Robic Timer Battery Information

Most Robic Timers use lithium batteries for long life. The US DOT considers these little batteries to be a hazardous material and has placed restrictions on how they may be shipped (including an extra compliance fee, which is higher than the price of the battery). Fortunately, these batteries are very common items that can be purchased locally at national chain stores such as Walgreen's, CVS, Wal-Mart, Target, and even most grocery stores. Some larger variety stores with watch departments may also have them for sale.

If you take the battery out of your timer, you will see the battery number stamped on it. You can use any brand of battery you like, as long as it has that same number on it.

The CR2025 battery is used in the following Robic models:
SC-505 Multi-Mode Chronograph, formerly Pegasus Part No. 5035 (until 2010)
SC-544 Speed Timer / Twin Chrono 7, formerly Pegasus Part No. 5036, 5040, 5048
SC-554 Speed Timer / Twin Chrono 20, formerly Pegasus Part Nos. 5031, 5032, 5034 (until 2010)
SC-514S Speed Timer

The CR2032 battery is used in the following Robic models:
SC-505W Multi-Mode Chronograph, Part No. 5035 (after 2010)
SC-554W Speed Timer / Twin Chrono 20, formerly Pegasus Part Nos. 5031, 5032, 5034 (after 2010)
SC-577 Wristwatch, formerly Pegasus Part No. 5058
SC-584 Wristwatch, formerly Pegasus Part No. 5042
SC-606 50 Lap Dual Memory Stopwatch, Part No. 5078-102
SC-636 Heat Stress and Comfort Index Stopwatch, formerly Pegasus Part No. 5078-103
SC-800 Sports Chronometer, formerly Pegasus Part Nos. 5033, 5043, 5046
SC-808 200 Lap Memory Speed Chrono, formerly Pegasus Part Nos. 5055, 5065, 5066
SC-848 300 Dual Memory Speed Chrono, formerly Pegasus Part No. 5078-101
SC-888 Triple Timer Speed-Chrono, formerly Pegasus Part Nos. 5037, 5038, 5039
SC-889 Dual Memory Chronograph, formerly Pegasus Part No. 5078-105
SC-899 Triple Timer Countdown Chronograph, Part No. 5078-106
HW30 Heat / Humidity Stopwatch, formerly Pegasus Part No. 5057
Oslo Silver 60 Dual Memory Stopwatch, formerly Pegasus Part No. 5078-104

If your watch is not listed here, and if your battery is missing, you may be able to figure it out with a simple test.

The CR2025 and CR2032 both measure 20mm diamter, just about the same diameter as a US or Canadian penny. Two pennies are thicker than the CR2025 and almost as thick as the CR2032. If two pennies fit in the battery compartment without a problem, your watch takes a CR2032. If the battery cover will not close without a struggle (don't force it!), it takes a CR2025.

If the diameter of the battery compartment is too small for a penny to fit, you might need an LR44 battery. The LR44 measures 11.4mm x 5.2mm thick, just slightly larger in diameter than a AAA battery (but much shorter). You probably have AAA batteries in your TV remote control. If the diameter of a AAA battery just about fills the battery compartment, your watch takes an LR44.