Overview
Yocan has been killing it with display-equipped batteries, and the Ari 2.0 brings that same formula to the pen form factor. The Kodo Pro proved you could get an OLED display for $15. The Ari 2.0 proves you can get one in a slim pen shape with size options too.
What We Tested
Our hands-on testing methodology
Unit Tested
Ari 2.0 Standard (Black)
Testing Period
10 days of use
Voltages Tested
1.8V to 4.2V range
Cartridges Tested
6 different carts
Battery Life
650mAh capacity
Features Tested
OLED, preheat, puff counter
The Ari 2.0 comes in three sizes: Mini (400mAh), Standard (650mAh), and Plus (900mAh), priced from $17 to $20. All three share the same features. You're just choosing battery capacity. That flexibility combined with the display and precision control makes this the most compelling pen-style 510 battery you can buy.
Design & Build Quality
The Ari 2.0 keeps the classic pen shape while squeezing in a small OLED display. It's a bit wider than basic pen batteries because of the screen, but still slim enough for comfortable pocket carry.
Three Size Options
| Model | Battery | Dimensions | Price |
|---|---|---|---|
| Ari 2.0 Mini | 400mAh | 14mm × 80mm | $16.99 |
| Ari 2.0 | 650mAh | 14mm × 94mm | $18.99 |
| Ari 2.0 Plus | 900mAh | 17mm × 97mm | $19.99 |
The Mini is ultra-compact for maximum portability. The Standard hits the sweet spot for most people. The Plus offers extended battery life with only slightly larger dimensions.
Button Layout
Yocan nailed the control scheme:
- Dedicated power button on the side for on/off and firing
- Separate +/- buttons below the display for voltage adjustment
This layout prevents accidental voltage changes during use. If you've ever clicked through modes you didn't want on a single-button battery, you know how frustrating that can be.
Color Options
All three sizes come in Black, White, Teal, Purple, and Pink. The finishes are clean with subtle branding.
The OLED Display
The display is the Ari 2.0's standout feature. Despite the slim pen form factor, Yocan fit in a readable OLED screen that shows:
- Current voltage with 0.1V precision
- Battery percentage (not just bars)
- Puff counter up to 9,999
Why This Matters
Most pen batteries communicate through LED colors that require memorization. Blue means 3.2V, green means 2.8V, red means... wait, which color was which again? The Ari 2.0 eliminates that guesswork entirely. See your exact voltage. Know your precise battery level. Track your usage over time.
The display activates during use and turns off to conserve power. It's bright enough to read in sunlight but not so bright it's distracting in low light.
Features
Precision Voltage Control (1.8V - 4.2V)
The Ari 2.0 offers the widest voltage range available, adjustable in 0.1V increments:
- 1.8V - 2.4V: Ultra-low for maximum flavor and delicate terpenes
- 2.5V - 3.2V: Balanced everyday performance
- 3.3V - 4.2V: Maximum vapor for thick concentrates
This granular control lets you dial in the exact setting for any cartridge. The 1.8V floor is particularly valuable for live resin and high-quality carts where gentle heating preserves flavor.
Smart Preheat Function
Double-click to activate a 10-second preheat cycle at 1.8V. This gentle warming:
- Thins viscous oils for better flow
- Prevents clogging in cold weather
- Prepares thick distillates for smooth draws
The 1.8V preheat is conservative enough to avoid burning terpenes while still improving oil consistency.
Safety Features
- 15-second cutoff: Prevents overheating during long draws
- 1-hour auto-shutoff: Conserves battery if you forget to turn it off
- Short circuit protection: Safeguards against faulty cartridges
- Low resistance protection: Only fires cartridges above 0.8Ω
USB-C Fast Charging
All three models use USB-C charging at 5V/1A:
- Mini (400mAh): About 1 hour full charge
- Standard (650mAh): About 1.2 hours full charge
- Plus (900mAh): About 1.2 hours full charge
Fast charging means minimal downtime even for the larger battery options.
Performance
Vapor Quality
Across 6 different cartridges, the Ari 2.0 delivered excellent performance. The precise voltage control allows meaningful optimization for different oil types.
At lower voltages (1.8-2.4V), vapor is smooth and flavorful with clear terpene expression. The mid-range (2.5-3.2V) provides the best all-around experience for most cartridges. Higher voltages (3.3-4.2V) produce dense clouds from thick distillates that struggle at lower settings.
The ability to adjust in 0.1V increments means you can find the exact sweet spot rather than settling for a preset that's "close enough."
Battery Life (Standard 650mAh Model)
- Light users (10-15 puffs daily): 2-3 days per charge
- Moderate users (25-35 puffs daily): 1-2 days per charge
- Heavy users (50+ puffs daily): Daily charging
The Plus model extends these estimates by about 40%, while the Mini reduces them proportionally.
Puff Counter
The puff counter tracks total draws up to 9,999 before resetting. This is useful for:
- Monitoring daily consumption
- Tracking cartridge usage
- Understanding your vaping habits
Ari 2.0 vs Kodo Pro
Both are excellent Yocan batteries with OLED displays and 0.1V precision. The choice comes down to form factor:
| Feature | Ari 2.0 | Kodo Pro |
|---|---|---|
| Form Factor | Pen | Box Mod |
| Size Options | 3 (Mini, Standard, Plus) | 1 |
| Battery Range | 400-900mAh | 400mAh |
| Cartridge Protection | Exposed | Recessed |
| Footprint | Slimmer, taller | Shorter, wider |
| Price | $17-20 | $15 |
Choose the Ari 2.0 if you prefer pen-style batteries or want size options. Choose the Kodo Pro if you want maximum compactness and better cartridge protection.
Who Should Buy This
The Ari 2.0 makes sense if you:
- Prefer pen-style batteries over box mods
- Want an OLED display without the box mod form factor
- Need size options to match your usage patterns
- Value precise voltage control for optimizing different cartridges
Look elsewhere if you:
- Want auto-draw activation (Ari 2.0 is button-only)
- Need maximum cartridge protection (box mods are better)
- Prefer absolute minimal size (basic pen batteries are slimmer)
The Bottom Line
The Yocan Ari 2.0 is the best pen-style 510 battery available. It brings OLED display technology and 0.1V precision to the classic pen form factor, with three size options that let you prioritize portability or battery life.
At $17-20, the value here is hard to beat. You're getting features that cost $40+ on competing products, wrapped in a slim package that feels familiar to pen battery users. If you've been waiting for a pen battery with modern features, this is it.
Looking for more Yocan products? Visit our Yocan brand page for the full lineup.
Related: Yocan Kodo Pro Review