Fenix LD35R vs ThruNite TC20 V3 size comparison
The ThruNite TC20 V3 is 11.4 mm (0.45 in) shorter than the Fenix LD35R, and 1 mm wider at its widest point. It is 12 g heavier (with battery).
The ThruNite TC20 V3 is 11.4 mm (0.45 in) shorter than the Fenix LD35R, and 1 mm wider at its widest point. It is 12 g heavier (with battery).
Dimensions
| Fenix LD35R Check price ↗ | ThruNite TC20 V3 Check price ↗ | |
| Length | 136.4 mm (5.37 in) | 125 mm (4.92 in)−11.4 mm |
| Head / width | 34 mm (1.34 in) | 35 mm (1.38 in)+1 mm |
| Body | 25.4 mm (1.00 in) | 28 mm (1.10 in)+2.6 mm |
| Weight | 185 g with battery | 197 g with battery+12 g |
| Battery | 18650 / 2x CR123A | 21700 |
| Max output | 1,800 lm | 4,720 lm |
| Throw | 337 m | — |
| Type | EDC | EDC |
| Price | $89.95 at fenixlighting.com, as of Nov 4, 2026 | $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | batteryjunction.com sourced |
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LD35R vs TC20 V3: how they differ
Size and weight
The ThruNite TC20 V3 is the shorter light: 125 mm (4.92 in) against 136.4 mm (5.37 in), a difference of 11.4 mm (8%). At its widest point the Fenix LD35R is 1 mm slimmer (34 vs 35 mm). The Fenix LD35R is 12 g lighter (185 g vs 197 g, with battery).
Brightness and throw
The ThruNite TC20 V3 is rated brighter: 4,720 lm maximum vs 1,800 lm for the Fenix LD35R, 162% more.
Battery
The Fenix LD35R runs on removable 18650 / 2x CR123A batteries; the ThruNite TC20 V3 runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Price
When we checked on Nov 4, 2026, the Fenix LD35R was $89.95 at fenixlighting.com and the ThruNite TC20 V3 $79.95 at batteryjunction.com, so the ThruNite TC20 V3 cost $10.00 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog with a tube body.
Which should you buy?
Choose the Fenix LD35R if you want less weight (12 g lighter). Choose the ThruNite TC20 V3 if you want a shorter light (11.4 mm shorter) and more output (4,720 lm vs 1,800 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix LD35R Check price ↗ ThruNite TC20 V3
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
LD35R vs TC20 V3 FAQ
Which is smaller, the Fenix LD35R or the ThruNite TC20 V3?
The ThruNite TC20 V3 is the shorter light: 125 mm (4.92 in) against 136.4 mm (5.37 in), a difference of 11.4 mm (8%). At its widest point the Fenix LD35R is 1 mm slimmer (34 vs 35 mm). The Fenix LD35R is 12 g lighter (185 g vs 197 g, with battery).
Which is brighter, the Fenix LD35R or the ThruNite TC20 V3?
The ThruNite TC20 V3 is rated brighter: 4,720 lm maximum vs 1,800 lm for the Fenix LD35R, 162% more.
Which is cheaper, the Fenix LD35R or the ThruNite TC20 V3?
When we checked on Nov 4, 2026, the Fenix LD35R was $89.95 at fenixlighting.com and the ThruNite TC20 V3 $79.95 at batteryjunction.com, so the ThruNite TC20 V3 cost $10.00 less. Prices change often, so check the current price before you buy.
Do the Fenix LD35R and ThruNite TC20 V3 use the same battery?
The Fenix LD35R runs on removable 18650 / 2x CR123A batteries; the ThruNite TC20 V3 runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Compare Fenix LD35R with similar lights
Compare ThruNite TC20 V3 with similar lights
More
Sources
- Fenix LD35R: specs from Fenix product page (manufacturer). Price $89.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- ThruNite TC20 V3: specs from manufacturer published specs as listed by batteryjunction.com. Price $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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