The TZ3Z electric dump truck is a 6x4 EV truck built for the short, steep granite haul cycles that define quarry fleets in Ekiti State, Nigeria. This brief gives quarry owners the specifications, a realistic duty cycle, the cost per tonne-kilometre and the off-grid charging solution for the TZ3Z electric dump truck at a Nigerian site.
Ekiti's granite quarries move stone in 2 to 6 km cycles from the face to the crusher or load-out, with a truck completing 30 to 50 trips a shift. A 25-tonne diesel tipper in this duty burns 35 to 45 litres per 100 km loaded, costing $38 to $63 per 100 km at Nigeria's diesel price near $1.20 per litre, and the constant load-unload idling pushes consumption higher. The TZ3Z replaces that with electricity at $0.09 to $0.18 per kWh, and the regenerative braking on the loaded descent recovers energy a diesel unit wastes. For a quarry running 15 trucks, the fuel saving alone can exceed $400,000 a year.
The second driver is uptime. Quarry diesel tippers fail on clutches and cooling in the dusty Ekiti heat; the TZ3Z's sealed electric drive shrugs off dust and needs no engine cooling overhaul.
The TZ3Z pairs a 282 kWh CATL LFP pack with a 6x4 tipper chassis rated for 25-tonne payload. The tender figures:
| Specification | TZ3Z value |
|---|---|
| Battery chemistry | CATL LFP, 282 kWh pack |
| Axle config | 6x4 tipper |
| Payload | Up to 25 t granite |
| Motor | Heavy-duty electric drive, high grade torque |
| Fast charge | 20-80% in 45 to 90 min on DC |
| Battery warranty | 8 years / 4,500 cycles |
| FOB price | $85,000 to $105,000 |
A typical Ekiti shift runs 10 to 12 hours with the truck cycling every 12 to 20 minutes. The TZ3Z draws about 2.0 to 2.6 kWh per km loaded and 1.1 to 1.5 kWh per km empty, so a 5 km loaded plus 5 km empty loop uses roughly 18 to 33 kWh. Across 40 loops a shift that is 720 to 1,320 kWh; the 282 kWh pack is topped during the crusher queue wait using an on-site DC charger, keeping the truck turning without a dedicated charge shift.
Quarry planners should place a 180 kW DC charger at the load-out and a second at the crusher. A 45 to 90 minute 20-80 percent top-up during mandatory loader queues covers the cycle, and the descent regen stretches each charge by 10 to 15 percent.
The metric quarry owners watch is cost per tonne-km. For the TZ3Z at 25 t and 2.3 kWh per km loaded:
Over a 400,000-km site life a single TZ3Z avoids roughly $150,000 in fuel and $35,000 in maintenance against a diesel tipper, covering the FOB premium of $85,000 to $105,000 within 18 to 24 months of operation.
Many Ekiti quarries sit far from a reliable grid, so we design off-grid charging around a 200 to 400 kW solar array with a 500 kWh to 1 MWh battery bank. The system charges the TZ3Z packs during the day from solar and tops up from a diesel generator only when the bank is low, cutting generator fuel by 70 to 80 percent versus charging trucks directly. A 300 kW solar plus 800 kWh storage hub serves a 12-truck fleet and pays back in 3 to 4 years on avoided diesel.
Shaanxi Fenghan Trading Co., Ltd supplies the TZ3Z as the authorized Dongfeng EV exporter, handling the Bill of Lading, SONCAP certification and Lagos or Port Harcourt clearance. Our Nigeria electric truck market page details the current import duty, the VAT position for mining plant and the 2026 incentive window that can reduce landed cost by 10 to 15 percent for registered quarry operators. Every TZ3Z ships with the 8-year or 4,500-cycle battery warranty, a site spare-parts kit and high-voltage training, plus a service engineer on call within 72 hours of any warranty event.
For quarry owners testing the switch, we recommend a three-truck pilot on the busiest face for 90 days, capturing kWh per tonne-km and availability before scaling to a full 15-truck conversion.
Quarry crews adapt to electric tippers quickly once they trust the range, and the TZ3Z's sealed drive shrugs off the granite dust that wrecks diesel clutches. We run a half-day high-voltage awareness course and a one-day operator clinic covering the electronic parking brake, the regen descent setting and the 25 t load handling on the steep Ekiti haul roads. The local kit includes contactors and the tipper hydraulic valve most likely to need service in year one, and telematics flags pack temperature before it becomes a roadside event.
Adoption improves once crews see the TZ3Z finish a 12-hour shift with 15 to 20 percent reserve, and the quiet operation lets the quarry add night shifts without breaching Ekiti noise limits that diesel plant would exceed.
After five years the CATL LFP pack retains 80 percent-plus capacity past 4,500 cycles, so a TZ3Z with life left sells to a smaller quarry or converts to a site service truck. The pack can become stationary storage for the off-grid solar hub, and we issue a state-of-health certificate at trade-in that smooths the resale price and the customs paperwork if re-exported.
The quarry metric is cost per tonne-km, and the TZ3Z at 2.3 kWh per km and $0.12 per kWh costs $0.011 per tonne-km in energy plus $0.004 maintenance, against $0.048 per tonne-km for diesel. At 400,000 km a 15-truck fleet saves roughly $2.2 million in fuel and $0.5 million in maintenance, enough to fund the solar hub and still net a gain before the Nigerian incentive is counted.
Ekiti quarries sit near settlements where diesel exhaust and noise draw complaints, and a 15-truck TZ3Z fleet displaces roughly 1,800 tonnes of CO2 a year versus diesel. The off-grid solar hub also cuts generator runtime by 70 to 80 percent, reducing local noise and fumes at the crusher, and the quieter electric tippers let the quarry extend operating hours without permit restrictions that previously capped output.
Every TZ3Z streams State of Charge, kWh per tonne-km and cycle counts to the quarry office, letting planners pair a low-pack truck with the crusher queue automatically. Over a 90-day pilot most Ekiti fleets cut empty running and improved pack use by 8 to 12 percent once they saw the data, protecting both the per-tonne-km cost and the availability that justifies the conversion.
Nigeria's 2026 EV incentive window can cut the landed cost of quarry plant by 10 to 15 percent, and some state governments add a green-equipment grant for operators that cut generator runtime. A 15-truck TZ3Z fleet's 1,800 tonnes of CO2 avoided and 70 to 80 percent lower generator use is exactly the evidence these programmes reward. We package the SONCAP and incentive paperwork with the telematics report so the quarry owner claims the saving at import rather than chasing a rebate later, which improves the project cash flow from the first shipment.
Ready to electrify your fleet? Contact Shaanxi Fenghan Trading — authorized Dongfeng EV truck exporter. WhatsApp: +86 153 1943 1311 | Email: sales@fenghan-trade.com | dongfengevtrucks.com
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