
Industrial Grade 72V 400Ah Lithium Ion Battery Pack for AGV, Forklift & Heavy-Duty UTV
Bonnen 72V 400Ah LiFePO4 battery is the “gold standard” for heavy-duty electric vehicles (EVs) and Automated Guided Vehicles (AGVs). Unlike standard consumer batteries, this pack is built for 24/7 industrial cycles. It features a ruggedized outer shell and an intelligent Battery Management System (BMS) that monitors every cell in real-time. Whether you are building a fleet of autonomous warehouse robots or a heavy-payload utility vehicle, this 72V system provides the high-discharge current and rapid-charging capabilities needed to keep your project moving without downtime.
For EV project engineers, this matters because industrial vehicles do not just need “a battery.” They need a pack that can handle real duty cycles, repeated charging, vibration, load spikes, and field conditions. As part of our custom lithium battery work for EV systems, it has more than 10 years of experience, uses grade A cells, and supports custom design from engineering through delivery.
Free Custom Design
24/7 Engineer Support Services
Certification: Compliance with MSDS, UN38.3, CE, CB, IEC 62619, UL
Product Features

| No. | Item Name | Basic Parameter |
| 1 | Voltage | 73.6V |
| 2 | Battery system whole energy(KWh) | Rated:29.44kWh |
| 3 | Battery system whole capacity(Ah) | Rated:400Ah |
| 4 | Battery system working temperature | Discharge -20~45℃,charge 0~45℃ |
| 5 | Battery surrounding environment relative humidity | 10%~85% |
| 6 | Battery storage temperature | -20~45℃ |
| 7 | Battery standard charging current(23±2℃) | 100A |
| 8 | Battery Max charging current(23±2℃) | 200A |
| 9 | Battery standard discharging current(23±2℃) | 400A |
| 10 | Battery continuous discharging current(23±2℃) | 400A |
| 11 | Battery discharge peak current(5s)(23±2℃) | 600A |
| 12 | Battery system insulation resistance testing value | ≥20mΩ |
| 13 | Insulation Resistance Testing | ≥20MΩ |
| 14 | Waterproof grade of battery case | IP67 |
| 15 | Battery system waterproof grade | IP67 |
| 16 | Cooling system | Air cool |
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Easier project sizing
A 29.44kWh pack gives engineers a clear energy target for runtime planning. That makes it easier to match duty cycle, load demand, and charging schedule during early project work.
Better control over current demand
With 400A continuous discharge and 600A peak output, engineers can better support motor start-up, lifting load spikes, and short burst operation without guessing.
Less downtime in fleet use
Fast charging support at up to 200A max charge current helps reduce idle time. For fleet or shift-based operations, that can make a real difference in asset use rate.
Stronger environmental tolerance
The IP67 pack design gives engineers more confidence for dusty, humid, or splash-prone sites. That matters in warehouses, factories, and outdoor utility jobs.
Safer integration path
Lists protections for overcharge, over-discharge, and short circuit, and it also states compliance with major transport and safety-related standards. That helps project teams move more smoothly through approval and testing.
Lower maintenance burden
LiFePO4 packs usually need less routine care than lead-acid systems, and Bonnen emphasizes long cycle life and stable performance. For engineers, that often means fewer service headaches after launch.
Easier OEM/ODM matching
It customizes batteries for specific EV models and project requirements. That is useful when your chassis, controller, connector layout, or enclosure space is fixed.
Better vendor support
24/7 engineer support services, and our team has over 10 years of experience in lithium battery systems. For project engineers, that kind of support can save time during sample testing, design changes, and rollout.
This battery isn’t just for one machine—it’s a versatile power plant for several industries:
Automated Guided Vehicles (AGVs): High-load carriers used in automotive manufacturing and logistics.
Electric Forklifts: Class I, II, and III forklifts that need consistent power for heavy lifting.
Heavy-Duty UTVs: Utility Task Vehicles for mining, agriculture, or large-scale facility maintenance.
Ground Support Equipment (GSE): Electric tractors and luggage carriers at airports.
Marine Propulsion: Electric boats or ferries requiring high-voltage, high-capacity storage.
1. How does the 72V 400Ah battery compare to lead-acid in terms of ROI?
Compared to lead-acid, the ROI on a Bonnen lithium battery is typically achieved within 18 to 24 months. While the upfront cost is higher, you save money through zero maintenance, 3x longer life, and lower electricity bills due to higher charging efficiency.
2. Can I customize the dimensions to fit a narrow AGV chassis?
Yes. Customization is our specialty. We can modify the length, width, and height of the 72V 400Ah pack to ensure it fits perfectly into your existing battery compartment.
3. Does the BMS support CANopen or J1939 protocols?
Absolutely. We can program the BMS to support CANopen, J1939, or custom CAN protocols to ensure seamless communication with your motor controller and display.
4. What is the maximum continuous discharge current for the 72V 400Ah model?
Our standard heavy-duty model supports 200A continuous discharge, but for high-torque applications like forklifts, we can customize it to handle 400A or higher peaks.
5. How do I calculate the runtime for my 72V heavy-duty UTV?
To find the runtime, use this formula: (Battery Capacity 400Ah × 0.9 DoD) / Average Motor Current Draw. For example, if your UTV draws an average of 50A, you’ll get roughly 7.2 hours of continuous run time.
6. Is it safe to use these batteries in cold storage at -20°C?
Yes, but we recommend adding our internal heating film option. This allows the BMS to warm the cells using the charger’s power before it starts charging, protecting the battery’s health.
7. Can I connect two 72V 400Ah batteries in parallel? Y
es, you can parallel them to get a 72V 800Ah system. Our BMS is designed to balance the load between multiple packs automatically.
8. What kind of cells do you use?
We use Grade A LiFePO4 prismatic cells from top-tier manufacturers. Every cell is tested for capacity and internal resistance before assembly.
9. Do you provide the charger with the battery?
Yes, we provide matched industrial chargers (100A+ output) that communicate with the BMS to ensure the fastest and safest charging profile.
10. How long does it take to get a custom 72V lithium battery prototype?
Usually, it takes about 30 to 45 days from the time we finalize the technical drawings to shipping the prototype.
11. What certifications do your batteries have?
Our packs and cells typically carry UN38.3, CE, and IEC62619 certifications, making them ready for international export and industrial use.
12. Can this 72V battery handle high-vibration environments?
Yes. For heavy-duty UTVs and mining equipment, we use reinforced internal structures and shock-absorbing materials to ensure the cells stay secure.
13. What is the “depth of discharge” (DoD) I should use?
For maximum life, we recommend an 80% to 90% DoD. Unlike lead-acid, which shouldn’t go below 50%, you can use almost all the capacity in our lithium packs.
14. Do you offer remote monitoring?
We can integrate a 4G or Bluetooth module into the BMS, allowing you to monitor battery health, location, and SOC (State of Charge) via a mobile app or web portal.
15. How do I start a custom battery project with Bonnen?
It’s a simple three-step process: 1. Share your voltage/capacity and space requirements. 2. Our engineers provide a technical proposal and CAD drawing. 3. Once approved, we move to production.
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Tags: Heavy Equipment Battery



















































