The Polinovel FL51440 is a 51.2 V, 440Ah LiFePO4 traction battery that stores 22,528 Wh in an 810 × 484 × 425 mm steel case weighing 220 kg. Compare the figures below with your truck's battery compartment and data plate before you order.
| Electrical Specifications | Mechanical Specifications | ||
| Model | FL51440 | Dimensions (L × W × H) | 810 × 484 × 425 mm |
| Nominal Voltage | 51.2 V | Weight | 220 kg |
| Nominal Capacity | 440Ah | Case Material | SPCC |
| Energy | 22,528 Wh | IP Rating | IP54 / IP65 / IP67 |
| Self Discharge | <3% per month | Cell Type | LiFePO4 |
| Cycle Life | >4,000 cycles | ||
| Charge & Discharge Specifications | Temperature & Other Specifications | ||
| Charge Current | 200 A | Charge Temperature | 0°C to 55°C / 32°F to 131°F |
| Charge Cut-off Voltage | 58.4 V | Discharge Temperature | -20°C to 60°C / -4°F to 140°F |
| Charge Terminal / Connector | REMA | Storage Temperature | 10°C to 45°C / 50°F to 113°F |
| Discharge Current | 200 A | Display | LED display |
| Discharge Cut-off Voltage | 44 V | Communication | RS485 / CAN |
| Discharge Terminal / Connector | Anderson | Shipping Classification | UN3480, Class 9 |
Four checks before you order a replacement forklift battery
Space
The pack measures 810 × 484 × 425 mm, so the compartment has to offer at least that much room.
Weight
It weighs 220 kg. Give us the minimum battery weight on your truck's data plate and we confirm the counterweight is kept.
Connectors
Charging runs through a REMA connector and discharge through an Anderson connector.
Communication
CAN and RS485 are both on board for the truck controller and the charger.
Not sure this forklift lithium battery fits your truck? Send the brand and model and Polinovel's technical team will check it free of charge.
A 22.5 kWh LiFePO4 Forklift Battery Built for Multi-Shift Fleets
This LiFePO4 forklift battery is built for trucks that cannot afford to stand still. With 440Ah at 51.2 V it carries 22.5 kWh, and a 200 A charge rate takes it back to 80% in 1–2 hours where lead-acid needs 8–10. Operators top it up over breaks, so one lithium pack stays in the truck around the clock and the spare battery, the changing station and the battery room drop off your cost sheet.
CAN communication connects the BMS to the truck's control system and the charger, which puts charge state and faults in front of your team in real time. For fleet managers replacing lead-acid forklift batteries across a 48V fleet, the result is the same lifting power on the last pallet of the shift as on the first, with nothing to water or equalize.
Dealers and fleet operators who buy forklift lithium batteries wholesale pick the 440Ah size because it holds enough energy to keep a 48V truck working across shifts and recharges quickly enough that a spare battery stops being part of the plan.
3–5 times the lifespan of lead-acid, so fewer replacements
Fast and opportunity charging for more uptime
Zero maintenance, with no watering and no equalization
Safe operation across a wide temperature range
Built-in BMS for real-time protection and monitoring
One battery per truck for the whole shift pattern
A 440Ah pack at 51.2 V holds 22,528 Wh and delivers it at consistent power through the entire discharge cycle, so the truck lifts and travels at the end of a shift the way it did at the start. That lets you run one battery per truck and take spare batteries, changing stations and swap labour out of the budget.
Breaks turn into runtime at 200 A
The pack charges at up to 200 A and reaches 80% in 1–2 hours, compared with 8–10 hours for lead-acid. It does not need a full cycle, so a 15–30 minute stop at the charger puts back up to 50–100 Ah. On a two- or three-shift site the trucks stay on the floor, and charging fits around the work instead of the other way round.
CAN communication keeps the fleet visible
CAN links the BMS to the forklift controller and the charger, while RS485 and an LED display give a local read-out. Voltage, current and temperature are tracked in real time, so your maintenance team sees a problem developing before it stops a truck.
Sized to the chassis with the counterweight intact
A lithium pack is lighter than the lead-acid battery it replaces, and a forklift relies on battery weight for stability. This one is designed to fit the chassis and keep the counterweight the truck needs, so stability is not compromised by the switch.
Lithium vs lead-acid forklift battery cost over seven years
A lithium-ion forklift battery costs more per kWh on the day you buy it and less over the years you run it. A lead-acid fleet goes through three or four batteries in seven years, while a lithium fleet buys one.
| Cost Factor | Lithium-ion Battery | Equivalent Lead-Acid Battery | Lithium Advantage |
| Initial Purchase Cost | $130–150/kWh | $100/kWh | Higher |
| Expected Lifespan | 5–10 years | 1–2 years | 3–5× longer |
| Replacement Frequency (7 years) | 1 battery | 3–4 batteries | 3–4× fewer |
| Annual Maintenance Cost | $0 | $100 | 100% savings |
| Energy Efficiency | 95–98% | 70–80% | 15–25% better |
| Downtime Costs | Minimal | Significant | Reduced |
| Total Cost of Ownership | $130–150/kWh | >$500/kWh | About 30–50% lower |
Actual savings vary with usage patterns and energy costs.
Maintenance work that disappears with lithium
Watering, equalization charges and specific gravity checks are weekly or monthly jobs on lead-acid. None of them exist here, and neither does the ventilated battery room.
| Maintenance Task | Lithium-ion | Lead-Acid |
| Watering Requirements | None | Weekly |
| Terminal Cleaning | Not needed | Weekly |
| Equalization Charges | Not needed | Monthly |
| Specific Gravity Checks | Not needed | Weekly |
| Annual Maintenance Cost | $0 | $100 |
Buying for a fleet or for resale? Polinovel supplies this 48V lithium forklift battery in wholesale volumes, priced on your quantity and configuration.
LiFePO4 Cells, Steel Casing and Smart BMS Inside This Industrial Forklift Lithium Battery
Three things decide how a traction battery holds up after years of vibration, dust and fast charging: the cells, the case and the battery management system. Here is what each one does for you.
A smart BMS that watches every charge and discharge
The battery management system monitors voltage, current and temperature continuously and steps in before a fault can damage the pack. Your operators do not have to think about it, which is the point.
Real-time cell voltage monitoring
Cell balancing
Temperature monitoring
Fault detection across the pack
LiFePO4 cells
LiFePO4 cells turn 95–98% of the energy you put in into work, against 70–80% for lead-acid, and lose less than 3% of their charge per month when idle. They contain no toxic heavy metals, which counts in your environmental reporting.
SPCC steel case rated IP54 to IP67
The cells sit in an impact-resistant SPCC steel housing that is fully welded or sealed, with insulated terminals and a flame-retardant casing. Enclosure protection comes as IP54, IP65 or IP67, so a dry indoor warehouse and a wet outdoor yard each get the sealing they need.
Electrical protection
Overcharge protection
Over-discharge protection
Over-current protection
Short circuit protection
Reverse polarity protection
Thermal protection
Cell-level temperature monitoring
Over-temperature protection
Thermal runaway prevention
Pressure relief valves
Flame-retardant casing
Mechanical safety
Rugged, impact-resistant housing
Fully welded or sealed design
Dust and water resistance up to IP67
Vibration-resistant construction
Insulated terminals
This electric forklift battery earns its place where trucks run long hours and charging time is short. These four environments show where it fits.
Warehousing and distribution centers
Picking and loading across two or three shifts leaves no slot for an 8-hour charge. Opportunity charging at 200 A during breaks keeps each truck on its own battery all day, and the changing station can go back to being storage space.
Manufacturing facilities
Line-side trucks have to follow the production schedule. The pack holds stable output through temperature changes and heavy daily use, so material keeps reaching the line and the plant does not plan around charging.
Cold storage and refrigerated warehouses
The pack discharges reliably down to -20°C. For freezer rooms and deep-cold work, a self-heating function keeps charging and discharging stable at temperatures as low as -40°C. Ask for it in your quote if trucks charge below 0°C, and see our guide to lithium forklift batteries for cold storage.
Ports and container terminals
Sea air, long operating hours and heavy lifting cycles are hard on batteries. A sealed housing up to IP67, vibration-resistant construction and a 200 A discharge rating keep the pack working through all three.
Electric forklift brands this battery pack fits
It is compatible with most electric forklift brands on the market, including:
Toyota
Crown
Jungheinrich
Hyster
Yale
Komatsu
Mitsubishi
Linde
Running a different make or an older model? Send the brand and model and Polinovel's technical team will check compartment fit, counterweight and connectors for you.
When the standard FL51440 does not suit your truck or your site, Polinovel designs a custom forklift battery pack around the requirement. That covers the odd truck in a dealer's customer fleet as well as a pack matched to a truck builder's own chassis.
What to send for an OEM quote
The make and model of the truck
Voltage, Ah, size and chemistry of the battery it uses now
Application and lowest operating temperature
Order quantity and target delivery date
Low-temperature operation
Integrated self-heating for cold stores and outdoor winter use, down to -40°C.
Outdoor use
An enclosure rating chosen from IP54, IP65 and IP67.
Unique sizes
Case dimensions and weight matched to the battery compartment and the counterweight the truck needs.
Communication protocols
CAN or RS485 set up for the forklift controller and charger you already run.
For importers and distributors, the paperwork matters as much as the pack. The FL51440 is tested to international safety standards and holds the certificates that customs brokers, site safety officers and insurers ask to see. Request copies with your quotation.
| Standard | What it means for your order |
| UN38.3 | Passed transport safety testing, so it can ship by land, sea and air |
| UL 2580 | Tested and certified to the UL safety standard for electric vehicle battery systems |
| CE | Conforms with EU rules on electrical safety and environmental protection |
| RoHS | Complies with restricted-substance limits |
| ISO 9001 | Production runs under a certified quality management system |
| ISO 14001 | Production runs under a certified environmental management system |
Qualification certificates behind every Polinovel electric forklift battery.
How Bulk Orders of Lithium Forklift Batteries Ship as Class 9 Cargo
Lithium traction batteries travel as UN3480, Class 9 dangerous goods. This pack has passed UN38.3 transport testing, which clears it for shipment by land, sea and air.
Figures for your freight forwarder
Unit size: 810 × 484 × 425 mm
Unit weight: 220 kg
Shipping classification: UN3480, Class 9
Bulk forklift battery orders are quoted with the packing specification, pallet configuration and Incoterms confirmed for your quantity and destination.
Storage guidelines for dealers holding stock
Store at 30–60% charge in a cool, dry, well-ventilated place between 10°C and 45°C
Check the voltage or charge level every 3 months
Recharge any pack that drops below 30%
Self-discharge is under 3% per month, so stock held for resale needs a quarterly look and nothing more.
MOQ and lead time for a 48V 440Ah lithium pack depend on the configuration you order, so Polinovel confirms both in writing on your quotation instead of publishing a single figure. A standard FL51440 needs less engineering than a pack with a custom case size, self-heating or a specific communication protocol.
Send your inquiry
Your truck, the battery it runs today, the quantity and the destination.
01
Free compatibility check
The technical team confirms fit, counterweight and connectors.
02
Written quotation
Price, MOQ, production lead time and shipping terms for your configuration.
03
Shipment and support
The order ships as Class 9 cargo and is covered by the 5-year or 10,000-hour warranty.
04
Need a different capacity? See the 48V 314Ah and 48V 330Ah models, or browse the full electric forklift battery range.
Product Photos of the Polinovel 48V 440Ah Forklift Battery
Need a closer look at the connectors or the rating label before you order? Ask for detailed photos of this 48V lithium forklift battery with your quote request.
Why Source from Polinovel, a Factory-Direct Forklift Lithium Battery Manufacturer in China
Polinovel is a dedicated electric forklift lithium battery manufacturer and OEM supplier based in Longgang District, Shenzhen, China. You work with the factory's own technical team from the first compatibility check through to after-sales support.
5-year or 10,000-hour warranty
Each pack is covered for 5 years or 10,000 operating hours, and technical support continues for the whole life of the battery.
Fit confirmed before you buy
Send the truck brand and model. The technical team confirms the pack fits before you place the order.
Certified product, certified factory
UL 2580, CE, RoHS and UN38.3 on the battery. ISO 9001 and ISO 14001 on the production site.
One supplier for the whole fleet
The material handling battery range also covers reach trucks, narrow aisle and heavy-duty forklifts, pallet jacks, tow tractors and walkie stackers, so a dealer can source every lithium forklift battery in a customer fleet from one factory.
Get a Factory Quote from Polinovel for Your Forklift Lithium Battery Order
Tell us about the truck, the battery it runs today and how many units you need. Polinovel supplies 48V forklift lithium batteries direct to dealers, fleet operators and truck builders, and the technical team replies with a compatibility result and a written quotation covering price, MOQ, lead time and shipping terms.
Forklift brand and model
Current battery voltage, Ah, size and chemistry
Application, shift pattern and operating temperature
Quantity and destination
Building 3, Vanke Timemark, 85 Longcheng Ave, Longgang Dist, Shenzhen, China
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