| Battery Chemistry | Battery type and operating characteristics | Lead-acid for lower initial cost; lithium-ion, commonly LFP, for frequent or multi-shift operation | Technical datasheet, cell chemistry declaration, operating-temperature range, and application recommendation | 5% |
| Rated Voltage | Nominal system voltage compatibility | Common forklift systems include 24 V, 36 V, 48 V, 72 V, and 80 V | Forklift nameplate, connector configuration, charger output, and battery dimensional drawing | 8% |
| Capacity | Rated energy or ampere-hour capacity | Capacity must meet the truck manufacturer's specified range and the required duty cycle | Capacity test conditions, discharge rate, end-of-discharge voltage, and independent test report | 8% |
| Usable Energy | Energy available during normal operation | Compare usable kWh, not only nominal Ah; allowable depth of discharge must be clearly stated | Usable-energy calculation, discharge curve, depth-of-discharge limit, and battery-management-system settings | 7% |
| Cycle Life | Number of charge-discharge cycles until stated remaining capacity | Lithium-ion cycle-life claims should specify test conditions and remaining-capacity threshold; lead-acid life depends strongly on depth of discharge and maintenance | Cycle-test report stating load profile, temperature, charging method, depth of discharge, and end-of-life capacity, commonly 80% | 10% |
| Energy Efficiency | Charge and discharge efficiency | Compare complete system efficiency, including charger and battery, rather than battery efficiency alone | Measured input and output energy, charger efficiency data, regenerative-braking compatibility, and test conditions | 6% |
| Safety Certification | Electrical, mechanical, and battery safety compliance | Relevant documentation may include IEC 60254 for traction batteries, IEC 62619 for industrial lithium secondary cells, and applicable forklift safety requirements | Valid certificates, test reports, certification scope, model numbers, and issuing laboratory details | 12% |
| Transport Compliance | Requirements for shipping rechargeable lithium batteries | Lithium batteries offered for transport should have applicable UN 38.3 test evidence and correctly prepared transport documentation | UN 38.3 test summary, safety data sheet, packaging specification, labels, and dangerous-goods shipping procedure | 5% |
| Battery Management System | Monitoring and protection functions | Overcharge, over-discharge, over-temperature, over-current, short-circuit, cell balancing, and fault logging should be covered | BMS protection thresholds, communication protocol, event log, firmware-control procedure, and diagnostic software demonstration | 10% |
| Thermal Management | Temperature monitoring and heat control | Temperature sensors should monitor cells or modules; charging and discharging limits must be defined for the intended environment | Sensor layout, thermal test data, low-temperature charging controls, ventilation requirements, and emergency shutdown logic | 6% |
| Mechanical Fit | Dimensions, mass, mounting, and connector compatibility | Battery dimensions, center of gravity, lifting points, and total mass must remain within the forklift manufacturer's limits | Certified dimensional drawing, weight tolerance, center-of-gravity data, connector pinout, and fit-test record | 7% |
| Charging System | Charger compatibility and charging time | Charging current, voltage profile, communication method, and charging time must match the battery chemistry and BMS | Approved charger list, charging curve, estimated time from 10% to 100%, interlock behavior, and installation requirements | 6% |
| Total Cost of Ownership | Lifecycle cost rather than purchase price alone | Include battery, charger, installation, energy, maintenance, spare parts, downtime, replacement, and recycling costs | Five-year or expected-life cost model using duty-cycle data, electricity rates, labor costs, warranty assumptions, and replacement intervals | 8% |
| Warranty Coverage | Warranty period, capacity retention, and exclusions | Warranty should state time, operating hours or cycles, minimum remaining capacity, and permitted operating conditions | Signed warranty document, claim process, exclusions, response time, freight responsibility, and pro-rata provisions | 5% |
| After-Sales Support | Technical response, spare parts, and service capability | Defined response times, remote diagnostics, local service coverage, and documented replacement-parts availability | Service-level agreement, support contact details, technician qualifications, spare-parts lead time, and escalation procedure | 7% |