FOUR 510 BATTERIES.
PICK YOURS
IN 30 SECONDS.
Small and compact, palm-sized, concealed or classic pen style. Get to know four Rokin favorites and find the features that fit your setup.
FOUR STYLES. FOUR WAYS TO FIT.
Compare size, controls, cartridge fit and price. All four models use a 510-thread connection and USB-C charging.
Pillar Digital
Compact body. Digital voltage display. Button activation.
Cartridge sold separately.
Mini Tank Pro
Palm-sized design. Adjustable voltage. Button or draw activation.
Cartridge sold separately.
Bar Pro
Concealed cartridge design. 650mAh battery. Button or draw activation.
Cartridge sold separately.
Thunder XL
Classic pen shape. 650mAh battery. 14mm-wide battery body.
Cartridge sold separately.
COMPARE THE DETAILS.
Use this quick chart to narrow down the style and features you want.
| FEATURE | PILLAR DIGITAL | MINI TANK PRO | BAR PRO | THUNDER XL |
|---|---|---|---|---|
| Capacity | 400mAh | 500mAh | 650mAh | 650mAh |
| Voltage range | 2.0–4.2V | 2.0–4.2V | 2.0–4.2V | 2.0–4.0V |
| Activation | Button | Button + draw | Button + draw | Button + draw |
| Display | Digital | Digital | Digital | Digital |
| Concealed | No | Partial / removable front | Yes | No |
| 510-thread cartridge fit | 510-thread cartridges. Confirm physical fit. | 12mm opening, fits most oil cartridges | Up to 3g, 69mm tall. Not compatible with Easy Fill. | 14mm-wide battery body. Designed for wider cartridge styles. |
| Charging | USB-C | USB-C | USB-C | USB-C |
| Price | $12.95 | $29.95 | $39.95 | $19.95 |
| Shop | Shop Pillar | Shop Mini Tank Pro | Shop Bar Pro | Shop Thunder XL |
Scroll horizontally to compare all four models.
Cartridge fit depends on dimensions and design, not threading alone. Thunder XL’s 14mm measurement describes the battery body width, not a confirmed maximum cartridge diameter. Check product details before ordering. Prices and availability may change.
WHAT CUSTOMERS ARE SAYING.
Real excerpts from independent retailers, with the original reviewer and source shown.
“The button is very clicky, feels solid!!”
Pillar Digital
“I like it very much especially the digital display on the pen”
Mini Tank Pro
“the digital display is super accurate, and the voltage control is perfect for dialling in live resins.”
Bar Pro
These excerpts are from third-party retailers, not purchases verified by Rokin. Ratings are for the quoted reviews, not overall product scores.
WILL YOUR 510-THREAD CARTRIDGE FIT?
Start with the cartridge’s threading and physical dimensions. Here is what Rokin publishes for the four featured models.
All four use a 510-thread connection. A matching thread does not guarantee that every cartridge will fit or operate correctly. Check cartridge dimensions and the manufacturer’s compatibility guidance.
BEFORE YOU PICK YOURS.
Will my 510-thread cartridge fit?
Not always. The connection may match while the cartridge is too wide or tall for a particular housing. Mini Tank Pro has a 12mm opening. Bar Pro supports cartridges up to 3g and 69mm tall. Thunder XL has a 14mm-wide battery body. Confirm dimensions before ordering.
How much is shipping?
Rokin offers free standard shipping on orders over $50 within the continental United States. The current shipping policy lists typical delivery estimates of 3–7 business days after processing.
What is the battery warranty?
Each of the four featured batteries includes a one-year battery warranty. Contact Rokin customer support for warranty questions or claims.
What is the return policy?
Rokin’s policy allows a full refund for fully sealed Rokin products returned within 30 days of the original purchase date. Opened products are not eligible under that policy.
Do the batteries include a cartridge?
No. The four featured battery kits are sold without a cartridge. Check the product page for package contents before ordering.
What does mAh mean?
mAh measures battery capacity. A higher number indicates more rated charge capacity, but actual time between charges depends on device settings and use.
AS SEEN IN.
Rokin has been featured by publications and media outlets across the industry.
FOUND YOUR FIT?
Compare the details, check your cartridge dimensions, and visit the Rokin product page for current options and availability.
Compare the lineup, check cartridge fit and visit Rokin for current product details.