Overview
Tired of charging your 510 battery every day? The Cartisan Button VV 900 is built for that frustration. Its 900mAh capacity dwarfs the typical 400-650mAh you'll find elsewhere, and it actually delivers on the all-day promise.
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, it also has a clever trick: dual charging 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 bigger than pen-style batteries, but that size is what makes the 900mAh possible.
Build Quality
Users keep coming back to 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 real heft. It feels substantial, not cheap. The soft-touch exterior grips well and doesn't show fingerprints.
Skirt Adapter
The included skirt adapter is a nice touch. It hides the threading connection between battery and cartridge for a cleaner look. Optional, but it's there if you want it.
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 thing to watch: the button cavity can collect debris over time, which sometimes causes the button to stick. Clean it out occasionally and you'll be fine.
The Dual Charging Advantage
The standout feature is dual charging:
- USB-C: Standard for most Android devices and newer electronics
- Lightning: Standard for iPhones and some accessories
At home with your iPhone charger? Works. At a friend's house with only USB-C? Also works. The Button VV 900 accepts both, which sets it apart from almost every competitor at this price.
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 hits the sweet spot for most cartridges. The 3.4V setting keeps flavor clean. The 4.0V setting handles thick distillates without issue.
Performance
Battery Life
The 900mAh capacity delivers on the "all-day" claim. In real 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): Full-day use, no problem
One reviewer put it simply: "Fantastic! Charges quickly and lasts long."
Here's how it stacks up:
| 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 6 different cartridges, the Button VV 900 delivered consistent vapor. The secure 510 connection prevents the wobbling or poor contact you get with cheaper batteries.
At 3.4V, flavor comes through clean with smooth draws. At 4.0V, vapor density increases without harshness. Power output stays steady throughout the 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 runs at a gentle temperature, warming oil without burning it.
What Users Say
The Button VV 900 has strong 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
One reviewer said it "does not last long," which doesn't match what most people report. Battery life perception depends a lot on how much you use it.
Comparison to Alternatives
vs. Standard 510 Batteries ($10-15)
Most batteries in this price range offer 280-500mAh. The Button VV 900's 900mAh doubles or triples that, and adds dual charging.
vs. Yocan Kodo Pro ($15)
The Kodo Pro has an OLED display and 0.1V precision, but only 400mAh. Pick the Button VV 900 for battery life, Kodo Pro for features and compact size.
vs. Larger Box Mods ($25+)
Box mods in this range may offer similar battery capacity with displays and wider voltage ranges. The Button VV 900 gives you the capacity without the complexity or cost.
Who Should Buy This
The Button VV 900 makes sense if you:
- Hate charging frequently and want all-day use
- Have mixed cables (USB-C and Lightning) lying around
- Value reliability over compact size
- Want simplicity with just 3 voltage presets
Look elsewhere if you:
- Need ultra-compact size for discretion
- Want precise voltage control (0.1V increments)
- Prefer displays over LED indicators
- Care about weight (this one's 227g)
The Bottom Line
The Cartisan Button VV 900 does what it promises: all-day battery life with the flexibility to charge any way you want. The 900mAh capacity is freeing if you're tired of daily charging, and dual USB-C/Lightning means you're never stuck without a compatible cable.
At $13.50, you're paying the same as batteries with half the capacity. The tradeoff is size. This won't disappear into your pocket. But if you prioritize power over portability, the Button VV 900 is a strong buy.
Looking for more Cartisan products? Visit our Cartisan brand page for the full lineup.