A short clip circulating on social media shows a technician in a small workshop repairing the lithium-ion battery pack of a TVS iQube electric scooter. The pack modules are open, BMS boards and wiring are exposed, and the technician is fitting new LG-branded cylindrical cells in place of the originals. This piece isn’t about the person doing the work — it’s about the hazard picture the footage shows, and about the gap between what he’s doing and what the job actually calls for.

The work itself looks competent. The cell placement is methodical, the wiring is tidy, and gloves are in use throughout. That’s worth saying plainly, because the point here isn’t to embarrass someone with clearly steady hands and real familiarity with the pack layout. The point is that skill at the bench doesn’t substitute for the protective and procedural layer this kind of repair needs.

What’s missing, and why it matters

• No eye or face protection is visible. A cell that vents or arcs during handling throws hot electrolyte and particulate with no warning — safety goggles or a face shield are non-negotiable for this task, not optional.
• No insulated tooling is evident. An iQube-class pack runs in the 48–72V range; a stray tool bridging terminals at that voltage produces a real arc-flash event, not a spark.
• No indication of cell grading or matching before installation. Mixing cells of different age, capacity, or internal resistance with the surviving originals creates imbalance across the string — some cells get driven harder than others every charge cycle from that point forward.
• No visible fire-suppression provision for a lithium event specifically. Water makes a lithium fire worse; the workshop needs a Class D or lithium-rated extinguisher, or at minimum sand and distance, within reach before starting.
• No sign of BMS recalibration or verification after the swap. A BMS tuned for the original cells’ voltage curve won’t necessarily protect a pack with different cells wired into it.

None of this is a criticism of the technician’s manual skill. It’s a description of the difference between a confident repair and a controlled one. Someone doing this work well deserves to be doing it safely — proper PPE, insulated tools, a written procedure, and cell-matching equipment aren’t bureaucracy for its own sake here; they’re what keeps a skilled repair from becoming a thermal runaway incident.

Two separate compliance questions, not one

The first is domestic and vehicle-level. The iQube is an L-category electric vehicle in India, and its battery pack was type-approved under AIS-156, the MoRTH/ARAI standard covering BMS behaviour, thermal propagation, and overcharge/short-circuit protection at the pack level, mandatory since December 2022. A repair that changes the cells or alters how the BMS interacts with them takes the pack outside the configuration that AIS-156 approval was based on — the same logic that governs transport testing, just applied at the vehicle-certification layer instead.

AIS-156 Phase 2: Calibration Is Part of the Standard, Not an Afterthought

AIS-156 Phase 2, in force since March 2023, doesn’t stop at requiring a BMS — it requires the BMS’s active monitoring and thermal-propagation prevention to be calibrated to the specific chemistry and thermal footprint of the cells it’s protecting. Swapping in different cells without reflashing or recalibrating the BMS accordingly doesn’t just risk imbalance — it directly undermines the safeguard AIS-156 Phase 2 was written to guarantee.

The second is transport, and it’s where UN 38.3 comes in — but only if that pack, or one repaired the same way, is later moved as cargo: returned to a vendor, shipped for insurance assessment, exported, or similar. UN 38.3.2.1/38.3.2.2 sets out specific criteria for when a cell or battery counts as a new design type requiring retest: a change in electrode or electrolyte material, a change in protective devices (hardware or software — this covers the BMS), a change in safety design such as venting, a change in the number of component cells, a change in how the component cells are connected, or for rechargeable batteries specifically, more than a 20% change in Wh rating or more than a 20% increase in voltage.

An informal cell swap like the one in this video will trip at least one of those criteria almost every time — different cell count or arrangement, different BMS response, or both. That makes the repaired pack an untested design type for transport purposes, regardless of how well the individual cells themselves are UN 38.3 certified in isolation. The pack as reassembled has no test summary of its own.

None of this makes the repair itself illegal to perform for continued use in the same vehicle — that’s governed by domestic vehicle rules, not the transport code. But it does mean the pack can’t move as cargo under the original manufacturer’s paperwork, and the workshop doing this kind of repair needs PPE and process in place regardless of which regulation eventually applies to the pack’s next move.