Klarus XT21C vs Nitecore P23i size comparison
The Nitecore P23i is 3 mm (0.12 in) shorter than the Klarus XT21C, and 4 mm narrower at its widest point.
The Nitecore P23i is 3 mm (0.12 in) shorter than the Klarus XT21C, and 4 mm narrower at its widest point.
Dimensions
| Klarus XT21C Check price ↗ | Nitecore P23i Check price ↗ | |
| Length | 147 mm (5.79 in) | 144 mm (5.67 in)−3 mm |
| Head / width | 35 mm (1.38 in) | 31 mm (1.22 in)−4 mm |
| Body | 25 mm (0.98 in) | 25 mm (0.98 in)same |
| Weight | 110 g listed | — |
| Battery | 21700 | 21700 |
| Max output | 3,000 lm | 3,000 lm |
| Throw | 324 m | 470 m |
| Type | Tactical | Tactical |
| Price | $104.95 at batteryjunction.com, as of Nov 4, 2026 | $99.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | batteryjunction.com sourced Retailer weight (297 g) looks inconsistent with this size; omitted until confirmed |
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XT21C vs P23i: how they differ
Size and weight
The Nitecore P23i is the shorter light: 144 mm (5.67 in) against 147 mm (5.79 in), a difference of 3 mm (2%). At its widest point the Nitecore P23i is 4 mm slimmer (31 vs 35 mm).
Brightness and throw
Both are rated at 3,000 lm maximum output. For beam distance the Nitecore P23i reaches further: 470 m vs 324 m rated throw (45% more).
Battery
Both run on a removable 21700 battery, so spare cells work in either light.
Price
When we checked on Nov 4, 2026, the Klarus XT21C was $104.95 at batteryjunction.com and the Nitecore P23i $99.95 at batteryjunction.com, so the Nitecore P23i cost $5.00 less. Prices change often, so check the current price before you buy.
Type
Both are tactical lights in our catalog with a tube body.
Which should you buy?
Choose the Nitecore P23i if you want a shorter light (3 mm shorter), a slimmer profile (4 mm narrower) and longer throw (470 m vs 324 m). On the specs we track, the Nitecore P23i is ahead or level everywhere; the Klarus XT21C makes sense mainly if its price, interface or a feature we don't track suits you better. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Klarus XT21C Check price ↗ Nitecore P23i
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XT21C vs P23i FAQ
Which is smaller, the Klarus XT21C or the Nitecore P23i?
The Nitecore P23i is the shorter light: 144 mm (5.67 in) against 147 mm (5.79 in), a difference of 3 mm (2%). At its widest point the Nitecore P23i is 4 mm slimmer (31 vs 35 mm).
Which is brighter, the Klarus XT21C or the Nitecore P23i?
Both are rated at 3,000 lm maximum output. For beam distance the Nitecore P23i reaches further: 470 m vs 324 m rated throw (45% more).
Which is cheaper, the Klarus XT21C or the Nitecore P23i?
When we checked on Nov 4, 2026, the Klarus XT21C was $104.95 at batteryjunction.com and the Nitecore P23i $99.95 at batteryjunction.com, so the Nitecore P23i cost $5.00 less. Prices change often, so check the current price before you buy.
Do the Klarus XT21C and Nitecore P23i use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Klarus XT21C with similar lights
Compare Nitecore P23i with similar lights
More
Sources
- Klarus XT21C: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $104.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
- Nitecore P23i: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: shape measured from manufacturer photo (batteryjunction.com), scaled to the published length and diameter. Price $99.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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