---
title: "FoxESS ECS2900-H6 vs Deye GB-L16 - Battery Comparison | ComparePV"
description: "Compare FoxESS ECS2900-H6 vs Deye GB-L16 side by side: usable energy, round-trip efficiency, power, cycle life and the full specification."
source: "https://comparepv.com/compare-batteries/fox-ess-ecs2900-h6/gb-l16"
updated: 2026-01-11
---

# FoxESS ECS2900-H6 vs Deye GB-L16

GB-L16 leads on the differences that matter

The largest is usable energy: 0.83 kWh apart. 8 of 18 comparable parameters are identical, with 15 more left out because at least one datasheet does not publish them.


## The two batteries


| Attribute | A | B |
| --- | --- | --- |
| Battery | [FoxESS ECS2900-H6](https://comparepv.com/battery/fox-ess-ecs2900-h6) | [Deye GB-L16](https://comparepv.com/battery/gb-l16) |
| Manufacturer | FoxESS | Deye |
| Usable energy | 15.55 kWh | 14.72 kWh |
| Cells and voltage | LFP HV | LFP HV |

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

[See 44 Deye offers](https://comparepv.com/offers?manufacturer=deye&product_type=battery)


## Where they differ

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


| Parameter | ECS2900-H6 | GB-L16 | Difference |
| --- | --- | --- | --- |
| Usable energy | 15.55 kWh | 14.72 kWh | 0.83 kWh apart |
| Max system capacity | 20.2 kWh | 24.5 kWh | +4.4 kWh for GB-L16 |
| Nominal energy | 17.28 kWh | 16.36 kWh | 0.92 kWh apart |
| Nominal voltage | 346 V | 410 V | 64 V apart |
| Weight | 196.3 kg | 175.0 kg | -21.3 kg for GB-L16 |
| Weight per kWh | 12.6 kg/kWh | 11.9 kg/kWh | -0.7 kg/kWh for GB-L16 |
| Max operating temperature | 55 °C | 60 °C | +5 °C for GB-L16 |
| Modules per stack | 2-7 | 2-6 | 2-7 vs 2-6 |
| Operating voltage | 291.6-394.2 V | 166.4-700 V | 291.6-394.2 V vs 166.4-700 V |
| Dimensions | 830x570x380 mm | 1090x540x385 mm | 830x570x380 mm vs 1090x540x385 mm |


## Every compared parameter


| Parameter | ECS2900-H6 | GB-L16 |
| --- | --- | --- |
| Usable energy | 15.55 kWh | 14.72 kWh |
| Nominal energy | 17.28 kWh | 16.36 kWh |
| Depth of discharge | 90 % | 90 % |
| Max system capacity | 20.2 kWh | 24.5 kWh |
| Modules per stack | 2-7 | 2-6 |
| Continuous discharge power | - | 16.38 kW |
| Continuous charge power | - | 16.38 kW |
| Peak discharge power | - | 20.48 kW |
| Power per kWh | - | 1.11 kW/kWh |
| Round-trip efficiency | 95.0 % | - |
| Cycle life | 6000 cycles | 6000 cycles |
| Cycle test depth | 90 % | - |
| Capacity at end of life | - | 70 % |
| Self-discharge | - | - |
| Voltage class | High voltage | High voltage |
| Nominal voltage | 346 V | 410 V |
| Operating voltage | 291.6-394.2 V | 166.4-700 V |
| Cell chemistry | LFP | LFP |
| Active cell balancing | - | - |
| Thermal management | - | Yes |
| Inverter | None (battery only) | None (battery only) |
| Inverter power | - | - |
| Grid connection | - | - |
| Backup power | - | - |
| Weight | 196.3 kg | 175.0 kg |
| Weight per kWh | 12.6 kg/kWh | 11.9 kg/kWh |
| Dimensions | 830x570x380 mm | 1090x540x385 mm |
| Ingress protection | IP65 | IP65 |
| Outdoor-rated | Yes | Yes |
| Min operating temperature | -20 °C | -20 °C |
| Max operating temperature | 55 °C | 60 °C |
| Warranty | - | 10 yrs |
| Warranted throughput | - | - |


## Related comparisons

- [FoxESS ECS2900-H6 vs Huawei LUNA2000-15-S0](https://comparepv.com/compare-batteries/fox-ess-ecs2900-h6/huawei-luna2000-15-s0) - 11 differences, the largest is usable energy
- [FoxESS ECS2900-H6 vs Solplanet Ai-HB 175A](https://comparepv.com/compare-batteries/fox-ess-ecs2900-h6/solplanet-ai-hb-175a) - 10 differences, the largest is usable energy
- [FoxESS ECS2900-H6 vs FoxESS ECS4300H-H4](https://comparepv.com/compare-batteries/fox-ess-ecs2900-h6/fox-ess-ecs4300h-h4) - 8 differences, the largest is usable energy
- [Deye GB-L16 vs Deye GB-SL-EU (4 modules in series)](https://comparepv.com/compare-batteries/gb-l16/gb-sl-eu-4-modules-in-series) - 5 differences, the largest is weight
- [Deye GB-L16 vs Dyness Tower Pro TP15](https://comparepv.com/compare-batteries/gb-l16/dyness-tower-pro-tp15) - 15 differences, the largest is continuous discharge power


---

Source: https://comparepv.com/compare-batteries/fox-ess-ecs2900-h6/gb-l16

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