Each lithium-ion cell has three individual heaters to combat extreme cold environments and maintain an optimal temperature. controlling the lithium-ion cell temperature extends your lithium asset's lifespan and preserves performance.

Specially developed by industry-certified engineers, Donfang anti-freeze LiFePO4 batteries are purpose-built for cold storage and sub-zero logistics operations. Rigorously tested to maintain stable power output and high efficiency in extreme temperatures from -40°C to -20°C, these batteries effectively prevent capacity loss and performance degradation — a challenge that conventional lead-acid batteries cannot overcome in freezing conditions.

Each battery is engineered with advanced thermal management and intelligent BMS technology, ensuring consistent performance in refrigerated warehouses, outdoor winter operations, and other low-temperature environments. Donfang also offers highly customizable configurations, allowing precise adaptation to diverse forklift models and specialized cold-chain application requirements.

Explosion-proof LiFePO4 batteries are engineered by industry-certified experts to deliver maximum safety, reliability, and long-term performance in hazardous industrial environments. Each battery is designed and manufactured in compliance with strict ATEX and IECEx explosion-proof standards, ensuring safe operation in areas with flammable gases, vapors, or combustible dust.

Backed by rigorous third-party testing and years of proven field performance in chemical plants, mining sites, and manufacturing facilities, Explosion-proof lithium batteries feature a long cycle life, rapid charging capability, advanced intelligent BMS, and maintenance-free operation. This combination makes them a trusted power source for material-handling equipment in high-risk zones worldwide.

Engineered for optimal thermal management, Donfang batteries utilize Active cooling technology with built-in fans to keep the LiFePO4 cells within an optimal temperature range. The air-cooled lithium batteries operate with approximately 5°C lower heat generation than conventional lithium counterparts.

With heavy-duty operations and outdoor applications, a proper cooling solution is vital to the lifespan of lithium batteries.This enhanced cooling performance helps maintain thermal stability, boost energy efficiency, and significantly extend overall battery lifespan, even under intensive material-handling workloads.

Donfang batteries built with Grade A LiFePO4 cells for maximum reliability, each unit integrates an intelligent BMS, a smart 4G module for real-time remote monitoring, and a built-in fire suppression system. These features work together to deliver superior safety, consistent performance, and dependable power — making Donfang ’s air-cooled lithium battery an ideal solution for mission-critical industrial applications.

Active balancing technology measures and controls the cell voltage within the battery during charging with the help of unique equalizer through a high balancing power(3-5A) current. This feature prolongs battery life and maintains its performance for years after using the battery.

The lithium battery modules are retained by nickel plated busbars to ensure long-term performance. They are designed to withstand freezing temperatures through the use of premium components and controlled by onboard computers that keep your  device operating even in cold storage applications.

Standard modules can be easily combined into battery systems for low-speed vehicles, golf carts, energy storage cabinets, forklifts, special vehicles, etc., and are widely used. At the same time, the standardization of spare parts can also meet any combination of different numbers of strings and meet the specific usage scenarios of customers.

A USB-OTA device transmits data wirelessly to a remote device, allowing updates, configurations, or programming changes to be sent and applied without access to the device.

There are a wide variety of chemistries to choose from when looking at advanced lithium batteries. We chose lithium iron phosphate (LiFePO4) because it has three advantages that make it the obvious choice for tough jobs.

1. It is thermally stable up to very high temperatures, meaning no thermal runaway. The batteries can be used safely in ambient temperatures up to 55°C (131°F). Operating lead acid batteries at this temperature reduces their cycle life by a whopping 80%.

2. Lithium iron phosphate provides a remarkably long cycle life, with competing chemistries being either too expensive (lithium titanate), or too unstable (lithium nickel cobalt aluminum oxide).

3. Lithium iron phosphate provides more power and more energy density than lead acid and many other lithium chemistries, so it’s perfect for demanding jobs, and efficient energy storage solutions.

Not all lithium batteries are created equal. There are several factors that go into creating a battery that is high-performing, long-lasting, and most importantly, safe.

Active Safety features incorporate a Battery Management System(BMS) for each module that reports to the batteryoperating systems supervisorfor continuous monitoring. Both technologies are developed in-house to increase the focus on safety mechanisms.

One major factor to consider is UL certification, or at a minimum making sure the battery is designed to UL standards.

Donfang batteries were developed to include a printed circuit board sandwich design with ultrasonic wire-bonding technology. This innovative construction prevents failure propagation and thermal runaway events. Providing two different safety solutions and the UL 2580 Listing gives you additional peace of mind.

Active balancing technology measures and controls the cell voltage within the battery during charging with the help of unique equalizer through a high balancing power(3-5A) current. This feature prolongs battery life and maintains its performance for years after using the battery.

All lithium chemistries have higher energy density compared to lead acid batteries. We use lithium-ion technology because of the dramatic increase in energy density over current lead acid battery solutions. We chose lithium iron phosphate (LiFePO4) because it has a specific energy of ~110 watt-hours per kilogram, compared to lead acids ~40 watt-hours per kilogram. What does this mean? Our batteries can be ~1/3 the weight for similar amp-hour ratings.

Our lithium-ion batteries are fast. They can be fast-charged completely and can handle ultra-fast charging up to 1C (a full charge in 1 hour). Lead acid can only be fast-charged up to 80% after which the charging current drops dramatically. In addition, our battery packs maintain excellent performance under discharge rates as high as 3C continuous (full discharge in 1/3 an hour) or 5C pulsed. Lead acid experiences dramatic voltage sag and capacity reduction by comparison. In fact, the discharge profile of a lithium-ion battery shows how voltage and power remain almost constant throughout its discharge, unlike lead acid. This means that even when the battery runs low, performance stays high. There are also no memory issues, discharge and charge the battery at any point without consequence.

The differences in battery technology today allow customers to choose the best fit for their applications. Thus, lithium prismatic cells are the preferred technology for material handling equipment (MHE):

● Hundreds of Ah nominal capacity. The technology provides the best ratio of power and energy per volume unit. This is especially important in the high-capacity, high-current and relatively low voltage batteries used in MHE.

● Optimal utilization of available pack space. There are no space cavities between the cells. This allows maximum capacity for the battery pack, and still have enough room to accommodate for required extra weight, sealing, heater, internal charger or other battery upgrades within the battery compartment’s limited area.

● Contacts are strong enough for reliable bus-bars connection. This is a hugely important safety factor with high vibration operations, especially in cushion-tire type lift trucks.

● Flexible battery weight. LFB pack weight is not a limitation for most of the MHE in terms of its range per one charging (unlike passenger EVs). Like forklifts operate mostly near their charging stations and their batteries are often engineered as a counterweight.

Every battery cell chemistry is affected by the depth of discharge, and the deeper the discharge, the shorter the lifespan. Our lithium-ion can be discharged to 80% while still maintaining long cycle lifetimes (>3500 cycles). Lead acid batteries experience drastic reductions in cycle life. In fact, at an 80% depth of discharge, lead acid batteries only last 1000-1500 cycles, meaning our batteries last 3x longer.

Available at local dealers across the country

The Donfang modular Lithium Battery technology is now available global at Authorized Donfang Lithium-Ion Dealers. Donfang® has one of the largest networks of authorized lithium-ion dealers who are trained to properly upgrade and replace lead-acid batteries with lithium-ion. The new battery will be available globally this year as well.

Ultimate Environmental Protection for Industrial Batteries

✓ IP65-rated waterproof & dustproof enclosure

✓ Complete isolation from moisture, chemicals and extreme temperatures

✓ Reinforced structure prevents internal component corrosion

Ideal for Demanding Environments: Food processing & cold storage facilities; Chemical plants & marine applications; Construction & mining equipment.

Battery Cloud Smart Reporting

The Donfang Battery Management System (BMS) manages the lithium battery modules and continuously delivers updates and diagnostic information to the cloud. Individual modules are remotely monitored and controlled to maintain stable operating conditions.