High Quality 3V Lithium Button Battery CR2032 for Watches, Remote Controls and Toys - Long Lasting Power Supply

That 210mAh capacty is actually pretty decent for a standard CR2032, and it’s what most buyers go with for watches or small remotes where you’re swapping them every year or so anyway — but if you’re driving a medical device that needs reliabel voltge at low drain, this holds tight at 3V across the curve. 2. We’ve got a flat terminal design on these, so polarity is clear with the positive on top, but basically don’t stack them loose in a drawer unless you’re okay with a short. 3. It’s CE and RoHS certified with IEC and SGS supporting the safety docs, so no one’s going to hassle you on compliance. Shell life is roughly 10 years at 20°C if stored dry, and the self-discharge rate is less than 1% annually (usually it’s around 0.6% in controlled conditions). 4. Actually, for cold environments down to -20°C we’ve tested these and they still deliver, so fobs or outdoor toy remotes are fine. Two sizes of single one you want to watch on the 3.2mm height — some manufacturers skimp, but ours holds to standerd. Custom labeling and blister card packaing options let you brand them, and for bulk our company can do 50 packs or 100 depending on your MOQ. 5. Not great for high-drain LED blinkers though where you’re pulling 30mA continuously — that capacity drains faster than you’d think, so stick with alkaline coin cells for constant current toys. We usually have stock on 20mm diameter units, but confirm lead time if you’re ordering above 5,000 because blister card kit takes 2-3 weeks extra.