Nine-volt battery

A 9- V-Block is a standardized, widely used size of batteries and accumulators.

Standards

There are 9 volt block batteries also in "extra large". A variant is IEC 6F100 (ANSI PP9 1603S ) with 75-80 mm high, 64-66 mm wide, 50-52 mm in depth and weighs about 360-380 grams in zinc-carbon technology with 4,600 mAh. Use are found in electric fences, construction site lighting, alarm systems, radio. Examples are Varta V439 and Panasonic PP9RZ / B.

Construction

The cube-like outer dimensions are 48.5 mm × 26.2 mm × 17 mm. Internally connected either six round cells type LR61 (mini- cells) or six flat- type cells F22 to 1.5V each electrically in series. The electrical connection is via a push-button type contacts on one end side.

Electrochemical Systems

9 V blocks are made ​​with different electrochemical systems, which can be clearly different from the rated voltage, capacity and resilience.

Currently alkaline and carbon-zinc primary cells are commercially available. In addition, batteries are still offered based on Lithium.

In secondary cells today usually 7 NiMH cells with 1.2 V are common, which corresponds to a total voltage of 8.4V.

The capacity of standard 9 -volt carbon-zinc batteries is 190-330 milliamp hours ( mAh), the type Alkaline between 500 and 600 mAh and lithium 900-1300 mAh.

Application

9 V - blocks are mainly used in small electric appliances, the microelectronics Although a higher voltage, but rather only requires little electrical power. Examples are measuring instruments, toys, remote controls, transistor radios and smoke detectors.