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Duracell® Coppertop Alkaline Batteries, 9V, 4/Pack (MN16RT4Z)Duracell® Coppertop Alkaline Batteries, 9V, 4/Pack (MN16RT4Z)
19.61
Item #503573
Model #MN16RT4Z
  • Duracell 9V Batteries: The Duracell Coppertop 9 Volt alkaline battery is designed for use in office items like smoke and CO2 detectors, digital scales, and more.
  • Duracell guarantees these batteries against defects in material and workmanship. Should any device be damaged due to a battery defect, they will repair or replace it at their option
$19.61
4/Pack ($4.9/Battery)
Free delivery
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Duracell® Coppertop 9V Alkaline Batteries, 2/Pack (MN1604B2Z)Duracell® Coppertop 9V Alkaline Batteries, 2/Pack (MN1604B2Z)
11.98
Item #318972
Model #MN1604B2Z
  • Duracell 9V Batteries: The Duracell Coppertop 9 Volt alkaline battery is designed for use in office items like smoke and CO2 detectors, digital scales, and more.
  • Duracell guarantees these batteries against defects in material and workmanship. Should any device be damaged due to a battery defect, they will repair or replace it at their option
$11.98
2/Pack ($5.99/Battery)
Free delivery
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Duracell® Coppertop 9V Alkaline Batteries, 12/Pack (MN1604BKD)
55.99
Item #711256
Model #MN1604BKD
  • Duracell 9V Batteries: The Duracell Coppertop 9 Volt alkaline battery is designed for use in office items like smoke and CO2 detectors, digital scales, and more.
  • Duracell guarantees these batteries against defects in material and workmanship. Should any device be damaged due to a battery defect, Duracell will repair or replace it at thier option.*
$55.99
12/Pack ($4.67/Battery)
Free delivery
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Duracell® Coppertop Alkaline Batteries, 9V, 4/Pack (MN154DW)Duracell® Coppertop Alkaline Batteries, 9V, 4/Pack (MN154DW)
In store only
17.7
Item #702508
Model #MN154DW
  • Duracell 9V Batteries: The Duracell Coppertop 9 Volt alkaline battery is designed for use in office items like smoke and CO2 detectors, digital scales, and more.
  • Duracell guarantees these batteries against defects in material and workmanship. Should any device be damaged due to a battery defect, they will repair or replace it at their option
$17.70
1Each
Pick up in 1 hour
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Energizer Ultimate Lithium Battery, 9V (L522BP)Energizer Ultimate Lithium Battery, 9V (L522BP)
10.99
Item #1680204
Model #L522BP
  • 1-pack of Energizer Ultimate Lithium [9V] batteries
  • Our Longest-Lasting 9V Battery
$10.99
1Each
Free delivery
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For use in small electronic devices, domestic appliances, and other home security devices, 9V batteries are an essential power source, alongside AA, AAA, C, and D batteries. They are rectangular with rounded edges, unlike the cylindrical dry cells. Both terminals are on the same top end rather than on two opposite ends. They contain multiple cells joined together in an enclosed water-resistant wrapper. The battery has a high voltage output, making it suitable for transistor radios, smoke detectors, and flashlights. The batteries come one to a package or in packs of two or more. Browse for multiple offers of high-performance 9-volt batteries at Staples.

Rechargeable 9V batteries for regularly used electronics
Choose rechargeable 9-volt batteries suitable for better charge capacity. There are various options of rechargeable battery cells that deliver high performance, with longer shelf life than disposable 9-volt batteries. The various types of rechargeable 9V batteries include nickel-cadmium (NiCd), lithium-ion, and nickel-metal hydride (NiMH) cells. NiCd cells are rare, while the other two types have standard qualities, enhancing high performance. For example, the 9-volt NiMH cells have a high-capacity store of up to 300 milliampere hour (mAh) of a charge and can power devices for a long time. Low self-discharge NiMH batteries have a lower discharge rate. Choose this type when stocking up on spare batteries. NiCd and NiMH cells use six to eight cells of 1.2 volts. Lithium-ion cells contain two cells with a normal voltage of 3.7 to 4.2 volts. The rechargeable lithium-ion cells have twice the capacity as NiMH.

Disposable 9V batteries for low-drain devices
Disposable 9V battery packs come as alkaline, lithium, or zinc-carbon cells. The alkaline variants are popular. They have a capacity of 550mAh, ideal for powering devices such as flashlights, radios, and other small accessories. The zinc variant cells are not expensive and have a capacity of 400mAh. They tend to perform poorly in cold environments. Lithium variant cells are powerful 9V batteries. They have a capacity of up to 1200mAh charge, with a low self-discharge rate and longer lifetime. Such features make them a superb power source for smoke detectors and other low-drain and infrequently used appliances.

Other considerations about 9V batteries
In addition to considering recharge capabilities, capacity, and use of the batteries, it's important to consider other factors such as the size of the battery pack and brands. The batteries come in different packs ranging from single batteries to packages with 24 or more in them.

Are there special sizes of 9V batteries?
Typically, the cells are 1.9 inches in height, and 0.68 inches in thickness with a 0.5-inch gap between the terminals, called PP3. There are variations in battery sizes to fit inside battery compartments in various devices comfortably. Choose the correct battery size, such as PP7 and PP8 batteries, which can fit into specific devices.

Are there special chargers for different 9-volt batteries?
Yes. Because the power cells physically vary, they require different chargers designed to fit the different sizes of rectangular units. The rechargeable batteries require separate chargers.

Do rechargeable 9-volt batteries vary in voltage with disposable ones?
Yes, the disposable 9V batteries produce 9 volts, while rechargeable batteries can produce higher volts. The output of rechargeable batteries varies from 7.2 to 9.6 volts. Those with an output of 9.6 are rare but ideal for power-hungry devices with high drain capacity.