x570x380 mm |
| Ingress protection | IP65 | IP65 |
| Outdoor-rated | Yes | Yes |
| Min operating temperature | -20 °C | -20 °C |
| Max operating temperature | 55 °C | 55 °C |
| Warranty | - | - |
| Warranted throughput | - | - |


## Related comparisons

- [FoxESS ECS4300H-H6 vs Pylontech Force H1 (FH48074)](https://comparepv.com/compare-batteries/fox-ess-ecs4300h-h6/pylontech-force-h1-fh48074) - 8 differences, the largest is nominal voltage
- [FoxESS ECS4300H-H6 vs Deye GB-L (6 modules in series)](https://comparepv.com/compare-batteries/fox-ess-ecs4300h-h6/ningbo-deye-ess-technology-co-ltd-gb-l-6-modules-in-series) - 10 differences, the largest is usable energy
- [FoxESS ECS4300H-H6 vs BYD Battery-Box Premium HVM 22.1](https://comparepv.com/compare-batteries/fox-ess-ecs4300h-h6/byd-battery-box-premium-hvm-22-1) - 9 differences, the largest is usable energy
- [FoxESS ECS4300H-H7 vs Deye BOS-G30](https://comparepv.com/compare-batteries/fox-ess-ecs4300h-h7/bos-g30) - 10 differences, the largest is usable energy
- [FoxESS ECS4300H-H7 vs Deye BOS-G25](https://comparepv.com/compare-batteries/fox-ess-ecs4300h-h7/bos-g25) - 10 differences, the largest is usable energy
- [FoxESS ECS4300H-H7 vs Deye BOS-G25 Pro](https://comparepv.com/compare-batteries/fox-ess-ecs4300h-h7/deye-bos-g25-pro) - 10 differences, the largest is usable energy


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Source: https://comparepv.com/compare-batteries/fox-ess-ecs4300h-h6/fox-ess-ecs4300h-h7

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