9-volt, E, or PP3 battery is a really popular 9V rectangle-shaped battery frequently used in portable radios, cameras, walkies-talkies, exhilaration alarms, alert clocks, and other applications that call for slightly bigger voltage native a single battery.

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9V batteries deserve to be both non-rechargeable or rechargeable batteries, featuring various chemistries.

Physical dimensions of 9V E or PP3 battery room 48.5 mm height, 26.5 mm length, and 17.5 mm width. Battery terminals space positioned top top the exact same battery end: "+" is a male clasp, and "-" is a mrs clasp.

Its most common names encompass 9V battery, 9-volt battery, E battery, PP3 battery, MN1604 battery, and also similar.

Labels according to IEC and ANSI standards count on the chemistry involved.



According to ANSI standard:

- 1604A (alkaline),

- 1604D (carbon-zinc),

- 1604LC (lithium),

- 7.2H5 (nickel-metal hydride),

- 11604 (nickel-cadmium),

- 1604M (mercury-oxide).

According to IEC:

- 6LR61 (alkaline),

- 6F22 (carbon-zinc),

- 6KR61 (nickel-cadmium),

- 6HR61 (nickel-metal hydride).

Note that mercury batteries space obsolete and no much longer in use.

The nominal volume of a 9V battery counts on the chemistry:

- 550-600 mAh (alkaline),

- 400 mAh (carbon-zinc),

- 1200 mAh (non-rechargeable lithium),

- 175-300 mAh (nickel-metal hydride),

- 100-120 mAh (nickel-cadmium),

- 200-650 mAh (rechargeable lithium),

- 580 mAh (mercury-oxide, obsolete).

The nominal voltage of these 9V batteries relies on the chemistry and also internal design.

The adhering to comparison graph lists few of the most famous 9-volt battery chemistries through their most crucial features and specifications:

Battery TypeTypical CapacityNominal Voltage
Primary(Non-Rechargeable)Zinc-Carbon400 mAh9V
Alkaline550-600 mAh9V
Lithium1200 mAh9V
Secondary(Rechargeable)NiCd100-120 mAh7.2, 8.4, 9.6V
NiMH175-300 mAh7.2, 8.4, 9.6V
Lithium Polymer500-550 mAh7.4V (11.1V)
Lithium-Ion600-650 mAh7.4V (11.1V)
LiFePO4200-320 mAh9.6V

Alkaline 9V batteries frequently contain 6 LR61 cell which space very similar to AAAA cell (42.5 x 8.3 mm) - hence IEC labels. However, over there are other designs together well, for example, with rectangular cells.

Alkaline 9V batteries have a nominal voltage the 9.0 V and also a cut-off voltage that 6.0 volts.

NiCd and NiMH 9V batteries can have 6, 7, or even 8 cells, offering 7.2, 8.4, or 9.6 volts - they attribute 1.2V/Cell. NiCd batteries are able come provide strong currents yet have a very strong memory effect and also they are anything yet environment-friendly batteries.

Modern Nickel steel Hydride batteries have really low, if any, memory effect, they space environment-friendly batteries (but they also must it is in disposed that properly!), have actually a low-self discharge rate, and also are quiet used, return they space being phased out in favor of rechargeable 9V lithium batteries.

Lithium non-rechargeable 9V batteries contain three 3V cells giving 9.0 in the name voltage through a cut-off voltage that 6.0 volts, similar to alkaline batteries.

Modern 9V lithium batteries feature an extremely low-self discharge prices (sometimes even less 보다 10% every year), permitting their use in standby applications.

Rechargeable lithium 9V batteries have two or 3 3.6 volts cells and generally have actually a nominal voltage of 7.2 or 10.8 volts. We say generally since some manufacturers do 9V batteries making use of lithium-ion (7.2 or 10.8V internally) or lithium-polymer (7.4 or 11.1V internally) with digital protection circuitry i m sorry monitors battery status and also provides the calculation under- or over-voltage protection.

Note: as soon as charging lithium 9V rechargeable batteries, the is highly recommended to use battery chargers recommended by the battery manufacturer. Some manufacturers make lithium battery chargers that should NOT be used for charging lithium battery of other manufacturers due to the security electronics uncovered in your batteries. If you need a an excellent and safe rechargeable lithium battery and charger, probably the ideal option is to buy them as a combo/bundle.

For Short: 9V batteries, additionally labeled as 9-volt, E battery, PP3, 6LR61, 6F22, 1604A, 1604D, MN1604, etc. Are common batteries often uncovered in various devices at home. They have the right to be discovered at regional or virtual stores and also if required, easily ordered.

If you are unsure which one come take, walk for alkaline or lithium non-rechargeable models, and don"t worry around charging them.

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If you require rechargeable 9V batteries, go for the batteries/battery charger bundle/combo of trusted brands.