Replace one machine
Write the charger you are replacing as one family: battery voltage, charge current, and whether the pack is flooded lead-acid or lithium. Keep a single capacity basis so each factory answers the same amp-hour window instead of mixing a passenger-car charger catalog with an industrial forklift pack.
Name the connector you expect on the replacement. An SB175, a DIN family and a custom electric forklift charger plug are different quoted extras. If the existing cable, wall bracket and equalize timer stay, say so. Browse Charge Units when the family name is still too wide.