Vethy VS02 PRO lithium pack swap procedure: 200Ah LFP replacement

• Table of Contents

1. Safety lockout and BMS disconnect sequence
2. Mechanical pack removal
3. Replacement pack commissioning
4. V-FMSG-24 telematics re-pairing and warranty logistics

The integrated 200 Ah LiFePO4 lithium pack in Vethy VS02 PRO is designed for ~3,500 charge cycles (typical 8-10 year fleet service life) but will eventually require replacement at end-of-life or as warranty exchange. This procedure documents the field-service swap process for VS02 PRO 200Ah LFP pack — covering safety lockout, BMS disconnect sequence, mechanical removal, replacement pack commissioning, V-FMSG-24 telematics re-pairing and warranty logistics. Procedure designed for trained fleet service technicians or Vethy-authorized service partners.

Safety lockout and BMS disconnect sequence

Before any lithium pack work: (1) Park vehicle in well-ventilated area, ignition off, keys removed. (2) Disconnect VS02 PRO main 24V supply at battery box circuit breaker. (3) Wait 5 minutes for capacitor discharge — verify with multimeter that pack terminal voltage <2V before any tool contact. (4) Engage BMS service disconnect (red lever on pack housing) — this isolates internal cells from external terminals via integrated contactor. (5) Verify pack terminal voltage = 0V with multimeter before proceeding. (6) Don Class 0 electrical PPE (insulating gloves + face shield) for actual pack manipulation.

Mechanical pack removal

VS02 PRO 200 Ah LFP pack is mounted in roof unit chassis via 8× M8 stainless steel bolts with thread-locking adhesive. Use M8 hex socket on torque wrench set to 12 Nm break-away torque. Remove bolts in star pattern. Pack weighs 28 kg — requires two-person lift or hoist support due to roof-level access. Disconnect BMS communication cable (Deutsch DT06-12S connector) and HV cables (Anderson SB175 connectors, 50 mm² gauge). Lower pack to ground station for inspection or shipping crate for warranty return.

Replacement pack commissioning

New 200Ah LFP pack ships with state-of-charge ~30% (transport regulation per UN 3480). Before installation: (1) Inspect pack housing for transport damage. (2) Verify cell voltage uniformity via BMS service port (USB-C, runs Vethy LithCheck utility) — all 8 cells should read within ±0.02V of each other (factory commissioning spec). (3) Install pack into VS02 PRO chassis, torque M8 bolts to 22 Nm in star pattern using thread-locker (Loctite 243 blue). (4) Reconnect BMS communication cable and HV cables — verify proper Deutsch connector latch engagement. (5) Disengage BMS service disconnect lever. (6) Reconnect 24V supply at battery box circuit breaker. (7) Power up VS02 PRO via dashboard control — boot sequence takes 90 seconds for new pack cell calibration.

V-FMSG-24 telematics re-pairing and warranty logistics

After pack swap, V-FMSG-24 module must re-pair with new pack BMS for telemetry continuity. Use Vethy Service App (iOS/Android) → Pack Replacement → enter old pack serial (printed on housing) + new pack serial → triggers OTA re-pairing handshake. New pack BMS data appears in fleet telematics dashboard within 5 minutes. For warranty exchange: package old pack in original shipping crate (or Vethy-provided return crate), include service report with mileage + failure mode, ship via Vethy authorized lithium freight carrier (DOT 49 CFR 173.185 compliant for lithium battery shipment). Vethy warranty desk processes refund credit within 14 days of receipt confirmation.

Frequently asked questions

How long does typical VS02 PRO lithium pack swap take?

Trained technician: 45-90 minutes total elapsed time including safety procedures, mechanical removal, commissioning and telematics re-pairing. Allow additional 30 minutes for first-time technicians.

Can fleet operators perform pack swap in-house?

Yes — Vethy provides 2-day technician training course covering VS02 PRO service procedures including lithium pack swap. Training certifies fleet technicians for warranty-eligible field service. Vethy supplies torque wrenches, BMS service tools and Class 0 PPE kits as part of fleet service package.

What is the typical pack failure mode that triggers replacement?

Most common: gradual capacity degradation (BMS reports usable capacity <70% of nameplate after 7-10 years). Less common: individual cell voltage divergence (BMS auto-balances but flagged for replacement if divergence >0.15V persistent). Rare: thermal event (BMS triggers permanent lockout requiring pack replacement). Vethy fleet data 2024: 96% of pack replacements are capacity degradation (planned), 3% cell divergence, 1% thermal lockout.

Is old pack hazardous waste requiring special disposal?

Yes — LFP lithium packs are regulated under DOT 49 CFR 173.185 (transport) and EPA 40 CFR 273 (universal waste disposal). Vethy warranty return logistics handles compliant transport and end-of-life recycling through partnership with Redwood Materials (North America) and Northvolt Revolt (Europe). Do not dispose locally — return to Vethy.