Unimasters | 19/08/2026
A driver stands at the gate of a BESS construction site outside Plovdiv at 19:40 on a Friday evening. The 20-foot high-cube container on the trailer shows a dent near the lower corner casting, perhaps 15 centimetres across. The site supervisor is not certain the dent was there when the container left Burgas that morning. The driver holds out a CMR consignment note and a pen. The signature that follows in the next thirty seconds will determine whether a six-figure claim survives or dies quietly in a file marked "unrecoverable." The dent is not the problem. The signature is.
The procedural moment this episode owns is the notice of loss or damage at delivery, and the deadlines that begin running the instant cargo changes hands. Under the CMR Convention (Geneva 1956), the consignee's written reservation on the consignment note is the only act that preserves the right to claim against the road carrier. Under the maritime regime governed by the Hague-Visby Rules, the window is even shorter. The person holding the pen is the site representative who signs for receipt. That signature, clean or annotated, is the first document in every claim file and often the last one that matters.
Two legal regimes govern BESS cargo arriving at a CEE construction site: the maritime leg (factory gate to discharge port) and the road leg (port to site). Each has its own notice rules, and missing either can extinguish recovery against the responsible carrier.
CMR Article 30 establishes the notice framework for international road carriage:
Apparent loss or damage (visible on external inspection at delivery) must be reserved in writing on the consignment note at the moment of delivery. If the consignee signs without reservation, the cargo is presumed to have been delivered in the condition described in the consignment note. This presumption is rebuttable, but the burden shifts entirely to the claimant, and in practice it is rarely overcome.
Non-apparent loss or damage (discovered after delivery) must be notified in writing to the carrier within 7 days of delivery, Sundays and public holidays excluded. The 7-day period is not "7 working days" in the sense that Saturdays are skipped; Saturdays count, only Sundays and gazetted public holidays do not.
Delay in delivery must be reserved within 21 days of the cargo being placed at the consignee's disposal (CMR Article 30(3)).
The written reservation must be entered on the consignment note itself or, for non-apparent damage, sent separately to the carrier. A verbal complaint, an email to the forwarder, or a note in an internal site log does not satisfy the convention.
For the maritime leg, the Hague-Visby Rules (as enacted in most CEE jurisdictions through national legislation) set tighter deadlines:
Apparent loss or damage must be notified in writing to the carrier or its agent at the port of discharge before or at the time of removal of the goods into the custody of the person entitled to delivery.
Non-apparent loss or damage must be notified within 3 days of delivery.
If no notice is given, removal of the goods is prima facie evidence that the carrier delivered them as described in the bill of lading. Unlike CMR, the Hague-Visby presumption is explicitly rebuttable, but the evidentiary burden on the claimant becomes severe.
Cargo insurance policies (Institute Cargo Clauses A, B, or C) require prompt notification to the insurer of any loss or damage. The policy wording typically states "immediate notice" or "as soon as the insured becomes aware." While insurers rarely reject claims solely for late notification if the underlying carrier notice was timely, delayed insurer notice can complicate survey arrangements and prejudice subrogation rights. Best practice: notify the insurer within 24 hours of discovering damage, even if the full extent is unknown.
Claims do not fail because insurers are adversarial or carriers are evasive. They fail because the cargo side's own procedural steps were missed in the first 72 hours. The following patterns recur in CEE BESS logistics.
The most common claim-killer is the simplest: a site representative signs the CMR consignment note without any written reservation, even though damage is visible. The reasons are human. The driver has been waiting. The site team wants to start unloading before dark. The dent looks minor. Nobody wants to delay the project over a cosmetic issue.
The legal consequence is immediate. Under CMR Article 30(1), the clean signature creates a presumption that the cargo was delivered in the condition stated in the consignment note. The carrier's liability is not extinguished, but the claimant must now prove that the damage occurred during carriage, not before loading or after delivery. For a BESS container that passed through a transshipment hub (Piraeus or Istanbul), was handled by terminal equipment at Burgas, and travelled 300 kilometres by road, proving the exact moment of damage without a contemporaneous reservation is often impossible.
The fix is mechanical: any visible anomaly, however minor, must be noted on the consignment note before signing. The note does not need to be a damage assessment. "Dent observed lower left corner casting, approx. 15 cm, cause unknown" is sufficient. The reservation preserves the right to investigate; the clean signature forecloses it.
Non-apparent damage discovered after delivery must be notified within 7 days, Sundays and public holidays excluded. The exclusion of Sundays but not Saturdays catches teams who assume "7 working days" means Monday-to-Friday counting. A container delivered on a Monday must be notified by the following Monday if no public holidays intervene, not by the following Wednesday.
For BESS containers, non-apparent damage often means internal issues discovered during commissioning: a battery module that fails to communicate with the BMS, a cooling system that shows signs of impact stress, a connector that was sheared during transport. Commissioning teams focused on electrical integration may not flag transport damage until day 8 or 9. By then, the CMR window has closed.
The fix is procedural: the site team must conduct a transport-condition inspection within 48 hours of delivery, separate from the commissioning sequence, and document any anomalies in writing to the road carrier before the 7-day deadline.
The Hague-Visby 3-day window for non-apparent damage runs from delivery at the discharge port, not from arrival at the construction site. For a BESS container discharged at Burgas on a Monday and delivered to a site near Sofia on Thursday, the maritime notice window closes on Thursday, the same day the container arrives at site. If the site team discovers damage on Friday, the maritime carrier's presumption of good delivery is already in place.
This matters because the maritime leg is where the heaviest handling occurs: gantry cranes at the load port, transshipment at Piraeus or Istanbul, discharge at Burgas. If the damage occurred at sea or during port handling, the road carrier is not liable, and the maritime carrier's liability is now presumptively excluded.
The fix requires coordination between the port agent, the customs broker, and the site team. A transport-condition check at port discharge, before the container is loaded onto the truck, preserves the maritime notice window. The forwarder can arrange this inspection, though it is not mandatory. Where the inspection reveals damage, written notice to the sea carrier or its agent must be given before the container leaves the port.
BESS containers are produced and sealed at the factory with battery modules installed during the production process. The container itself is the battery system, not a shipping container stuffed with cargo. Internal securing materials, shock indicators, tilt watches, and temperature loggers are part of the evidence chain.
When site teams discard these materials during unloading without photographing or preserving them, they destroy the evidence that would establish whether damage occurred during transport or was pre-existing. A shock indicator that triggered during the sea leg is powerful evidence against the maritime carrier. A shock indicator that was never photographed is nothing.
The fix is a standing site instruction: all internal securing materials, indicators, and loggers are photographed in situ before removal and retained for 30 days. The photographs are timestamped and stored with the delivery documentation.
Thirty seconds of hesitation can mean six figures of liability.
Cargo insurers have subrogation rights against carriers. To exercise those rights, they need timely notice, access to the cargo for survey, and preserved evidence. A claimant who notifies the insurer two weeks after delivery, after the CMR window has closed and the packaging has been discarded, has not breached the policy, but has made the insurer's subrogation claim nearly impossible.
The practical consequence: the insurer pays the claim (if the policy responds), but the premium history reflects a loss that could have been recovered. Over multiple projects, this pattern increases insurance costs for the entire BESS logistics programme.
A 230 MWh BESS project in Bulgaria received a container at site with visible impact damage to the corner casting. The site supervisor, under pressure to maintain the commissioning schedule, signed the CMR consignment note without reservation. The damage was photographed internally but not noted on the transport document.
Three days later, commissioning revealed that two battery modules in the affected corner had suffered internal damage. The procurement team notified the road carrier on day 4, within the 7-day window for non-apparent damage. The carrier's insurer rejected the claim on the grounds that the external damage was apparent at delivery and should have been reserved at that moment. The internal module damage, they argued, was consequential to the external impact, and the failure to reserve the external damage extinguished the right to claim for the internal damage.
The project's cargo insurer paid the claim under the all-risks policy (ICC(A)), but the subrogation recovery against the road carrier failed. The statutory liability limit under CMR Article 23 is 8.33 SDR per kilogram of gross weight lost or damaged. For a 43-ton container, the maximum carrier liability would have been approximately 358,000 SDR. That recovery was forfeited by a signature that took three seconds.
The lesson is not that the carrier was right or wrong on the merits. The lesson is that the merits were never tested because the procedural step was missed.
Site team: Establish a written protocol that no CMR consignment note is signed without a visual inspection of the container exterior. Any anomaly, however minor, is noted on the consignment note before signature. The protocol names the authorised signatories and requires them to have a camera or phone available at every delivery.
Project office: Confirm with the forwarder that a transport-condition check will be conducted at port discharge (Burgas for Bulgarian projects) before the container is loaded onto the truck. This check is not mandatory, but it preserves the maritime notice window and creates a baseline for the road leg.
Forwarder: Provide the site team with the carrier's contact details for written notices (road carrier and sea carrier or their agents). The site team should not have to search for an address when the 7-day clock is running.
If non-apparent damage is discovered after delivery, send written notice to the road carrier before the 7-day deadline (Sundays and public holidays excluded). The notice should:
Copy the insurer and the forwarder on the notice.
Q: What is the deadline for notifying the road carrier of visible damage to a BESS container?
A: Under CMR Article 30(1), apparent damage must be reserved in writing on the consignment note at the moment of delivery. There is no grace period; the reservation must be made before signing for receipt.
Q: How many days do I have to notify the road carrier of damage discovered after delivery?
A: CMR Article 30(1) requires written notice within 7 days of delivery, with Sundays and public holidays excluded. Saturdays count toward the 7 days. Missing this deadline creates a presumption that the cargo was delivered in good condition.
Q: What is the notice deadline for damage on the sea leg under Hague-Visby Rules?
A: For non-apparent damage, written notice must be given to the sea carrier or its agent within 3 days of delivery at the discharge port (e.g., Burgas). For apparent damage, notice must be given before or at the time of removal from the port.
Q: What should I write on the CMR consignment note if I see damage at delivery?
A: Use factual, descriptive language: "Dent observed lower left corner casting, approx. 15 cm, cause unknown." Do not speculate on severity or origin. The reservation preserves the right to investigate; it does not need to be a full damage assessment.
Q: When must I notify my cargo insurer of transport damage?
A: Best practice is within 24 hours of discovering any damage, even if the full extent is unknown. Prompt notification allows the insurer to arrange a survey and preserves subrogation rights against the carrier.
Q: What evidence should the site team preserve after a BESS container delivery?
A: Photograph all shock indicators, tilt watches, temperature loggers, and internal securing materials in situ before removal. Retain these materials for at least 30 days. Timestamped photographs and the annotated consignment note form the core of the evidence file.
Q: What is the maximum liability of a road carrier under CMR for damaged BESS cargo?
A: CMR Article 23 limits carrier liability to 8.33 SDR per kilogram of gross weight lost or damaged. For a typical 43-ton BESS container, this equates to approximately 358,000 SDR. However, this recovery is only available if the notice requirements under Article 30 have been satisfied.
