Forklift batteries come in a range of voltages, capacities, and physical sizes. The correct battery must match your forklift's voltage, amp-hour (Ah) capacity, physical dimensions, and minimum weight (counterweight requirement). Below is a comprehensive reference chart for common forklift battery sizes.
Lead-Acid Forklift Battery Size Chart
Voltage Cells Common Ah Range Typical Dimensions (L × W × H) Weight Range
24V 12 cells 600 – 1000 Ah 38″ × 16″ × 31″ 600 – 1,000+ lbs
36V 18 cells 700 – 800 Ah 38″ × 20″ × 32″ 700 – 800+ lbs
48V 24 cells 660 – 1000 Ah 39″ × 30″ × 23″ 1,500 – 3,400 lbs
80V 40 cells 800 – 1200+ Ah Varies by manufacturer Varies
SKU Decoder Example: A battery labeled 24-85-21 means:
24 cells × 2V per cell = 48V battery
85 Ah per positive plate
21 total plates per cell (10 positive + 11 negative)
Capacity = 10 positives × 85 Ah = 850 Ah
Lithium Forklift Battery Size Chart (Leoch Examples)
Lithium batteries are typically lighter and more compact than lead-acid equivalents.
Model Voltage Capacity (Ah) Dimensions (L × W × H) Weight
FP24-100 25.6V 100 Ah 340 × 330 × 280 mm 24 kg
FP24-105 25.6V 105 Ah 345 × 245 × 240 mm 20 kg
FP24-200 25.6V 200 Ah 495 × 290 × 268 mm 45 kg
FP48-60 51.2V 60 Ah 329 × 567 × 235 mm 37 kg
FP48-105 51.2V 105 Ah 585 × 328 × 234 mm 50 kg
FP72-28 73.6V 28 Ah 534 × 278 × 168 mm 19 kg
FP72-44 73.6V 44 Ah 529 × 278 × 228 mm 25 kg
How to Read a Forklift Battery Size Chart
Specification What It Means
Voltage (V) Must match your forklift's motor and controller specs. Common: 24V, 36V, 48V, 80V.
Ah Capacity Determines runtime. Higher Ah = longer shifts.
Dimensions (L×W×H) Must fit your forklift's battery compartment exactly. Even a 1″ overhang can damage cables.
Weight Serves as counterweight. If the battery is too light, tip-over risk increases.
Terminal Placement Must match your forklift's connection orientation.
Voltage by Forklift Type (Quick Guide)
Voltage Typical Forklift Class Capacity
24V Light-duty pallet jacks, small electric forklifts (1,500–3,000 lbs) 250–400 Ah
36V Medium-duty 3,000–5,000 lb capacity forklifts 600–900 Ah
48V Standard warehouse forklifts (4,000–6,000 lbs) 420–800 Ah
72V / 80V Heavy-duty models (10,000+ lbs) 800–1,200 Ah
Important Safety & Compliance Notes
Do not exceed the battery compartment dimensions — physical fit is non-negotiable.
Do not use a battery lighter than the OEM minimum weight — this affects forklift stability and OSHA compliance under 1910.178.
Do not mismatch voltage — installing the wrong voltage can fry controllers and motors, costing thousands in repairs.
Lithium vs. Lead-Acid — lithium batteries are typically 30% lighter and more compact, but ensure the compartment's locking mechanisms accommodate lighter loads.
Always check your forklift's data plate for the OEM-specified voltage, Ah range, and minimum battery weight before purchasing a replacement.