Lithium-ion vs LP forklifts: 5-year ROI math

Lithium-ion forklifts cost more on the invoice and less every month after. The question is where the lines cross. Here’s the 5-year math we run for Chicago fleets, with the assumptions visible.

What lead-acid actually costs per year

A two-shift lead-acid operation pays four bills Li-ion deletes: watering and equalization labor, battery-room ventilation, a spare pack for swaps, and the productivity tax of 8-hour cool-down charging. For a typical 2-shift Chicago operation we audit, that’s about $4,800 per truck per year — before anyone touches a wrench.

The Li-ion side of the ledger

Opportunity charging: 1.5 hours to full, topped up during lunch — the truck never leaves the floor and there’s no second battery. Cycle life runs 3–4× lead-acid, and HELI warranties the pack for 10 years, which outlives most ownership terms entirely.

On HELI trucks the premium is zero — Li-ion is the standard pack. On brands where lithium is a $9,800 option, the $4,800/year delta still pays it back inside 24–30 months on two shifts.

Single-shift? Different answer

One shift, low hours, truck sleeps 16 hours a day: lead-acid’s overnight charge is free time, and the savings shrink toward $1,500/year. Payback stretches past 5 years on a lithium-option brand. This is why we don’t blanket-recommend Li-ion — bring us your shift pattern and meter hours.

Or skip the capex argument entirely

Battery-as-a-Service leases the lithium pack from $140/month — swap, maintenance, and end-of-life included — so the Li-ion decision becomes an operating line instead of a capital fight. The TCO calculator on that page runs your fleet’s numbers in about a minute.

Federal incentives shift year to year — ask your tax advisor about current clean-equipment credits before you close the math.