They do not affect the functionality of the unit. (1) - CHARGING TECHNOLOGIES 36-1A1B-E3 XTREME POWER MODULAR HF FORKLIFT BATTERY CHARGER 3PH 36VDC 480VAC 18 CELL. PARTS OR REPAIR - ONLY GUARANTEED TO BE AS PICTURED: Our descriptions, and photos represent our best effort to relay all pertinent information about a product.