--- title: "FoxESS ECS2900-H4 vs SMA Home Storage 9.8 - Battery Comparison | ComparePV" description: "Compare FoxESS ECS2900-H4 vs SMA Home Storage 9.8 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-h4/sma-solar-technology-ag-sma-home-storage-9-8" updated: 2026-01-11 --- # FoxESS ECS2900-H4 vs SMA Home Storage 9.8 15 differences, and they point both ways The largest is usable energy: 0.53 kWh apart. 5 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 ECS2900-H4](https://comparepv.com/battery/fox-ess-ecs2900-h4) | [SMA Home Storage 9.8](https://comparepv.com/battery/sma-solar-technology-ag-sma-home-storage-9-8) | | Manufacturer | FoxESS | SMA Solar | | Usable energy | 10.37 kWh | 9.84 kWh | | Cells and voltage | LFP HV | LFP HV | ## Price offers | Shop | Country | ECS2900-H4 | SMA Home Storage 9.8 | | --- | --- | --- | --- | | www.alma-solarshop.be | Belgium | | 4 469 € | | www.alma-solarshop.nl | Netherlands | | 4 469 € | | www.solaris-store.com | France | | 4 869 € | | nordsolar.fi | Finland | | 7 125 € | [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-H4 | SMA Home Storage 9.8 | Difference | | --- | --- | --- | --- | | Usable energy | 10.37 kWh | 9.84 kWh | 0.53 kWh apart | | Cycle life | 6000 cycles | 8000 cycles | +2000 cycles for SMA Home Storage 9.8 | | Max system capacity | 20.2 kWh | 16.4 kWh | +3.8 kWh for ECS2900-H4 | | Nominal energy | 11.52 kWh | 9.84 kWh | 1.68 kWh apart | | Depth of discharge | 90 % | 100 % | +10 pp for SMA Home Storage 9.8 | | Nominal voltage | 230 V | 288 V | 58 V apart | | Weight | 132.3 kg | 114.0 kg | -18.3 kg for SMA Home Storage 9.8 | | Min operating temperature | -20 °C | -10 °C | -10 °C for ECS2900-H4 | | Weight per kWh | 12.8 kg/kWh | 11.6 kg/kWh | -1.2 kg/kWh for SMA Home Storage 9.8 | | Round-trip efficiency | 95.0 % | 94.5 % | +0.5 pp for ECS2900-H4 | | Cycle test depth | 90 % | 100 % | 10 pp apart | | Max operating temperature | 55 °C | 50 °C | +5 °C for ECS2900-H4 | | Modules per stack | 2-7 | 1-5 | 2-7 vs 1-5 | | Operating voltage | 194.4-262.8 V | 270-324 V | 194.4-262.8 V vs 270-324 V | | Dimensions | 590x570x380 mm | 1455x610x215 mm | 590x570x380 mm vs 1455x610x215 mm | ## Every compared parameter | Parameter | ECS2900-H4 | SMA Home Storage 9.8 | | --- | --- | --- | | Usable energy | 10.37 kWh | 9.84 kWh | | Nominal energy | 11.52 kWh | 9.84 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 | - | 10.37 kW | | Continuous charge power | - | 10.37 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 | 230 V | 288 V | | Operating voltage | 194.4-262.8 V | 270-324 V | | Cell chemistry | LFP | LFP | | Active cell balancing | - | - | | Thermal management | - | - | | Inverter | None (battery only) | None (battery only) | | Inverter power | - | - | | Grid connection | - | - | | Backup power | - | - | | Weight | 132.3 kg | 114.0 kg | | Weight per kWh | 12.8 kg/kWh | 11.6 kg/kWh | | Dimensions | 590x570x380 mm | 1455x610x215 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-H4 vs BYD Battery-Box Premium HVS 10.2](https://comparepv.com/compare-batteries/fox-ess-ecs2900-h4/byd-battery-box-premium-hvs-10-2) - 15 differences, the largest is usable energy - [FoxESS ECS2900-H4 vs Dyness Tower T10](https://comparepv.com/compare-batteries/fox-ess-ecs2900-h4/dyness-tower-t10) - 11 differences, the largest is usable energy - [FoxESS ECS2900-H4 vs Huawei LUNA2000-10-S0](https://comparepv.com/compare-batteries/fox-ess-ecs2900-h4/huawei-luna2000-10-s0) - 11 differences, the largest is usable energy - [SMA Home Storage 9.8 vs Pylontech Force H2 (3 modules)](https://comparepv.com/compare-batteries/sma-solar-technology-ag-sma-home-storage-9-8/pylontech-force-h2-3-modules) - 9 differences, the largest is usable energy - [SMA Home Storage 9.8 vs FoxESS HS10](https://comparepv.com/compare-batteries/sma-solar-technology-ag-sma-home-storage-9-8/foxess-hs10) - 9 differences, the largest is usable energy --- Source: https://comparepv.com/compare-batteries/fox-ess-ecs2900-h4/sma-solar-technology-ag-sma-home-storage-9-8 Not in this file, on the page: a written summary generated on request.