SR621SW VS SR626SW[Video]: Are they interchangeable?

The SR621SW is a Silver-Oxide cell with a 5-year shelf life that is extensively used in clocks. Other applications include calculators, film cameras, medical tools, cash registers, and financial instruments (measuring instruments, onboard microcomputers, sensors). This is an "SW" battery with a low drain. Low-drain batteries are perfect for devices like analog timepieces, TV remote controls, and alarm clocks that require a small quantity of power over a lengthy period of time. High-drain batteries, on the other hand, are used in devices that have a steady low power consumption with occasional high peaks, such as analog and digital watches with additional functions (backlight, alarm), pocket calculators, electronic games, cameras, and so on.

The SR626SW is a silver oxide watch battery that can be used to replace obsolete batteries or to change the chemistry of coin cells currently in use. Coin cells, which use a silver oxide chemistry, offer a lower self-discharge and a more steady output voltage, making them ideal for powering low-draining, continuous-use devices. Watches, calculators, heart-rate monitors, glucometers, small electronic toys, and keyless remote entry systems for cars and homes are all good candidates for a Murata 377-sized battery. Because these batteries are a specialty size that isn't one-size-fits-all, be sure your equipment is compatible before purchasing.

SR621SW Dimension

SR626SW Dimension

SR621SW Characteristics

SR626SW Characteristics

SR621SW Applications

• Timepieces

• TV remote controls

• Alarm clocks

• Pocket calculators

• Electronic games

• Cameras

SR626SW Applications

• Watch battery

• Pagers

• Memory backup

• Security devices

• Hand-held electronic devices

SR621SW Equivalents

• D364, SP364, 602, 280-34, SB-AG/DG, SR60, SR60L, 531, SR621, GP364, SR621SW, V364

SR66SW Equivalents

• Duracell 377, Duracell D377, Energizer 377, Maxell SR626SW, Panasonic SP377, Renata 377, Sony SR626SW, Timex BA, Toshiba SR626SW, Varta V377

The major differences between the SR621SW and SR626SW are nominal capacity and dimension. The nominal capacity of SR626SW is higher than SR621SW. The nominal capacity of SR621SW is 23mAh, while the nominal capacity of SR626SW is 28mAh, which means SR621SW can deliver more amps in an hour than SR626SW and can last longer than the SR621SW. Additionally, the height of SR621SW and SR626SW is different. The height of SR621SW is 2.15 mm, and the height of SR626SW is 2.6 mm. So they are not interchangeable and the application of they are applied in different places.

• SR621SW Datasheet

• SR626SW Datasheet

Seiko Instruments Inc. (SII) was founded in 1937 as the Seiko Group's primary watch manufacturer. The company provides micro mechatronics products and services, such as watch and HDD components, semiconductors, FPD and electronic devices, network solutions systems, nanotechnology equipment, scientific instruments, and large-format inkjet printers, based on sophisticated micro mechatronics and nanotechnology techniques developed through decades of experience in precision machinery manufacturing and low-power consumption technologies.