Sodium-ion high-voltage battery

Last verified 2026-10-06.

• Revolta's datasheet describes this 450 V home battery as built on lithium-free, cobalt-free sodium-ion cells with each cell controlled individually, and its June 2026 release describes a voltage multiplier architecture using a high-frequency transformer.
• The earlier homepage claim recorded on 25 September was availability from September with waitlist reservations. The maker FAQ reviewed on 6 October instead forecasts the first production batch in Q4 2026, expected from October and initially only within Germany; European distribution is planned for the first half of 2027. These are maker plans, not verified shipments or Australian availability. This page continues to treat the product as announced.
• The current linked datasheet remains preliminary (V0.11, September 2026), while the FAQ declares an earlier V0.10 technical basis. A final datasheet, governing warranty terms, exact system cycle-life evidence and system round-trip efficiency remain unresolved, so the product cannot be scored yet. The FAQ supplies a warranty headline and cell-cycle claim, but neither closes those documentary or measurement gates.
• Capacity figures differ across Revolta's own sources: the datasheet gives 2.0 kWh modules but a 2.0-22 kWh system, the product page gives 2.0 to 20 kWh, and the June release gives 2.2 kWh modules up to 22 kWh.
• The datasheet prints the module code as HV-2.0 NA while the product page prints HV-2.0 Na; both are shown here as printed and this record is not joined to any scored battery.
• Legal manufacturer as printed: Revolta AG, Oeserstr. 31c, 65934 Frankfurt a.M., Germany.
• The preliminary V0.11 sheet describes one to ten DC modules, each with 2.0 kWh usable energy and 450 V nominal voltage, with a control unit integrated into the last module. It prints 19 kg and 284 x 186 x 260 mm per module. Its system row still says 2.0-22 kWh despite the one-to-ten count and 2.0 kWh-per-module basis; the current product page and FAQ give 2.0-20 kWh. The inconsistent upper capacity is not silently corrected or used as a scored configuration.
• For each module, V0.11 prints continuous charging/discharging power of 0.6-1.2 kW depending on state of charge, up to 2.0 A, and operating voltage of 300-585 V DC. The system current limit is 20 A and the sheet gives a 1.2-12 kW system power row. The older-basis FAQ instead describes 300-600 V and 6-12 kW at maximum system size, depending on state of charge. These are separate preliminary disclosures, not one reconciled constant-power rating or AC output. Backup operation depends on an appropriate inverter and is not a built-in AC rating for this DC battery.
• The greater-than-95% efficiency appears under electrical data per module in V0.11. No charge/discharge measurement method, complete system boundary or system round-trip efficiency is established. Claims of nearly lossless balancing or percentage-point inverter gains are not a substitute for that measurement.
• The FAQ describes 4000 cycles for sodium battery cells according to manufacturer information. It does not identify an exact cell model or state retention endpoint, depth of discharge, temperature, rate or test protocol. That cell claim is not exact-system cycle life, warranty throughput or evidence of capacity remaining after 4000 cycles.
• The FAQ states a 10-year battery warranty headline but explicitly says the full warranty conditions are being prepared and will be available by the start of sales. Governing warranty terms are not recovered: covered configuration, warrantor obligations, commencement, retention/output basis, throughput conditions, registration, exclusions, transferability, claims, remedies, labour, freight and removal/reinstallation costs remain unresolved. The headline does not establish those entitlements.
• The maker describes three large sodium-ion cells with individual monitoring and balancing, a module-level BMS, and a voltage-multiplier topology using a high-frequency transformer. V0.11 lists individual temperature sensing, 10 mV cell monitoring precision, reverse-polarity protection, system current limiting, CO sensing and optical/acoustic alarms, plus no high voltage in standby and shutdown below 1 ms. The older-basis FAQ also describes high/low-voltage fuses, galvanic isolation in a fault and a pressure-relief valve. These are preliminary maker protection claims, not independent fire, fault-tolerance or field-reliability results.
• The preliminary sheet lists IEC 62619:2022, IEC 62477-1, CE and UN38.3 without a certificate identifier, report, issue date or jurisdictional approval join. Those entries do not independently verify approval. It states IP64 and natural-convection cooling; IP64 does not establish fire resistance or unrestricted outdoor installation.
• The FAQ recommends charging at 0 to 50°C and discharging at -10 to 50°C. It says low-temperature power is reduced and exact values are still being determined, with power also reduced at high temperature. These recommendations are on its stated V0.10 preliminary basis, not a verified final power-versus-temperature curve.
• V0.11 names serial communication between modules and the control unit, and CAN Bus 2.0, CAN FD and RS485 from the control unit to the inverter. Commissioning uses the Revolta app and Bluetooth BLE. The FAQ says monitoring is through the inverter app. These disclosures do not establish a public API, cloud-independent operation, firmware support term or security-update policy. The planned 2027 AC product is separate from this current DC architecture.

• Revolta AG, Sodium-ion high-voltage battery, Preliminary data sheet V0.11 (September 2026)https://revolta.tech/wp-content/uploads/2026/09/Revolta_datasheet_NaBatteryModule_HV-2.0_V0.11.pdf

  Establishes the product name, the module code HV-2.0 NA, the lithium-free and cobalt-free sodium-ion cells, individual control of each cell, the 450 V nominal voltage, the 2.0 kWh module and 2.0-22 kWh system figures, the module efficiency above 95 per cent, the preliminary status and the legal manufacturer.

• Revolta, Produktehttps://revolta.tech/produkte/

  Establishes that the product page prints the code as HV-2.0 Na and gives 2.0 kWh modules scaling to 20 kWh with one to ten modules.

• Revolta, homepagehttps://revolta.tech/

  Establishes the maker's stated market status: available from September, with modules reserved through a waitlist.

• Revolta AG press release via news aktuell, 19 June 2026https://www.presseportal.de/pm/182833/6297584

  Establishes the voltage multiplier architecture with a high-frequency transformer, the Intersolar Europe 2026 launch, and the 2.2 kWh module and 22 kWh system figures given at announcement.

• Revolta, FAQs, preliminary V0.10 basis and launch/warranty boundarieshttps://revolta.tech/faqs/

  Reviewed 6 October 2026. Ten-year warranty headline with full terms explicitly being prepared; 4000-cycle cell claim lacks exact test/retention scope. Planned Q4/October first German batch is not shipment verification. FAQ V0.10 voltage and capacity are kept separate from current linked V0.11.