Hold-Down. Device for keeping separators from floating or working up.
Hold-Down Clips. Brackets for the attachment of bolts for holding the battery securely in position on the car.
Hydrogen Flame. A very hot and clean flame of hydrogen gas and oxygen, acetylene, or compressed air used for making burned connections.
Hydrogen Generator. An apparatus for generating hydrogen gas for lead burning.
Hydrometer. An instrument for measuring the specific gravity of the electrolyte.
Hydrometer Syringe. A glass barrel enclosing a hydrometer and provided with a rubber bulb for drawing up electrolyte.
Jar. The hard rubber container holding the element and electrolyte.
Lead Burning. Making a joint by melting together the metal of the parts to be joined.
Lug. The extension from the top frame of each plate, connecting the plate to the strap.
Maximum Gravity. The highest specific gravity which the electrolyte will reach by continued charging, indicating that no acid remains in the plates.