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- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The SENFLY T40 is a 2000A 24V lithium jump starter built for trucks, buses, boats, and construction machinery with engines up to 12.0L gas or diesel. At roughly one-tenth the weight of traditional lead-acid 24V boosters, its 40000mAh (148Wh) pack fits in a cab storage compartment instead of a workshop shelf. For fleets, it turns a dead-battery service call into a two-minute self-rescue.
What Does One Hour of Truck Downtime Cost Your Fleet?
A stranded truck burns driver wages, delivery penalties, and tow fees — often hundreds of dollars per incident. The T40 puts 2000A of 24V starting power in the cab, so drivers self-rescue in minutes. Fleet managers typically recover the unit cost in a single avoided tow.
Real 24V Engineering, Not a Rebadge
The T40's battery-pack architecture is purpose-built for 24V systems, delivering better stability and thermal management than adapted 12V designs. Patented 10-in-1 smart clamps protect against sparks, reverse polarity, and short circuits — critical when the operator is a driver, not a technician. It starts 12.0L-class engines down to -20°C.
Two Lights for Night Work
Breakdowns don't schedule daylight. The T40 carries a 500-lumen spotlight plus a separate wide-area floodlight, with SOS, strobe, and red warning modes. USB-A and USB-C PD ports keep driver phones and tablets charged on long hauls.
Specifications
| MODEL | T40 |
| STARTING CURRENT | 1000A |
| PEAK CURRENT | 2000A |
| CAPACITY | 40000mAh/148Wh(High-discharge Lithium-ion) |
| LED LIGHT | Lighting/SOS/Strobe/Red warning/ |
| START CABLE CLAMP | Patented Ultra Smart Clamps (spark-proof/Reverse Polarity etc. 10 in 1) |
| OUTPUT#1 | USB-A: 5V/2.1A｜5V/3A|9V/2A｜12V/1.5A |
| OUTPUT#2 | USB-A: 5V/2.1A｜5V/3A|9V/2A｜12V/1.5A |
| OUTPUT#3 | / |
| INPUT | USB-C PD18W (Full charge in 5 hours) |
| AIR COMPRESSOR | / |
| OPERATION TEMPERATURE | -20°C to 60°C (-4°F to 140°F) |
| Housing Material | 94-V0 Fire-Retardant Heavy-Duty Shell |
| DIMENSION | 275*169*137mm 10.8*6.65*5.4inch |
| CUSTOMIZE OPTIONS | 148Wh（40000mAh） |
Applications
● Long-haul trucks — cab-stored self-rescue for 24V rigs up to 12.0L.
● Bus and coach operators — keep schedules when a vehicle won't start at the depot.
● Construction machinery — excavators, loaders, and site equipment in remote locations.
● Marine and workboats — 24V starting plus emergency lighting at the dock.
● Logistics fleet depots — morning cold-start support across the yard.
● Driver device charging — PD fast charge for phones and ELD tablets on the road.
Advantages
1. True 24V platform: 2000A peak / 1000A starting current for 12.0L-class gas and diesel engines.
2. One-tenth the weight of lead-acid 24V boosters — fits cab storage, not workshop shelves.
3. Purpose-built 24V battery architecture with superior stability and thermal management.
4. Dual lighting system: 500-lumen spotlight plus wide-area floodlight, with red warning mode.
5. Patented 10-in-1 smart clamps; two-step start that any driver can perform safely.
6. 148Wh capacity doubles as a serious power bank via USB-A ×2 and USB-C PD.
7. 94-V0 fire-retardant heavy-duty shell survives dust, splashes, drops, and depot life.
FAQ
Q: Is the T40 a true 24V jump starter?
A: Yes. It is engineered for 24V systems found in trucks, buses, and heavy machinery — not a 12V unit with an adapter. Its battery architecture and thermal management are designed specifically for 24V starting loads.
Q: Can the T40 start 12V vehicles as well?
A: The T40 is optimized for 24V vehicles. For mixed fleets, we recommend pairing it with a 12V model such as the T23 (2000A, up to 10.0L) so each system gets the correct voltage and full protection logic.
Q: How does it perform in winter?
A: It operates from -20°C to 60°C. The high-discharge lithium pack maintains strong cranking output in cold conditions — the exact scenario where fleet downtime is most expensive.
Q: Do you offer fleet pricing and customization?
A: Yes. We quote volume pricing for logistics companies and fleet equipment distributors, with logo, color, and packaging customization. The unit carries a 1-year warranty with B2B after-sales programs.
