Buying guides
How long do rechargeable tea lights actually last?
28 10 月, 2026 · 6 min read
Every flameless candle listing quotes a runtime. Almost none of them tell you which brightness setting that number refers to, and that is the single biggest variable in the entire calculation.
Here is what the numbers mean in practice, using our own range as the worked example — the logic applies to any brand.
The three settings that change everything
A modern tea light cell holds roughly 200 to 250 mAh. At full brightness the LED draws several times the current it draws at the lowest setting, so runtime does not fall in a straight line — it falls steeply.
| Setting | Approx. current | Runtime on a 200 mAh cell | Ordinary evenings |
|---|---|---|---|
| High | ~4.8 mA | 42 hours | 7 evenings at 6h |
| Default (3rd of 5) | ~3.1 mA | 64 hours | 10 evenings at 6h |
| Low | ~1.8 mA | 110 hours | 18 evenings at 6h |
So “110 hours” and “42 hours” are the same candle. If a listing only quotes one figure, it is almost always the lowest setting, because that is the largest number.
What shortens a charge in real use
- Cold. Lithium cells lose capacity below about 10°C. An outdoor candle in November will run noticeably shorter than the same candle indoors.
- Age. Capacity fades over hundreds of cycles. Expect roughly 80% of the original runtime after a year or two of heavy use.
- Partial charges. Topping up after twenty minutes is convenient but costs a little capacity over time. Let the set run down where you can.
- Flicker mode. A moving wick draws slightly more than steady light, because the driver is modulating the LED rather than holding it at a fixed level.
How to translate runtime into a routine
Take your actual evening: most people run candles for four to six hours. Divide the runtime at your preferred brightness by that number and you have your charging interval. For a 6-hour evening at default brightness on a 200 mAh cell, that is about ten days — which is why a 12-slot dock that charges everything in two hours makes more sense than six individual cables you will lose.
Rule of thumb: at default brightness and six hours a night, a rechargeable tea light needs charging roughly every ten days to two weeks. If yours needs charging every three days, you are running it at full brightness or the cell is ageing.
What “207 hours” really means
Our highest-capacity model quotes 207 hours. That is the lowest brightness setting on a 12-candle set with larger cells. It is a genuine figure, and it is also not the figure you will experience if you like your candles bright. Both statements are true, which is why we publish the range rather than a single hero number.
If a runtime claim arrives without a brightness setting attached, assume it is the best case and halve it for everyday use.