How much usable energy does the Fox ESS G-MAX GM215kWh-100kW-2h store?

215 kWh (manufacturer page, fox-ess.com, read 28 Oct 2026), for this configuration: Single all-in-one outdoor cabinet incl. 100 kW PCS, 215 kWh.

What is the round-trip efficiency of the Fox ESS G-MAX GM215kWh-100kW-2h?

89 % (datasheet, d4o2fvgnpv65m.cloudfront.net, read 28 Oct 2026).

What warranty does the Fox ESS G-MAX GM215kWh-100kW-2h have?

10 years, 1,492 MWh of throughput, 70 % of capacity at the end (manufacturer page, fox-ess.com, read 28 Oct 2026). The warranty document's own terms decide which limit comes first.

Does the Fox ESS G-MAX GM215kWh-100kW-2h include an inverter?

Yes, it has an integrated power conversion system (PCS) rated 100 kW (datasheet, d4o2fvgnpv65m.cloudfront.net, read 28 Oct 2026).

How much does the Fox ESS G-MAX GM215kWh-100kW-2h cost?

Public listings read on 28 Oct 2026 put it at €44,289.00 per system, hardware as listed (source: aceflex.de; the Prices section gives each listing's VAT basis and contents). Listed prices are snapshots, not offers.

Fox ESS

G-MAX GM215kWh-100kW-2h

Single all-in-one outdoor cabinet incl. 100 kW PCS, 215 kWh

LFP 3.2 V / 280 Ah cells; 4 x 53.76 kWh liquid-cooled packs

Short answer

The Fox ESS G-MAX GM215kWh-100kW-2h is an LFP C&I battery cabinet (as specified: Single all-in-one outdoor cabinet incl. 100 kW PCS, 215 kWh). Usable energy: 215 kWh. Max. discharge power: 100 kW. Round-trip efficiency: 89 %. Warranty: 10 years.

Each figure is in the table below with its source and the day it was read.

Specifications

Spec	Value	Source
Chemistry	LFP	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Usable energy	215 kWhEU warranty v4.0 refers to 'Usable Energy 215 kWh'; datasheet DOD 0~100%	fox-ess.comManufacturer page · read 28 Oct 2026
Nominal energy	215 kWh	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Max. discharge power	100 kWRated output 100 kW, peak 110 kW (AC)	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Max. charge power	100 kWAC rated power of integrated PCS (peak 110 kW)	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
C-rate	0.47 Cderived: 100 kW / 215 kWh; model suffix '2h'	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Round-trip efficiency	89 %'Round Trip Efficiency >89%'; all-in-one system so likely AC-side, but basis not stated	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Depth of discharge	100 %'DOD 0 ~ 100'	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Cycle life	8,000 cyclesConditions: Cycle Life >=8000@70%EOL; temp/C-rate not stated	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Warranty	10 yearsEU/UK etc. B2B warranty v4.0 (28 Jul 2026): performance 10 y; PCS/fire/BMS 5 y, cooling/EMS 3 y. Requires Fox cloud connection.	fox-ess.comManufacturer page · read 28 Oct 2026
Warranty cycles	unavailableWarranty assumes 2 cycles/day but states no cycle cap	Not published
Warranty throughput	1,492 MWhSystem-level discharge throughput, whichever first with 10 y / 70%. A memodo-hosted older copy reportedly listed 1,141.55 MWh (not verified).	fox-ess.comManufacturer page · read 28 Oct 2026
Capacity at end of warranty	70 %	fox-ess.comManufacturer page · read 28 Oct 2026
Nominal voltage	unavailableDatasheet gives operating voltage range 672~876 V only	Not published
Operating temperature	−25 to 55 °C	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Dimensions (W × D × H)	1,040 × 1,500 × 2,200 mm	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Weight	2,500 kg'<2500'	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Ingress protection	IP55Battery pack IP67; C4 corrosion (C5 optional)	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Integrated inverter (PCS)	Yes, 100 kW	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Scalability	Datasheet: 'Capable of parallel connection upgrades'; max count not stated (distributors cite 10 on-grid / 5 off-grid, not verified)	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Certifications	IEC 62619, IEC 60730-1 Annex H, IEC 62477-1, IEC 61000-6-2, IEC 61000-6-4, UN 38.3, UL 9540A, CEI 0-21, CEI 0-16, EN 50549-1, EN 50549-2, EN 50549-10, TOR Type A, C11/10, G99	d4o2fvgnpv65m.cloudfront.netDatasheet · read 28 Oct 2026
Compatible inverters	unavailableN/A: integrated PCS	Not published

Datasheetd4o2fvgnpv65m.cloudfront.netversion V1.5 · dated 2025-09-04 · read 28 Oct 2026

Notes

English datasheet copy carries distributor stamp (VDH Solar, NL). NL datasheet V1.1 (2025-11-27) exists but download returned empty. Liquid cooling, aerosol fire protection.

Sold in: EU

Prices

€44,289.00 per system — AceFlex (DE) listing; webshop net price excl. 19% German VAT; hardware only, no installation/commissioning/EMS/grid connection (Distributor, read 28 Oct 2026)Single listing.

Listing	Price	VAT and contents	Source
Fox ESS G-Max GM215kWh-100kW-2hAceFlex (aceflex.de) · DE	€44,289.00per system	excl. 19% MwSt (DE); product pages note 0% under §12(3) UStG only for storage at/near residential/public buildings, otherwise 19%. C&I cabinet 100 kW (per title)	aceflex.deDistributor · read 28 Oct 2026

Listed prices are snapshots of public pages, not offers, and leave out installation, commissioning and shipping unless the listing says otherwise.

Questions

How much usable energy does the Fox ESS G-MAX GM215kWh-100kW-2h store?: 215 kWh (manufacturer page, fox-ess.com, read 28 Oct 2026), for this configuration: Single all-in-one outdoor cabinet incl. 100 kW PCS, 215 kWh.
What is the round-trip efficiency of the Fox ESS G-MAX GM215kWh-100kW-2h?: 89 % (datasheet, d4o2fvgnpv65m.cloudfront.net, read 28 Oct 2026).
What warranty does the Fox ESS G-MAX GM215kWh-100kW-2h have?: 10 years, 1,492 MWh of throughput, 70 % of capacity at the end (manufacturer page, fox-ess.com, read 28 Oct 2026). The warranty document's own terms decide which limit comes first.
Does the Fox ESS G-MAX GM215kWh-100kW-2h include an inverter?: Yes, it has an integrated power conversion system (PCS) rated 100 kW (datasheet, d4o2fvgnpv65m.cloudfront.net, read 28 Oct 2026).
How much does the Fox ESS G-MAX GM215kWh-100kW-2h cost?: Public listings read on 28 Oct 2026 put it at €44,289.00 per system, hardware as listed (source: aceflex.de; the Prices section gives each listing's VAT basis and contents). Listed prices are snapshots, not offers.

Would this battery pay back on your site? Upload a year of meter data and the bill; Zorowatt rebuilds the bill and sizes the battery.

Try it free Pricing

More C&I cabinets

AlphaESS STORION-H50-G3 AlphaESS STORION-LC-TB125 Deye GE-F60 Dyness DH200F E3/DC (HagerEnergy GmbH) qntm (Gewerbekraftwerk)FENECON Commercial 92 (1 inverter, 5 towers)FENECON Industrial S GoodWe Lynx C GW100KWH-D-10 All batteries