This invention seeks to provide a novel method for removing membranous lead sulfate deposited on electrodes of a lead-acid battery by dissolving the lead sulfate into fine particles without causing the membranous lead sulfate to fall off or be suspended in...

The present invention relates to a lithium secondary battery with a built-in protective circuit, which includes battery case (1), a battery core (2) and electrolyte. According to the present invention, a built-in protective circuit module (4) is provided t...

A battery pack system is provided that can be replaced easily without modifying the side of an appliance using this battery pack system, on which charging is controlled by a voltage control, and includes a secondary battery with high performance that under...

A power providing device that has a battery (10), a protective housing (28) a terminal cap (34), and a fuse (25) on a substrate (22).

A protection device and a method of protecting an electrical component. The protection device has a protective housing and a terminal cap. The protective housing has a base with a contact hole therethrough for receiving an electrical terminal pin, and has ...

A protection device for an electrical component that has a protective housing and a terminal cap. The protective housing has a base with a contact hole therethrough for accommodating an electrical terminal pin. A projecting perimeter wall extends from the ...

A protection device and a method for protecting an electrical component. The protection device has a protective housing (11) and a terminal cap. The protective housing (11) has a base (12) with a contact hole (55) therethrough for receiving an electrical t...

A protective circuit for protecting a rechargeable battery from battery breakdown caused by prolonged overcharging, and a protective element incorporated in this circuit are provided. A main protective circuit (A) is equipped with main control means (1) fo...