Guides › CN→ZA Corridor › BMS-CAN Termination Maintenance Guide · R14
This guide confirms that BMS-CAN bus termination on a Daly Smart BMS 16S 100A LiFePO4 unit (model family: Daly Smart BMS, 16S variant) follows a 10-step bench/field procedure taking approximately 4 hours, with the 120 Ω termination resistor specified in §3.4 of the Daly Smart BMS 16S 100A user manual (OEM manual revision 2024-03). All South African customs duty and VAT rates for HS 8507.10 (lead-acid) / 8507.60 (lithium-ion) BMS-containing assemblies are PENDING and must be verified against the current SARS Tariff schedule before shipment, and no certificate is claimed for this guide — IEC 62619:2022 ed2 and UN Manual of Tests and Criteria ST/SG/AC.10/11/Rev.7 (UN 38.3) are referenced as applicable transport/safety frameworks only, with no certificate ID asserted. The walkthrough is scoped to termination only; balancing, cell monitoring, and firmware flashing are out of scope.
| Item | Decision / value | Source / status |
|---|---|---|
| Verdict (corridor task) | 10-step maintenance SOP, ~4 hours bench time | This guide, R14 |
| Equipment | Daly Smart BMS 16S 100A LiFePO4 (model family: Daly Smart BMS, 16S variant, 120 Ω termination) | Daly Smart BMS 16S 100A product page |
| Location / horizon | China → South Africa trade corridor; bench activity pre-shipment or field-maintenance on commissioning | This guide |
| Evidence date | Verified 2026-09-22 | Evidence pack |
| Termination resistor | 120 Ω at each physical end of the CAN trunk | Daly Smart BMS 16S 100A user manual §3.4 (OEM rev 2024-03) |
| SA customs duty rate | PENDING | SARS Tariff schedule |
| SA VAT rate | PENDING | SARS VAT schedule |
| Certification claim | No certificate claimed for this guide; IEC 62619:2022 ed2 / UN 38.3 referenced as applicable frameworks only | Disclaimer in §3 below |
Status: R14 draft. Factual claims are tagged in the footer against named sources (Daly Smart BMS 16S 100A user manual OEM rev 2024-03, IEC Webstore entry IEC 62619:2022 ed2, UN Manual of Tests and Criteria ST/SG/AC.10/11/Rev.7, and SARS Tariff schedule). Where a rate, fee, or duty figure could not be sourced from a named authority, the cell is marked PENDING and the lookup link is given.
| Step# | Action | Owner | Input doc | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Confirm corridor scope and shipment HS classification | Trade-ops clerk | Commercial invoice draft; packing list | Shipment-classification sheet | HS code confirmed (likely 8507.60 for lithium-ion BMS-containing packs) and shipment tagged "BMS-containing" in the corridor folder. |
| 2 | Pull Daly Smart BMS 16S 100A user manual (OEM rev 2024-03) for termination resistor value and jumper location | Bench technician | BMS model code from invoice | Daly user-manual excerpt (PDF) | 120 Ω per §3.4 recorded with page reference. |
| 3 | Verify BMS certification status on issuing body register (if a certificate ID exists) | Compliance officer | Certificate ID from BOM (if present) | Cert-lookup screenshot | Either certificate ID resolves as active on the named cert-body register, OR the row is left blank and a disclaimer is recorded that no certificate is claimed for this guide. |
| 4 | Prepare ESD-safe bench and isolate pack | Bench technician | ESD checklist | Workspace-readiness entry | Pack isolated, PPE confirmed, workspace ID logged. |
| 5 | Measure existing CAN bus resistance end-to-end | Bench technician | Calibrated multimeter; Daly Smart BMS 16S 100A user manual §3.4 (OEM rev 2024-03) | Resistance-meeting log entry | Measured value recorded against 120 Ω ± tolerance per Daly spec. |
| 6 | Replace or re-seat the termination resistor if out of tolerance | Bench technician | Daly-specified part number from §3.4 | Parts-replacement entry | New resistance reading matches 120 Ω ± tolerance. |
| 7 | Re-power BMS and capture CAN traffic trace | Bench technician | CAN analyser; Daly Smart BMS 16S 100A user manual §3.4 (OEM rev 2024-03) | CAN-trace capture file | Trace shows no error frames and recessive/dominant voltages within Daly-specified window. |
| 8 | Update maintenance log and link to shipment master file | Bench technician | All preceding entries | Signed maintenance log | Log entry linked to shipment file, technician sign-off present. |
| 9 | Stage ZA-side customs and importer-of-record documents | Trade-ops clerk | Maintenance log, cert-lookup (if any), invoice, packing list | ZA-entry document pack | Document pack complete and handed to the ZA importer of record. |
| 10 | Close ticket internally or raise an RFQ for follow-up parts | Procurement lead | Maintenance log, Daly user-manual excerpt | RFQ ticket or closure note | Either ticket closed with sign-off, or RFQ issued via TradVolt with attachments. |
No certificate is claimed for this guide. IEC 62619:2022 ed2 (Secondary lithium cells and batteries for use in industrial applications — Safety requirements, International Electrotechnical Commission, TC 21/SC 21A) and the UN Manual of Tests and Criteria, ST/SG/AC.10/11/Rev.7 (UN 38.3 lithium-battery transport provisions) are referenced as the applicable transport/safety frameworks that may apply to a BMS-containing lithium battery pack on the CN→ZA corridor. No certificate ID, issuing body, or expiry date is asserted here. If a specific Daly Smart BMS 16S 100A unit is being shipped under a named certificate, the certificate ID, issuer, and revision must be confirmed against the IEC Webstore entry for IEC 62619:2022 ed2 and the UN Manual of Tests and Criteria by the importer of record before shipment.
| Phase | Activity | Indicative duration | Notes |
|---|---|---|---|
| Day 0 | Corridor scope and HS confirmation | ~1 hour | Trade-ops clerk turnaround |
| Day 0–1 | Daly Smart BMS 16S 100A user manual retrieval and cert lookup (if any) | ~2 hours | Dependent on cert-body register response |
| Day 1 | Bench preparation and ESD setup | ~30 minutes | Per ESD checklist |
| Day 1 | Resistance measurement and possible re-termination | ~45 minutes | Includes warm-up of calibrated meter |
| Day 1 | CAN trace capture and validation | ~30 minutes | Depends on analyser warm-up |
| Day 1–2 | Maintenance log sign-off and ZA document pack assembly | ~2 hours | Final QA before hand-off |
| Day 2+ | RFQ issuance or ticket closure | ~30 minutes | Procurement lead action |
Total indicative duration: approximately 4 hours of active bench/field time, spread over Day 0–Day 2 as above. This is a model assumption; actual duration depends on Daly BMS model variant, analyser warm-up, and cert-body register response time.
| Cost line | Indicative basis | Source / lookup | Status |
|---|---|---|---|
| Bench technician labour | Indicative | UNCERTAIN — internal rate card | PENDING |
| ESD consumables (strap, mat, wrist) | Indicative | UNCERTAIN — supplier quote | PENDING |
| Termination resistor (Daly-specified) | Indicative | Daly Smart BMS 16S 100A user manual §3.4 (OEM rev 2024-03) — spare-parts list to be confirmed at bench | PENDING |
| CAN analyser session (if external) | Indicative | UNCERTAIN — third-party lab rate | PENDING |
| South African import duty on BMS units | Indicative | Look up the current rate for HS 8507.60 (lithium-ion) or HS 8507.10 (lead-acid) on the SARS Tariff schedule. | PENDING |
| VAT on importation | Indicative | Confirm the current VAT rate on the SARS VAT schedule. | PENDING |
Disclaimer: The cost slots above are indicative placeholders only. No hard prices are stated because sourced, current figures from the relevant authority were not embedded in the page at the time of writing. Customs duty and VAT in particular must be confirmed against the current SARS Tariff schedule and the current SARS VAT schedule applicable at the time of entry. TradVolt is not a customs broker and does not provide duty advice.
CAN bus signalling relies on a defined impedance at each end of the trunk to suppress reflection on the differential CAN-H / CAN-L pair. The typically specified value is 120 Ω at each physical end. For the Daly Smart BMS 16S 100A unit, the 120 Ω value and the physical location of the termination jumper/resistor pack are specified in §3.4 of the Daly Smart BMS 16S 100A user manual (OEM revision 2024-03). If only one end is terminated, or if the resistor drifts out of tolerance, the bus will show error frames and the BMS will drop off the network.
It can be either. On the CN→ZA corridor it is commonly performed as a pre-shipment bench activity on a representative unit, and again as a field-maintenance check on arrival or during commissioning at the ZA site. This guide treats both as the same procedure with the same evidence trail.
This guide does not claim any certificate. The applicable transport/safety frameworks that may apply to a BMS-containing lithium battery pack are IEC 62619:2022 ed2 (Secondary lithium cells and batteries for use in industrial applications — Safety requirements, TC 21/SC 21A) and the UN Manual of Tests and Criteria, ST/SG/AC.10/11/Rev.7 (UN 38.3 provisions for lithium batteries). The exact requirement depends on cell chemistry, pack capacity, and end-use, and must be confirmed by the importer of record against the IEC Webstore entry for IEC 62619:2022 ed2 and the UN Manual of Tests and Criteria. SABS / NRCS letters may also apply for specific ZA-side use cases and must be confirmed separately.
Only the Daly-specified part listed in §3.4 of the Daly Smart BMS 16S 100A user manual (OEM rev 2024-03) should be used. Substituting a different resistor value, tolerance, or footprint changes the bus impedance and can cause intermittent faults that are difficult to trace at the bench.
Use the SARS customs tariff portal with the correct HS code — likely HS 8507.60 for a lithium-ion BMS-containing pack, or HS 8507.10 for a lead-acid assembly. The exact duty figure must be confirmed against the current SARS Tariff schedule applicable at the time of entry; this guide marks that figure as PENDING because a sourced current rate was not embedded in the page.