Overview
The Cartisan Button VV 900 solves a specific problem: you're tired of charging your 510 battery every day. With a 900mAh capacity that dwarfs typical 400-650mAh batteries, this device promises all-day use without compromise.
What We Tested
Our hands-on testing methodology
Unit Tested
Button VV 900 (Black)
Testing Period
11 days of use
Voltages Tested
3.4V to 4.0V range
Cartridges Tested
6 different carts
Battery Life
900mAh capacity
Charging Tested
Both USB-C and Lightning
At $13.50, the Button VV 900 also introduces a clever feature: dual charging compatibility with both USB-C and Lightning cables. No more hunting for a specific charger - whatever's nearby works.
Design & Build Quality
The Button VV 900 trades compactness for capacity. It's noticeably larger than pen-style batteries, but that size houses the 900mAh battery that defines its appeal.
Build Quality
Users consistently praise the construction:
"Best battery I've used. Nice heavy feel."
"Well made. Sturdy feeling. Got a really thorough hit."
"Solid battery, works great."
At 227g, the Button VV 900 has genuine heft. This weight communicates quality - the device feels substantial rather than cheap. The soft-touch exterior provides comfortable grip and resists fingerprints.
Skirt Adapter
The included skirt adapter is a thoughtful detail. It creates visual continuity between the battery and cartridge, hiding the threading connection for a cleaner look. It's optional but appreciated.
Button Placement
The single button handles all operations:
- 5 clicks: Power on/off
- 3 clicks: Cycle voltage settings
- 2 clicks: Activate preheat
- Hold: Fire
One potential issue: the button cavity can accumulate debris over time, occasionally causing stuck buttons. Regular cleaning prevents this.
The Dual Charging Advantage
The standout feature is dual charging compatibility:
- USB-C: Standard for most Android devices and newer electronics
- Lightning: Standard for iPhones and some accessories
This means genuine charging flexibility. At home with your iPhone charger? Works. At a friend's house with only USB-C? Also works. The Button VV 900 doesn't care - it accepts both.
This feature alone sets it apart from nearly every competitor at this price point.
Voltage Settings
The Button VV 900 offers three power levels indicated by LED color:
| Color | Voltage | Best For |
|---|---|---|
| Green | 3.4V | Flavor-focused, most cartridges |
| Blue | 3.7V | Balanced vapor production |
| Red | 4.0V | Thick oils, maximum clouds |
The 3.4V-4.0V range is narrower than some competitors but covers the sweet spot for most cartridges. The 3.4V setting preserves flavor well, while 4.0V handles thick distillates effectively.
Performance
Battery Life
The 900mAh capacity delivers on the "all-day" promise. In practical use:
- Light users (10-20 puffs daily): 2-3 days between charges
- Moderate users (30-50 puffs daily): All-day use, charge overnight
- Heavy users (75+ puffs daily): Comfortable full-day use
One reviewer summarized the experience: "Fantastic! Charges quickly and lasts long."
The capacity comparison is stark:
| Battery | Capacity | Relative Life |
|---|---|---|
| Basic pen | 280-350mAh | ~40% |
| Standard battery | 400-500mAh | ~55% |
| Good battery | 650mAh | ~72% |
| Button VV 900 | 900mAh | 100% |
Vapor Quality
Across six different cartridges, the Button VV 900 delivered consistent, reliable vapor. The secure 510 connection prevents the wobbling or poor contact that plagues cheaper batteries.
At 3.4V, flavor comes through cleanly with smooth draws. Stepping up to 4.0V increases vapor density without harshness - the battery provides steady power output throughout its charge cycle.
Preheat Function
Double-click to activate preheat, useful for:
- Thick concentrates that need warming
- Cold weather use
- Preventing clogs in viscous oils
The preheat function runs at a gentle temperature to improve flow without burning.
What Users Say
The Button VV 900 enjoys strong user reviews (4.86/5 stars across verified purchases):
"Solid battery, works great. Fast shipping." - Aspen Bush
"Fantastic! Charges quickly and lasts long." - Josie Peck
"Best battery I've used. Nice heavy feel." - EA Sterosky
The only notable criticism: "does not last long" from one reviewer, which contradicts the majority experience. Battery life perceptions vary with usage patterns.
Comparison to Alternatives
vs. Standard 510 Batteries ($10-15)
Most batteries in this price range offer 280-500mAh capacity. The Button VV 900's 900mAh nearly doubles or triples the competition while adding dual charging capability.
vs. Yocan Kodo Pro ($15)
The Kodo Pro offers an OLED display and 0.1V precision but only 400mAh capacity. Choose the Button VV 900 for battery life, Kodo Pro for features and compact size.
vs. Larger Box Mods ($25+)
Higher-priced box mods may offer similar battery capacity with added features like displays and wider voltage ranges. The Button VV 900 provides the capacity without the complexity or cost.
Who Should Buy This
The Button VV 900 makes sense if you:
- Hate charging frequently and want genuine all-day use
- Have mixed cables (USB-C and Lightning) around your home
- Value reliability over compact size
- Want simplicity with just three voltage presets
Look elsewhere if you:
- Need ultra-compact size for maximum discretion
- Want precise voltage control (0.1V increments)
- Prefer displays over LED indicators
- Prioritize minimum weight
The Bottom Line
The Cartisan Button VV 900 does exactly what it promises: provide all-day battery life with the flexibility to charge however is convenient. The 900mAh capacity is genuinely liberating for users tired of daily charging, and dual USB-C/Lightning compatibility eliminates charger anxiety.
At $13.50, it's priced competitively with batteries offering half the capacity. The tradeoff is size - this isn't a pocket-disappearing device. But for users who prioritize power over portability, the Button VV 900 delivers outstanding value.
Looking for more Cartisan products? Visit our Cartisan brand page for the full lineup.