
373B Heavy Duty Jump Starter
Qingdao Donjelion International Trade Co., Ltd. is one of the most credible manufacturers and suppliers of 373b heavy duty jump starter in China. If you're going to buy customized 373b heavy duty jump starter, welcome to get more information from our factory. Good service and quality products are available.
Product Overview
- 373B Heavy Duty Jump Starter is a professional grade portable jump starter built for diesel and gasoline engines used in trucks, buses, RVs, and heavy equipment. It integrates high rate lithium battery cells, intelligent protection system, and fast charging technology. The unit is optimized for low temperature environments from minus 40°C to 60°C, making it suitable for global logistics and cold region operations.

Key Advantages
1. Extreme Starting Power
With 7000A peak current output, the unit provides instant ignition for heavy duty engines. It supports 12V and 24V systems, reducing downtime and eliminating dependence on roadside assistance.
2. Ultra High Capacity Battery
Equipped with 136500mAh capacity and 499.59Wh energy storage, it supports multiple jump starts per full charge and long standby readiness. One full charge can support more than 100 ignition cycles under standard conditions.
3. Built for Extreme Climate
Industrial grade battery cells allow stable performance in temperatures from minus 40°C to 60°C. This ensures reliable operation in snow, desert, and high heat environments.
4. Long Service Life and Safety
Cycle life exceeds 2000 charging cycles. Built in smart protection system includes short circuit protection, over current protection, over temperature protection, reverse polarity protection, over charge protection, over voltage protection, reverse charge protection, over discharge protection, low power protection, and intelligent software protection.
Product Applications
This jump starter is widely used in:
- Heavy duty trucks and trailers
- Construction machinery
- Agricultural equipment
- Marine engines
- Emergency rescue vehicles
- Fleet maintenance operations
- Cold region transportation systems
Technical Support
-
- Model: JS 373B
- Battery capacity: 136500mAh 499.59Wh
- Peak current: 7000A
- Output: 12V and 24V jump start plus USB charging
- Input: DC 29V 5A fast charging and USB C input
- Charging time: approximately 4 hours
- Operating temperature: minus 40°C to 60°C
- Weight: 5kg
- Size: 290mm x 230mm x 185.5mm

Accessories include AC adapter and USB cable for flexible charging options in workshop or field environments.
After Sales Service
Donjelion provides professional export support including one year warranty for the full unit and technical assistance for battery performance, troubleshooting, and replacement parts supply. Global customers receive fast response service for fleet and industrial applications.
Why Choose Donjelion
Donjelion focuses on industrial grade energy solutions for transportation and field operations. This jump starter is designed based on real fleet requirements, not laboratory conditions. High safety standards, verified cold start performance, and durable battery architecture make it a dependable tool for professional users who cannot afford downtime.
FAQ
Q1: Can it start diesel trucks in winter conditions?
Yes it supports diesel engines and performs stable starting at minus 40°C.
Q2: How many times can it start on one charge?
It can provide more than 100 starts under normal engine conditions.
Q3: Is it suitable for both 12V and 24V vehicles?
Yes it automatically supports both voltage systems.
Q4: How long is the charging time?
Approximately 4 hours using fast charging input.
Q5: Is it safe for daily professional use?
Yes it includes 10 layers of intelligent protection for safe operation.
Upgrade your fleet reliability with Donjelion JS 373B heavy duty jump starter. Contact us today for wholesale pricing, OEM support, and global distribution cooperation.
📞:8613685337922
📫:sales@qd-djl.com
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