Battery needs vary by style. Many LED taper or cake-style flameless candles use 2 AAA batteries per candle (a 4-pack would therefore list 8 AAA total). Larger flameless pillar candles typically use 2 C batteries per candle.
Run time depends on the candle and usage. Some pillars can operate more than 1,000 hours on two C batteries. Candles with a built-in timer (commonly 5 hours on / 19 hours off) can stretch battery life — in some listings that equates to up to six months of typical intermittent use on one set of batteries.
Sparkler number candles are labeled for outdoor use. Light them with a lighter and hold by the metal handle; allow the sparkler to burn out or extinguish it by submerging it in water rather than blowing it out.
Customer reviews commonly praise a decorative or “fancy” appearance, vibrant colors that enhance cakes, perceived good quality, reliable performance, and strong value—especially for multi-pack purchases.
Tall cake candles are primarily shown for birthdays and party celebrations (including graduations, milestone birthdays, and anniversaries). Flameless pillar candles are also presented for home decor use.