Against Delhi’s 50℃ summer extremes, monsoon street flooding and the strict AIS-156 Phase 2 regime, TIANQIU delivers automotive-grade engineering that supports 3-day customs clearance and three years of fault-free fleet operation. The pack has been verified against open-flame non-propagation, thermal-runaway audible and visual warning, and dual IP67 air-tightness under heat — and fits Mayuri, Yatri, Saarthi, Terra and Bajaj RE conversion protocols.
verifiedOur own AIS-156 Phase 2 certification code with vehicle type-approval backing · 100% of packs thermally and overcharge tested before dispatch · English test report list with every shipment
Specification notice:Reference values only — batch and duty-cycle variation applies. Contact us for detailed specifications.
Registered and informally operated passenger and cargo E-Rickshaws in India have passed 2.4 million units. More than 85% of them still run heavy, inefficient lead-acid packs that need topping up and replacement every 6–8 months.
Specification notice:The figures above are engineering reference values. They may differ with production batch, configuration and actual duty cycle, and the percentages for life, efficiency, availability and coverage are engineering estimates and bench references. Contact us for the detailed specification sheet.
From the Delhi centralised charging hubs to five and six passengers on a city block, TIANQIU packs have been proven in daily 14-hour operation, monsoon immersion and direct high-temperature sun exposure.
Indian summer temperatures routinely exceed 48–50℃, with road surface radiant heat reaching 65℃. In monsoon season, urban flooding forces vehicles to wade through 20–30cm of water.
The enclosure is 1.5mm thickened, impact-resistant galvanised sheet with a powder coating, closed by a circular weather-resistant silicone gasket and a breather valve. Thirty minutes immersed in 30cm of standing water produced no ingress, with insulation resistance holding above 100MΩ.
IP67 · 30cm / 30 minutesHigh-thermal-stability A-grade prismatic LiFePO4 cells with self-heating onset at 210℃ hold a stable discharge plateau through 65℃ radiant road heat and continuous loaded climbs — thermal runaway is engineered out at cell level.
Self-heating onset 210℃A multi-point NTC matrix lets the BMS apply smooth dynamic derating at 55℃ instead of a hard cut-out. Our patented stepped thermal charge protocol drops current smoothly from 30A to 15A once cell surface temperature reaches 52℃, then restores full fast charging as the day cools.
Stepped down-current at 52℃ · derating at 55℃| Brand / model | Battery bay (L×W×H mm) | TIANQIU part number | Voltage / capacity | Typical duty-cycle range | Mounting method |
|---|---|---|---|---|---|
| Mayuri Deluxe / Pro | 520 × 310 × 260 | VT-48105-MY | 51.2V / 105Ah (5.37kWh) | 110–125 km (4 passengers) | Original U-bolt clamp in chassis |
| Yatri Super E-Rickshaw | 505 × 325 × 275 | VT-48100-YT | 51.2V / 100Ah (5.12kWh) | 105–115 km (5 passengers) | Side pressure plate + anti-vibration pad |
| Saarthi Shaktiman / Star | 540 × 300 × 255 | VT-48105-SR | 51.2V / 105Ah (5.37kWh) | 115–130 km | Front bracket slot and clip |
| Terra Motors Y4A / Cargo | 550 × 350 × 280 | VT-60120-TM | 60.8V / 120Ah (7.29kWh) | 130–145 km (heavy cargo) | Reinforced baseplate assembly |
| Bajaj RE (4S conversion spec) | 610 × 380 × 290 | VT-72150-BJ | 72.0V / 150Ah (10.8kWh) | 160–185 km (with climb boost) | Custom engine-bay conversion bracket |
Passenger chassis map to the passenger three-wheeler pack platform, and cargo chassis such as the Terra Motors Cargo to the heavy-duty cargo tricycle pack. ARAI / ICAT submission parameters and BMS logic diagrams are available for every part number.
Specification notice:The figures above are engineering reference values. They may differ with production batch, configuration and actual duty cycle, and the percentages for life, efficiency, availability and coverage are engineering estimates and bench references. Contact us for the detailed specification sheet.
Modelled on billing data from a Delhi passenger operator running 120km per day (currency: Indian rupee, INR ₹).
| Cost dimension | Lead-acid (4 × 12V 130Ah) | TIANQIU LiFePO4 (VT-48105) |
|---|---|---|
| Initial purchase | ₹78,000 | ₹112,000 |
| Cycle life and service life | Cheap up front, but 50% capacity fade in 7–8 months and a full replacement is mandatory | 3,500 cycles committed (5 years+) |
| Charge time and daily trips | 10 hours to charge, capping daily trips | 2.5–3 hours, with a midday top-up for an extra run |
| Three-year total spend | ₹245,000+ (four replacements plus power and maintenance) | ₹148,000 (initial purchase plus electricity) |
| Payback and return | Thin monthly surplus | 9.2-month payback, ₹160,000+ cumulative gain per vehicle over 5 years |
Electricity savings of 35%, 40km of added daily range and the removal of acid top-up downtime push net profit up from month ten. Drivers gain ₹6,200+ net per month.
Specification notice:The figures above are engineering reference values. They may differ with production batch, configuration and actual duty cycle, and the percentages for life, efficiency, availability and coverage are engineering estimates and bench references. Contact us for the detailed specification sheet.
ARAI / ICAT implemented the strictest test regime in 2023. TIANQIU holds its own certification code and vehicle type-approval backing, and can supply the complete ARAI, ICAT and BIS submission parameter set, BMS logic diagrams and the English test report list.
Once a single cell enters thermal runaway, the BMS must signal the dashboard with a high-frequency audible and visual alarm within 5 seconds, and the pack must show no external flame propagation for 5 minutes.
Encrypted CAN communication and firmware validation prevent owners or outside workshops from altering protection thresholds or flashing around the protection voltage.
Automotive-grade aerogel barriers and flame-retardant frames sit between cells, surviving 100 hours of three-axis violent vibration on Indian roads. Busbars are laser-welded copper-aluminium composite with tensile shear strength above 400N.
If the software MOSFET protection fails, a dedicated high-voltage fast-blow fuse and an automotive contactor force the circuit open within 0.02 seconds, removing the fire risk.
Combined with AIS-156 Phase 2 certification and UN38.3 packing credentials, our Yantian and Ningbo dangerous-goods (DG Class 9) capability keeps clearance moving with no delay.
Direct access to the western industrial and commercial hub, with smooth clearance and fast inland trailer transfer to Maharashtra, Gujarat and the ICD Tuglakabad inland port serving Delhi.
Transit 14–16 daysIndia’s southern gateway, next to the Bengaluru and Tamil Nadu EV manufacturing cluster. Free container detention can be negotiated out to 14–21 days after arrival.
Transit 12–14 daysA large private port with very high clearance efficiency, and the best sea-rail option for Uttar Pradesh and Bihar — the largest E-Rickshaw installed base in the country.
Transit 15–18 daysCustoms commodity code HS 85076000 (lithium-ion batteries); a complete UN38.3, packing certificate and MSDS set; 180 packs per 20GP and 320 packs per 40HQ; and a local Indian CHA agent releasing in 3 days.
HS 85076000 · 180 / 20GP · 320 / 40HQProduction-line, laboratory and field photographs for this subject. Original records and third-party reports can be released for your project on request.
We are building regional distribution and installation alliances for Uttar Pradesh, the NCR, Bihar and West Bengal. A senior India desk lead typically returns a full CIF landed-cost model within 24 hours on working days.
Specification notice:The figures above are engineering reference values. They may differ with production batch, configuration and actual duty cycle, and the percentages for life, efficiency, availability and coverage are engineering estimates and bench references. Contact us for the detailed specification sheet.
The chassis dimensions, integration protocol and purchase volumes you submit remain strictly confidential. A mutual NDA can be signed first.
