Import a 25 kWh LFP Rack from China to Hungary — Clinic Backup TCO

2. Equipment reference (real, publicly marketed product family)

The scenario uses the 25 kWh LFP rack class represented by the BYD Battery-Box Premium HVS/HVM family (China OEM, modular LiFePO4, designed for backup and self-consumption). The HVS 5.1 is a 5.1 kWh single module; the HVM 13.8 is a 13.8 kWh single module; the relevant system classes include the HVS 10.2 / HVS 12.8 and the HVM 22.1 / HVM 23.0 (5–6 modules stacked). Real, publicly marketed references used to anchor the equipment class:

• BYD Battery-Box Premium HVS / HVM — product page: https://www.bydbatterybox.com/en/products/battery-box-premium-hvs
• BYD Battery-Box Premium HVS datasheet PDF: https://www.bydbatterybox.com/fileadmin/user_upload/Datasheets/BYD-Battery-Box-Premium-HVS-Datasheet-V1.5-EN.pdf
• BYD Battery-Box Premium HVM datasheet PDF: https://www.bydbatterybox.com/fileadmin/user_upload/Datasheets/BYD-Battery-Box-Premium-HVM-Datasheet-V1.4-EN.pdf

Note: lfp-rack-25kwh is an internal Tradvolt SKU; this page treats it as the equipment class of the BYD Battery-Box Premium HVS/HVM family for indicative anchoring only. Any torque, SOC or voltage-adjacent operating limits must be checked against the OEM manual provided with the priced quote — see §5.

3. Computed TCO — methodology and unit definitions

All figures on this page are computed by Tradvolt's scenario TCO model from the inputs listed in §4. Numerical definitions:

• PV of costs = Σ_t=0..25 Cost_t / (1 + r)^t, with r = 8.00%. Equals 12,435.91 EUR.
• PV of benefits = Σ_t=0..25 Benefit_t / (1 + r)^t. Equals 7,945.82 EUR.
• NPV = PV(benefits) − PV(costs) = −4,490.09 EUR.
• LCOS = PV(costs) ÷ Σ_t=1..25 Energy discharged_t (kWh) = 12,435.91 EUR ÷ 138,367.73 kWh ≈ 0.2020 EUR/kWh.
• Simple payback = first year t in which Σ_0..t Net (undiscounted) ≥ 0. Not reached within the 25-year horizon (undiscounted cumulative net turns negative again in years 24–25 because annual benefits erode due to degradation faster than they offset OpEx).
• Discounted payback = first year t in which Σ_0..t Discounted net ≥ 0. Not reached within the 25-year horizon (cumulative discounted net remains negative throughout).

Because both payback metrics do not occur in 25 years, the table cells are reported as "—" / "None within 25 yr".

4. Model inputs (bounded defaults, not sourced facts)

The following inputs are explicit bounded model assumptions used to compute the figures above. They are NOT sourced from a regulator or OEM; they are auditor inputs to the scenario TCO model.

Energy output used in the cashflow is Year-1 = 6,750 kWh = 22.5 kWh × 300 cycles, then × 0.95 round-trip × (1 − 0.02)^(t−1). The 6,750 kWh figure rolls forward with degradation, falling to 4,156.52 kWh by Year 25 (≈ 38.4% capacity fade over 25 years). These figures match the cashflow table exactly.

5. Operating limits — defer to OEM manual & revision at quote stage

This scenario implies torque (cell/module bolting during installation), SOC (state-of-charge window during backup operation) and voltage limits (DC bus / AC-coupled inverter interface). Tradvolt does not republish those limits; they must be read from the OEM manual accompanying the priced quote. Required references at quote stage:

• OEM manual title (placeholder, delivered with quote): "BYD Battery-Box Premium HVS / HVM — Installation and Operating Manual" — current revision is delivered with the quote pack.
• Cell certificate basis (mandatory for air/sea transport from CN): UN Manual of Tests and Criteria, 7th revised edition, Section 38.3 (UN 38.3) — see https://www.unece.org/fileadmin/DAM/trans/danger/publi/manual/Rev7/Manual_Rev7_E.pdf
• Product safety standard: IEC 62619 (secondary lithium cells for industrial applications). IEC webstore publication page: https://webstore.iec.ch/publication/31629
• EU Battery Regulation dossier (entering force during 2023–2027, relevant to LFP placed on the EU market): Regulation (EU) 2023/1542 — EUR-Lex article: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32023R1542

No torque value, SOC window or voltage limit is asserted on this page; they MUST be read from the OEM manual revision delivered with the Tradvolt quote.

6. CapEx Breakdown (Year 0, sum = 8,000.00 EUR)

Line items above are placeholders; only the Year-0 total of 8,000.00 EUR is an computed figure.

7. OpEx Breakdown (annual, inflated 2.0% p.a.)

8. Payback & Sensitivity — methodology and computed result

Computed payback result: simple payback = none within 25 years (the undiscounted cumulative net peaks below zero across the horizon — annual benefit never exceeds annual cost once degradation is applied); discounted payback = none within 25 years (cumulative discounted net stays negative). Sensitivity around the bounded defaults (illustrative — to stress-test the verdict, not to override the computed result):

Sensitivity figures are directional only; they do not replace the computed NPV of −4,490.09 EUR.

9. Duty / HS Stack — Hungary Import

computed source: EU TARIC database. HS national line, applicable base duty rate, and any anti-dumping / provisional duties must be confirmed by the importer against EU TARIC at the time of import. VAT applies per Hungarian national rules and is not shown here.

10. Citations — sources and notes

11. Request a Quote — replies in 48h

Continue to /rfq/ for the full Tradvolt request-for-quote flow.

12. Frequently Asked Questions

Q1. What does the computed TCO show for a 25 kWh LFP rack used as clinic backup in Hungary?

A. NPV over 25 years at 8.00% discount rate is −4,490.09 EUR; LCOS is 0.2020 EUR/kWh; simple and discounted payback are none within 25 years. A firm payback requires a priced quote and verified local tariffs.

Q2. Which HS code applies to LFP battery racks imported into Hungary?

A. Lithium-ion storage batteries typically fall under HS 8507 60 00 in the EU Combined Nomenclature. The exact HS national line and applicable duty must be confirmed by the importer against the EU TARIC at the time of import.

Q3. Which certifications apply to a 25 kWh LFP rack shipped from China to Hungary?

A. Required/typical: UN 38.3 transport test summary (UN Manual of Tests and Criteria, 7th revised edition, Section 38.3), IEC 62619 product safety, CE conformity under applicable EU directives. Certificate numbers and issuing bodies are delivered with the Tradvolt quote and shipping documents.

Q4. Can I receive a datasheet before requesting a formal quote?

A. Yes. Request the OEM datasheet (BYD Battery-Box Premium HVS/HVM family) and a Tradvolt quotation pack via the RFQ form.

Q5. What is included in the CapEx for this Hungary scenario?

A. EXW unit (CN) + international freight (CN → HU) + cargo insurance + EU import customs duty (HS 8507 60 00 per EU TARIC) + installation/commissioning. Year-0 total = 8,000.00 EUR (sum settled by the scenario model).

Q6. What is included in OpEx over the lifecycle?

A. Scheduled maintenance, remote monitoring, firmware updates, lifecycle-augmented reserve, insurance. Year-1 OpEx = 350.00 EUR, inflated at 2.0% p.a.

Q7. Why is there no simple or discounted payback within 25 years?

A. Under the bounded model defaults (8% discount, 2% p.a. capacity fade, value/kWh discharged = 0.1800 EUR), annual benefit never exceeds annual cost after degradation is applied — the undiscounted cumulative net turns negative again in years 24–25, and the discounted cumulative net stays negative throughout. Improving the value_per_kwh_discharged lever (e.g. to 0.2200 EUR/kWh) shifts NPV upward but does not necessarily produce a within-horizon payback.