9 volt block

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9 V block

9 volt block is the common name for a standardized, widespread size of a battery . It is a cuboid battery that usually consists of six 1.5 V cells stacked on top of each other and is 48 mm high, 26 mm wide and 17 mm deep (according to the IEC standard). This results in a volume of about 21 cm³.

Designs and cell types

IEC ANSI designation Dimensions
L × W × H (mm) 		Mass
(g) 		nominal voltage typ. nominal charge ( mAh )
Zinc-carbon Alkali manganese Lithium system
6LR61 / AM-6
( 6F22 ) 		1604D
PP3 		E block
9 V block 		48.5 × 26.2 × 17 40 ± 6 9 V (6 × 1.5 V cells in series):
6LR61: 6 round cells of type LR61
6F22: 6 flat cells of type F22 		190 ... 330 500 ... 600 800… 1200
6F100 603S
PP9 		Mikrodyne battery
(before 1964) 		75… 80 × 64… 66 × 55… 52 370 ± 10 9 V 4300

A 9 V block of alkaline manganese cells can be constructed in different ways: either six round cells of type LR61 or six flat cells of type F22 are used.

The lithium systems differ in configuration and capacity as well as in the nominal voltage. A compatible exchange is not possible in all devices.

Other designs

Comparison of 9 V block (PP3 / PP9)

The 9-volt block batteries are also available in "extra large". One variant is IEC 6F100 (ANSI 1603S PP9) with a height of 75–80 mm, a width of 64–66 mm, a depth of 50–52 mm and a weight of approx. 360–380 grams in zinc-carbon technology with approx. 4600 mAh. It is used u. a. in electric fences, construction site lighting, alarm systems and radios. Examples are Varta V439 and Panasonic PP9RZ / B.

construction

Opened 9 V batteries with six flat cells (6F22) or six round cells (6LR61)

The cuboid external dimensions are 48.5 mm × 26.2 mm × 17 mm. Internally, either six round cells of the type LR61 ( mini cells ) or six flat cells of the type F22 of 1.5 V each are electrically connected in series . The electrical connection is made via pushbutton-shaped contacts on one face.

Electrochemical Systems

Rechargeable 9 V block with seven NiMH secondary cells

9 V blocks are manufactured with various electrochemical systems that can differ significantly in terms of open circuit voltage , capacity and load capacity.

9 V blocks are common as non-rechargeable primary cells with six cells as alkali-manganese batteries , and earlier also with non-leak-proof six zinc-carbon cells . Furthermore, 9 V blocks based on the lithium manganese dioxide battery Li-MnO 2 with three cells of 3.5 V (open circuit voltage 10.5 V) are available. Alternatively, they are also available with a slightly higher open circuit voltage of 11.1 V as lithium thionyl chloride battery Li-SOCl 2 with three cells of 3.7 V each.

Rechargeable secondary cells (accumulators) are usually designed as nickel-metal hydride accumulators with seven cells of 1.2 V; the open circuit voltage is 8.4 V. There are also batteries with eight cells and an open circuit voltage of 9.6 V.

The electrical charge of the fresh or freshly charged battery is colloquially called capacity. This capacity is often given in mAh, which physically does not correspond to energy, but to a charge. The energy of a cell is correctly given in Wh. When specifying the energy contained, the discharge current always plays a role (and thus the discharge time and the energy loss in the internal resistance of the battery). The Peukert equation takes into account u. a. the influence of the discharge current and the type of cell. With a discharge current of 20 mA, commercially available alkaline manganese cells deliver between 3.9 and 4.5 Wh of energy.

application

9 V blocks are mainly used in smaller electrical devices, the microelectronics of which require a higher voltage , but rather only low electrical power . Examples are gauges , toys , remote controls , transistor radios, and smoke detectors .

literature

  • David Linden, Thomas B. Reddy (Eds.): Handbook of Batteries . 3. Edition. McGraw-Hill, New York 2002, ISBN 0-07-135978-8 (English).

Web links

Commons : 9 volt block batteries  - collection of pictures, videos and audio files

Individual evidence

  1. ↑ a b Product Datasheet Energizer LA522. (PDF) Advanced Lithium. In: energizer.com. Energizer Holdings Inc., accessed December 24, 2013 .
  2. ↑ LONGLIFE 9V Bloc - Reliable performance for everyday devices. In: varta-consumer.com. VARTA Consumer Batteries GmbH & Co. KGaA, archived from the original on December 25, 2013 ; accessed on December 25, 2013 .
  3. ↑ HIGH ENERGY 9V Bloc - Unbeatable performance for energy-intensive applications. In: varta-consumer.com. VARTA Consumer Batteries GmbH & Co. KGaA, archived from the original on December 25, 2013 ; accessed on December 25, 2013 .
  4. ↑ 9V blocks (not only) for smoke detectors in comparison. In: zerobrain.info. Dominik Schuierer, October 21, 2016, accessed October 24, 2016 .