Fenix E08R UE vs ThruNite TC20 V3 size comparison
The ThruNite TC20 V3 is 4 mm (0.16 in) shorter than the Fenix E08R UE, and 4 mm wider at its widest point. It is 72 g heavier (with battery).
The ThruNite TC20 V3 is 4 mm (0.16 in) shorter than the Fenix E08R UE, and 4 mm wider at its widest point. It is 72 g heavier (with battery).
Dimensions
| Fenix E08R UE Check price ↗ | ThruNite TC20 V3 Check price ↗ | |
| Length | 129 mm (5.08 in) | 125 mm (4.92 in)−4 mm |
| Head / width | 31 mm (1.22 in) | 35 mm (1.38 in)+4 mm |
| Body | — | 28 mm (1.10 in) |
| Thickness | 18 mm (0.71 in) | — |
| Weight | 125 g with battery | 197 g with battery+72 g |
| Battery | Built-in | 21700 |
| Max output | 1,600 lm | 4,720 lm |
| Throw | 160 m | — |
| Type | EDC | EDC |
| Price | $84.95 at fenixlighting.com, as of Nov 4, 2026 | $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced Listed 31.0 mm wide x 18.0 mm thick | batteryjunction.com sourced |
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E08R UE vs TC20 V3: how they differ
Size and weight
The ThruNite TC20 V3 is the shorter light: 125 mm (4.92 in) against 129 mm (5.08 in), a difference of 4 mm (3%). At its widest point the Fenix E08R UE is 4 mm slimmer (31 vs 35 mm). The Fenix E08R UE is 72 g lighter (125 g vs 197 g, with battery).
Brightness and throw
The ThruNite TC20 V3 is rated brighter: 4,720 lm maximum vs 1,600 lm for the Fenix E08R UE, 195% more.
Battery
The Fenix E08R UE runs on a built-in rechargeable battery; the ThruNite TC20 V3 runs on a removable 21700 battery. Only the ThruNite TC20 V3 lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Fenix E08R UE was $84.95 at fenixlighting.com and the ThruNite TC20 V3 $79.95 at batteryjunction.com, so the ThruNite TC20 V3 cost $5.00 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Fenix E08R UE if you want a slimmer profile (4 mm narrower), less weight (72 g lighter) and a built-in battery with no separate cell to buy. Choose the ThruNite TC20 V3 if you want a shorter light (4 mm shorter), more output (4,720 lm vs 1,600 lm) and a removable cell you can swap. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix E08R UE Check price ↗ ThruNite TC20 V3
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E08R UE vs TC20 V3 FAQ
Which is smaller, the Fenix E08R UE or the ThruNite TC20 V3?
The ThruNite TC20 V3 is the shorter light: 125 mm (4.92 in) against 129 mm (5.08 in), a difference of 4 mm (3%). At its widest point the Fenix E08R UE is 4 mm slimmer (31 vs 35 mm). The Fenix E08R UE is 72 g lighter (125 g vs 197 g, with battery).
Which is brighter, the Fenix E08R UE or the ThruNite TC20 V3?
The ThruNite TC20 V3 is rated brighter: 4,720 lm maximum vs 1,600 lm for the Fenix E08R UE, 195% more.
Which is cheaper, the Fenix E08R UE or the ThruNite TC20 V3?
When we checked on Nov 4, 2026, the Fenix E08R UE was $84.95 at fenixlighting.com and the ThruNite TC20 V3 $79.95 at batteryjunction.com, so the ThruNite TC20 V3 cost $5.00 less. Prices change often, so check the current price before you buy.
Do the Fenix E08R UE and ThruNite TC20 V3 use the same battery?
The Fenix E08R UE runs on a built-in rechargeable battery; the ThruNite TC20 V3 runs on a removable 21700 battery. Only the ThruNite TC20 V3 lets you swap in a charged spare.
Compare Fenix E08R UE with similar lights
Compare ThruNite TC20 V3 with similar lights
More
Sources
- Fenix E08R UE: specs from Fenix product page (manufacturer). Price $84.95 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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