--- title: "FoxESS ECS2900-H6 vs SMA Home Storage 16.4 - Battery Comparison | ComparePV" description: "Compare FoxESS ECS2900-H6 vs SMA Home Storage 16.4 side by side: shop prices, usable energy, round-trip efficiency, power, cycle life and the full specification." source: "https://comparepv.com/compare-batteries/fox-ess-ecs2900-h6/sma-solar-technology-ag-sma-home-storage-16-4" updated: 2026-01-11 --- # FoxESS ECS2900-H6 vs SMA Home Storage 16.4 14 differences, and they point both ways The largest is usable energy: 0.85 kWh apart. 5 of 19 comparable parameters are identical, with 14 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) | [SMA Home Storage 16.4](https://comparepv.com/battery/sma-solar-technology-ag-sma-home-storage-16-4) | | Manufacturer | FoxESS | SMA Solar | | Usable energy | 15.55 kWh | 16.4 kWh | | Cells and voltage | LFP HV | LFP HV | ## Price offers | Shop | Country | ECS2900-H6 | SMA Home Storage 16.4 | | --- | --- | --- | --- | | www.alma-solarshop.be | Belgium | | 7 445 € | | www.alma-solarshop.nl | Netherlands | | 7 445 € | | www.solaris-store.com | France | | 8 120.63 € | | nordsolar.fi | Finland | | 11 625 € | [See 31 FoxESS offers](https://comparepv.com/offers?manufacturer=foxess&product_type=battery) [See 15 SMA Solar offers](https://comparepv.com/offers?manufacturer=sma-solar&product_type=battery) ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | ECS2900-H6 | SMA Home Storage 16.4 | Difference | | --- | --- | --- | --- | | Usable energy | 15.55 kWh | 16.40 kWh | 0.85 kWh apart | | Cycle life | 6000 cycles | 8000 cycles | +2000 cycles for SMA Home Storage 16.4 | | Max system capacity | 20.2 kWh | 16.4 kWh | +3.8 kWh for ECS2900-H6 | | Nominal energy | 17.28 kWh | 16.40 kWh | 0.88 kWh apart | | Depth of discharge | 90 % | 100 % | +10 pp for SMA Home Storage 16.4 | | Nominal voltage | 346 V | 480 V | 134 V apart | | Weight | 196.3 kg | 190.0 kg | -6.3 kg for SMA Home Storage 16.4 | | Min operating temperature | -20 °C | -10 °C | -10 °C for ECS2900-H6 | | Weight per kWh | 12.6 kg/kWh | 11.6 kg/kWh | -1.0 kg/kWh for SMA Home Storage 16.4 | | Round-trip efficiency | 95.0 % | 94.5 % | +0.5 pp for ECS2900-H6 | | Cycle test depth | 90 % | 100 % | 10 pp apart | | Max operating temperature | 55 °C | 50 °C | +5 °C for ECS2900-H6 | | Modules per stack | 2-7 | 1-5 | 2-7 vs 1-5 | | Operating voltage | 291.6-394.2 V | 450-540 V | 291.6-394.2 V vs 450-540 V | ## Every compared parameter | Parameter | ECS2900-H6 | SMA Home Storage 16.4 | | --- | --- | --- | | Usable energy | 15.55 kWh | 16.40 kWh | | Nominal energy | 17.28 kWh | 16.40 kWh | | Depth of discharge | 90 % | 100 % | | Max system capacity | 20.2 kWh | 16.4 kWh | | Modules per stack | 2-7 | 1-5 | | Continuous discharge power | - | 17.28 kW | | Continuous charge power | - | 17.28 kW | | Peak discharge power | - | - | | Power per kWh | - | 1.05 kW/kWh | | Round-trip efficiency | 95.0 % | 94.5 % | | Cycle life | 6000 cycles | 8000 cycles | | Cycle test depth | 90 % | 100 % | | Capacity at end of life | - | - | | Self-discharge | - | - | | Voltage class | High voltage | High voltage | | Nominal voltage | 346 V | 480 V | | Operating voltage | 291.6-394.2 V | 450-540 V | | Cell chemistry | LFP | LFP | | Active cell balancing | - | - | | Thermal management | - | - | | Inverter | None (battery only) | None (battery only) | | Inverter power | - | - | | Grid connection | - | - | | Backup power | - | - | | Weight | 196.3 kg | 190.0 kg | | Weight per kWh | 12.6 kg/kWh | 11.6 kg/kWh | | Dimensions | 830x570x380 mm | - | | Ingress protection | IP65 | IP65 | | Outdoor-rated | Yes | Yes | | Min operating temperature | -20 °C | -10 °C | | Max operating temperature | 55 °C | 50 °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 - [SMA Home Storage 16.4 vs BYD Battery-Box Premium HVM 16.6](https://comparepv.com/compare-batteries/sma-solar-technology-ag-sma-home-storage-16-4/byd-battery-box-premium-hvm-16-6) - 6 differences, the largest is usable energy - [SMA Home Storage 16.4 vs FoxESS HS17.5](https://comparepv.com/compare-batteries/sma-solar-technology-ag-sma-home-storage-16-4/foxess-hs17-5) - 10 differences, the largest is usable energy --- Source: https://comparepv.com/compare-batteries/fox-ess-ecs2900-h6/sma-solar-technology-ag-sma-home-storage-16-4 Not in this file, on the page: a written summary generated on request.