Abstract: Provided is a buffer body 5 for a lead-acid battery 1 having two terminals 12, the buffer body 5 being made of pulp mold, the buffer body 5 including, in a state where the buffer body 5 is disposed outside a first wall portion 22 facing the two terminals 12 among wall portions of a packing box 2 in which the lead-acid battery 1 is packed: a second wall portion 50 facing the first wall portion 22; and a first recessed portion 53A formed at a position facing the terminal 12 in the second wall portion 50 and recessed in a direction away from the first wall portion 22.

Abstract: An objective is to improve the corrosion resistance of a positive electrode grid for lead acid batteries. Provided is a positive electrode grid for lead acid batteries, and a lead acid battery including the grid. The grid includes a lead alloy containing calcium and tin. The lead alloy has a calcium content of 0.10 mass % or less, and a tin content of 2.3 mass % or less, and a lattice constant of 4.9470 ? or less.

Abstract: An objective is to improve the corrosion resistance of a positive electrode grid for lead acid batteries. Provided is a positive electrode grid for lead acid batteries, and a lead acid battery including the grid. The grid includes a lead alloy containing calcium and tin. The lead alloy has a calcium content of 0.10 mass % or less, and a tin content of 2.3 mass % or less, and a lattice constant of 4.9470 ? or less.

Abstract: In a lead-acid battery including an electrode plate group housed in a cell chamber 6 with an electrolyte, each positive electrode plate includes a positive electrode grid made of lead or a lead alloy containing no antimony, and a positive electrode active material with which the positive electrode grid is filled. Each negative electrode plate includes a negative electrode grid made of lead or a lead alloy containing no antimony, a surface layer formed on a surface of the negative electrode grid and made of a lead alloy containing antimony, and a negative electrode active material with which the negative electrode grid is filled. A mass ratio MN/MP falls within a range of 0.70 to 1.10, where MP represents the mass of the positive electrode active material per cell chamber, and MN represents the mass of the negative electrode active material per cell chamber.

Abstract: A lead-acid battery of the present invention includes electrode plate units, each including a positive electrode plate, a negative electrode plate, and a separator. The positive electrode plate is a positive electrode grid filled with paste including powder of lead oxide as a main component. The negative electrode plate is a negative electrode grid filled with paste including powder of lead oxide as a main component, and including carbon black. The positive electrode plate faces the negative electrode plate. The separator is provided between the positive electrode plate and the negative electrode plate. The positive electrode grid includes gates, each being generally diamond-shaped, and being more than or equal to 50 mm2 and less than or equal to 100 mm2 in area. The carbon black has a DBP oil absorption of more than or equal to 140 ml/100 g and less than or equal to 340 ml/100 g.

Abstract: In a lead-acid batter including an electrode plate group housed in a cell chamber with an electrolyte, each positive electrode plate includes a positive electrode grid made of lead or a lead alloy containing no antimony, and a positive electrode active material with which the positive electrode grid is filled. Each negative electrode plate includes a negative electrode grid made of lead or a lead alloy containing no antimony, a surface layer formed on a surface of the negative electrode grid and made of a lead alloy containing antimony, and a negative electrode active material with which the negative electrode grid is filled. A mass ratio MN/MP falls within a range of 0.70 to 1.10, where MP represents the mass of the positive electrode active material per cell chamber, and MN represents the mass of the negative electrode active material per cell chamber.

Abstract: A lead-acid battery of the present invention includes electrode plate units, each including a positive electrode plate, a negative electrode plate, and a separator. The positive electrode plate is a positive electrode grid filled with paste including powder of lead oxide as a main component. The negative electrode plate is a negative electrode grid filled with paste including powder of lead oxide as a main component, and including carbon black. The positive electrode plate faces the negative electrode plate. The separator is provided between the positive electrode plate and the negative electrode plate. The positive electrode grid includes gates, each being generally diamond-shaped, and being more than or equal to 50 mm2 and less than or equal to 100 mm2 in area. The carbon black has a DBP oil absorption of more than or equal to 140 ml/100 g and less than or equal to 340 ml/100 g.

Abstract: The lead-acid battery of the present invention includes electrode plate units, each including a positive electrode plate, negative electrode plate, and a separator. The positive electrode plate is a positive electrode grid filled with paste of lead suboxide powder. The negative electrode plate is a negative electrode grid filled with paste of lead suboxide powder and carbon black. The positive electrode plate faces the negative electrode plate. The separator is provided between the positive electrode plate and the negative electrode plate. The amount of DBP oil absorption of the carbon black is more than or equal to 140 ml/100 g and less than or equal to 340 ml/100 g. The negative electrode plates are joined together by a strap of a lead alloy substantially without antimony.

Abstract: A battery comprises at least four cells each comprising a bath in the shape of a rectangular parallelepiped having a width direction dimension greater than a thickness direction dimension, and a power generation element, the power generation element being contained in the bath, the thickness direction sides of the cells facing each other, and the width direction sides of the cells being arranged side by side. A coolant for cooling the cells is allowed to flow along the width direction sides of the cells.

Abstract: A sealed lead-acid battery includes a separator made from hydrophilic treated sheet made from synthetic fiber which wraps at least either one of a positive electrode and a negative electrode. A mat type separator made from fine glass fiber is disposed between the wrapped electrode and its opposite electrode. This structure is adopted in a battery which uses a paste type electrode where an expanded grid having no outer frame on both edges is used, thereby prolonging cycle life even after cycling of charge and deep discharge.

Abstract: A battery comprises at least four cells each comprising a bath in the shape of a rectangular parallelepiped having a width direction dimension greater than a thickness direction dimension, and a power generation element, the power generation element being contained in the bath, the thickness direction sides of the cells facing each other, and the width direction sides of the cells being arranged side by side. A coolant for cooling the cells is allowed to flow along the width direction sides of the cells.

Abstract: A sealed lead-acid battery includes a separator made from hydrophilic treated sheet made from synthetic fiber wraps at least either one of positive electrode and negative electrode, and a mat type separator made from fine glass fiber is disposed between the wrapped electrode and its opposite electrode. This structure is adopted in a battery which uses a paste type electrode where an expanded grid having no outer frame on both edges is used, thereby prolonging cycle life even after cycling of charge and deep discharge.

Abstract: A sealed lead-acid battery includes a separator made from hydrophilic treated sheet made from synthetic fiber which wraps at least either one of a positive electrode and a negative electrode. A mat type separator made from fine glass fiber is disposed between the wrapped electrode and its opposite electrode. This structure is adopted in a battery which uses a paste type electrode where an expanded grid having no outer frame on both edges is used, thereby prolonging cycle life even after cycling of charge and deep discharge.

Abstract: A thermal pen of thick film type comprises a thermal pen tip and a thermal pen tip holder connected to the thermal pen tip for holding the thermal pen tip. The thermal pen tip comprises a high resistance substrate formed in the form of a pen point, a heater element formed in the form of a thick film on the end of the pen point of the high resistance substrate and an electric conductor formed in the form of a thick film so as to connect to the heater element. The thermal pen tip is preferably provided with a heat-resistant protective coating to cover the end of the pen point. A heat- and wear-resistant heat-sensitive recording piece is preferably provided in a heat conductive relation to said heater element.