Toshiba CR1620 3V Lithium Coin Battery 5-Pack

The problem with coin cell batteries is that you never notice them until something stops working — your car remote stops responding in a parking lot, your watch freezes mid-day, or your fitness tracker goes dark. The Toshiba CR1620 5-Pack is the practical fix: stock a few, keep them in a drawer, and the next time a device dies you're sorted in 30 seconds. The CR1620 size (16mm diameter, 2.0mm height) covers a specific category of slim devices that can't fit the more common CR2032, so having spares specifically for your key fob or thin watch matters.

Toshiba uses lithium manganese-dioxide chemistry here, which gives these cells two advantages over cheaper alternatives: a flat discharge curve that holds 3V consistently until near the end of life, and long-term stability in storage. The rated 620mAh capacity and 10-year shelf life are competitive for this cell size. The packaging is straightforward tearstrip consumer format — nothing fancy, but it keeps the batteries protected and lets you store unused cells cleanly. For the price of a single name-brand replacement at a pharmacy, you're getting five cells with Japanese engineering behind them.