Forklift Battery Buying Guide: Voltage, Ah, Lithium vs Lead-Acid

Choosing a forklift battery comes down to matching the truck first and picking the chemistry second. The voltage has to match the forklift, the amp-hour capacity has to cover your shift, and the battery has to suit how and where you charge. Today most buyers are choosing between traditional flooded lead-acid and lithium-ion.

A note on what we carry, so this guide is useful rather than a sales pitch: at Urban Supply, forklift batteries come installed in the electric forklifts we sell, in either lead-acid or lithium-ion versions. We also stock replacement lithium packs and chargers for electric walkie pallet jacks and stackers, plus a battery transfer platform for moving heavy truck batteries. We do not currently list standalone replacement packs for sit-down forklifts, so if you are replacing one, use the checklist below and contact us with your truck's model and battery specs before buying anything.

How to choose a forklift battery

1. Match the voltage exactly

Voltage is not a preference; it is set by the truck's motor and controller. Smaller electric forklifts commonly run on 24V, mid-size trucks on 48V, and some larger trucks on higher voltages. Examples from our catalog:

• EKKO EK16A-138 (3,500 lb, lead-acid): 24V 320Ah
• EKKO EK16A-189LI (3,500 lb, lithium-ion): 24V 200Ah
• EKKO EK25GB (5,000 lb, lead-acid): 48V 600Ah
• EKKO EK25T-LI (5,000 lb, lithium-ion): 80V 202Ah

The two 5,000 lb trucks run at different voltages, so a battery from one would not fit the other. Always read the voltage off the truck's data plate or the existing battery's label.

2. Size amp-hours to your shift

Amp-hours (Ah) are the battery's capacity: more Ah means more working time between charges. Do not compare the Ah label across chemistries one for one. Lead-acid packs generally should not be run down as deeply as lithium, and lithium can be topped up during breaks, so a lithium truck with a lower Ah label can cover a similar working day. That is why the lead-acid EK16A-138 lists 320Ah while the lithium EK16A-189LI lists 200Ah at the same voltage and capacity rating. If you run multiple shifts, think about how and when the truck will charge, not just the label.

3. Choose a chemistry: lead-acid or lithium-ion

Flooded lead-acid is the long-standing standard. It costs less up front and is well understood. It needs regular watering, a full charge followed by a cool-down rather than quick top-ups, and a designated, ventilated charging area.

Lithium-ion costs more up front but simplifies daily work. EKKO's lithium listings describe opportunity charging, no watering, and clean, quiet, zero-exhaust operation. The EK25T-LI lists a 2-hour fast charge. Lithium suits operations that run long or multiple shifts, or that do not want to manage watering and a battery room.

For a deeper side-by-side, see our guide to lithium vs lead-acid forklift batteries.

4. Plan the charger along with the battery

The charger must match the battery's voltage and chemistry. A lithium charger is not interchangeable with a lead-acid charger, even at the same voltage. Charger output (amps) affects how fast you recharge. The Xilin CPD15SE-Li-189 lists a 100A charger for its 24V/250Ah lithium battery, while the lead-acid CPD15SE-197 lists a 40A charger for its 24V/320Ah pack. For pallet jacks, we stock matched chargers such as the 24V/10A and 48V/15A lithium chargers listed for specific MechMaxx models.

5. Respect weight and counterbalance

On a sit-down counterbalance forklift, the battery is part of the truck's counterweight. A battery that is much lighter or a different size can change the truck's stability and rated capacity. Never swap in a different chemistry or a smaller pack on a sit-down truck without confirming it is approved for that model. Walkie pallet jacks and stackers are different: their removable packs are small and built for quick swaps.

6. Think about handling and swapping

Full-size lead-acid forklift batteries are heavy and need proper equipment to move. The Vestil BTC-PJ battery transfer platform, listed at 4,000 lb uniform capacity with a roller deck, is built for loading and unloading fork truck batteries. For pallet jacks, a spare pack is the simplest way to stay running: the Vestil EPT-33-BATT listing notes that an additional battery reduces downtime for charging.

Forklift and material-handling battery comparison

Specs are taken from each product page. Prices change, so check the listing for the current price. Related equipment: the Vestil BTC-PJ battery transfer platform and the 48V/15A lithium pallet jack charger.

Which battery type suits your operation

• Single shift, budget-focused, existing battery room: lead-acid is the lower up-front cost and works well when trucks can charge overnight.
• Multiple shifts or tight break windows: lithium-ion, because it can be topped up during breaks rather than swapped or left to cool down.
• Small warehouses and shops without a ventilated charging area: lithium-ion avoids watering and simplifies where you charge.
• Pallet jack and stacker fleets: keep a spare removable pack and a matched charger so one is always charging while the other works.

Forklift battery FAQ

What voltage is my forklift battery?

Check the truck's data plate or the label on the existing battery. Common sizes are 24V, 36V, 48V and 80V. In our catalog, the EKKO EK16A models run at 24V, the EK25GB at 48V and the EK25T-LI at 80V.

Can I put a lithium battery in a lead-acid forklift?

Sometimes, but not by simply swapping packs. Voltage, physical size, weight (counterbalance), the connector and the charger all have to be correct for that truck. Confirm the conversion is approved for your model before you buy.

Is a lithium forklift battery worth the extra cost?

It usually pays off when trucks run long hours or multiple shifts, or when watering and battery-room upkeep are a burden. For light, single-shift use with overnight charging, lead-acid is often the more economical choice.

Do I need a new charger if I change battery types?

Yes. Chargers are matched to both voltage and chemistry, so a lead-acid charger should not be used on a lithium pack, or the other way around.

Do you sell replacement batteries for pallet jacks?

Yes. We carry 24V and 48V lithium packs and matched chargers for specific electric pallet jacks, plus lithium packs for Vestil pallet trucks and stackers. Check that the listing names your model.

Shop electric trucks with the battery you want: EKKO electric forklifts, lithium and lead-acid, or browse all electric forklifts and electric pallet jacks.