Uni-ball POWER TANK RT Ballpoint Refill

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Uni-ball POWER TANK RT Ballpoint Refill 111 mm pressurized refill
Uni-ball POWER TANK RT Ballpoint Refill, a 111 mm pressurized ballpoint refill for Uni-ball POWER TANK RT retractable pens.

Not sure this is the right refill? Use the Pen Refill Finder to compare sizes and compatibility.

Buy Uni-ball POWER TANK RT Ballpoint Refills

When buying a Uni-ball POWER TANK RT Ballpoint Refill, make sure the refill is listed for the Uni-ball POWER TANK RT retractable ballpoint pen. This refill is useful to compare with other 111 mm refills, but it is a pressurized ballpoint refill, not a gel refill, rollerball refill, or Parker-style G2 refill.

Quick Specs

SpecificationDetails
ManufacturerUni-ball
Common Search NamesUni-ball POWER TANK RT refill, Uni Power Tank RT refill, Power Tank RT ballpoint refill
Refill CategoryBallpoint refill
Refill ShapeFull-size retractable ballpoint refill
Product FamilyUni-ball POWER TANK RT refill family
Ink TypePressurized ballpoint ink / Uni Super Ink
LengthApproximately 111 mm (4.37 in)
Body MaterialPlastic tube-style refill
PressurizedYes
Retractable CompatibleYes, in compatible Uni-ball POWER TANK RT pens
Common Tip Size0.7 mm, 1.0 mm
Common Ink ColorsBlack, blue depending on pack
Common Compatible PensUni-ball POWER TANK RT retractable ballpoint pens

Uni-ball POWER TANK RT Ballpoint Refill Overview

The Uni-ball POWER TANK RT Ballpoint Refill is a 111 mm retractable ballpoint refill designed for Uni-ball POWER TANK RT pens. It is best known as a pressurized ballpoint refill, making it different from many other 111 mm refills that use gel, rollerball, or fineliner ink.

This refill is useful to include in the 111 mm refill category because it is close in length to popular full-size gel refills such as the Pilot G2 Refill, Pentel EnerGel Refill, and Uniball 207 Gel Refill. However, it belongs in a different writing system. The Uni-ball POWER TANK RT Ballpoint Refill is a pressurized ballpoint refill, not a gel refill.

That distinction matters for compatibility. A refill can be the same general length as Pilot G2, Pentel EnerGel, TUL Gel, Zebra Sarasa, Uniball 207, or Schmidt 888-style refills and still fail to fit properly if the tip shape, shoulder, diameter, rear plug, or spring position is different.

Why Choose the Uni-ball POWER TANK RT Ballpoint Refill?

Choose the Uni-ball POWER TANK RT Ballpoint Refill if you have a Uni-ball POWER TANK RT retractable ballpoint pen and want the correct refill for that pen family.

The main advantage of this refill is its pressurized ballpoint design. Pressurized ballpoint refills are made for more reliable writing in challenging conditions, including writing at different angles, writing on certain difficult surfaces, and writing when a standard ink system may struggle.

The Uni-ball POWER TANK RT Ballpoint Refill is also a useful comparison refill for people identifying a mystery 111 mm refill. If your refill is around 111 mm long but uses ballpoint ink rather than gel or rollerball ink, the POWER TANK RT refill belongs in the comparison set.

Writing Characteristics

The Uni-ball POWER TANK RT Ballpoint Refill uses pressurized ballpoint ink. It is designed for dependable writing performance rather than the wetter, smoother feel of a gel or rollerball refill.

The common 1.0 mm bold point gives it a darker, more substantial ballpoint line than many fine or medium ballpoint refills. It is a practical option for notes, forms, labels, outdoor use, jobsite writing, and everyday writing where reliability matters.

Because this is a ballpoint refill, it will not feel the same as a gel refill such as Pilot G2, Pentel EnerGel, TUL Gel, Zebra Sarasa, or Uniball 207. It should feel more controlled and less wet, with the added benefit of Uni-ball’s pressurized POWER TANK ink system.

Uni-ball 111 mm Refill Family Notes

Uni-ball has several refills in the 111 mm neighborhood, but they do not all belong to the same writing system. The Uni-ball POWER TANK RT is a pressurized ballpoint refill, while Uniball 207, Uniball 207+ PLUS / 307, and Uniball Zento Liquid Gel refills belong on the gel side of the comparison.

The Uniball 207 Gel Refill is the most important same-brand gel comparison because it is another full-size Uni-ball refill in the 111 mm range. It is useful for length comparison, but it is not the same refill as the Uni-ball POWER TANK RT Ballpoint Refill.

The Uniball 207+ PLUS / 307 refill is another related Uni-ball gel refill family. It is a strong comparison for Uni-ball gel pen users, but it should still be separated from POWER TANK because 207+ PLUS and 307 refills use gel ink, not pressurized ballpoint ink.

The Uniball Zento Liquid Gel refill also belongs on the gel side of the Uni-ball refill discussion. It may be useful as a same-brand gel comparison, especially in a broader 111 mm refill guide, but it should not be presented as a direct substitute for the POWER TANK RT ballpoint refill unless fit is confirmed.

111 mm Ballpoint Refill Compatibility Notes

The Uni-ball POWER TANK RT Ballpoint Refill sits in the 111 mm refill range, which makes it easy to compare with many full-size gel and rollerball refills. However, it should be treated as a 111 mm retractable ballpoint refill, not as a direct gel refill substitute.

The closest length comparisons include Pilot G2, Pentel EnerGel, TUL Gel, Zebra Sarasa / JF, Sharpie S-Gel, Uniball 207, Uniball 207+ PLUS / 307, Uniball Zento Liquid Gel, and standard 111 mm rollerball refills such as Schmidt 888 and Schmidt 5888. Those refills may share a similar length, but they do not all share the same ink system or refill shape.

For compatibility, compare the full refill profile:

  • Overall length
  • Tip shape
  • Tip diameter
  • Shoulder shape
  • Barrel diameter
  • Rear plug shape
  • Spring position
  • Whether the pen is capped or retractable

Length is a useful starting point, but it is not enough by itself to confirm fit.

Compatible Pens

The Uni-ball POWER TANK RT Ballpoint Refill is designed for Uni-ball POWER TANK RT retractable ballpoint pens. It should not be treated as a universal refill without checking the original refill shape.

Common compatible pen categories include:

  • Uni-ball POWER TANK RT retractable ballpoint pens
  • Select Uni-ball POWER TANK retractable pens listing RT refill compatibility
  • Select pens specifically listing POWER TANK RT refill compatibility
  • Select 111 mm retractable ballpoint pens only when fit is confirmed

Do not assume this refill fits every pen that accepts a 111 mm refill. A pen may have enough internal length but still fail to work if the tip, shoulder, spring position, or rear-end shape does not match.

Compatible Brands

The Uni-ball POWER TANK RT Ballpoint Refill is primarily a Uni-ball refill, but it is useful to compare with other 111 mm retractable refill formats.

Brands and pen categories to compare include:

  • Uni-ball
  • Uni-ball POWER TANK RT pens
  • Uni-ball retractable ballpoint pens
  • 111 mm retractable ballpoint refills
  • Uni-ball 111 mm gel refills, comparison only
  • Pilot G2-style retractable gel refills, comparison only
  • Pentel EnerGel-style retractable gel refills, comparison only
  • Standard 111 mm rollerball refills, comparison only

Compatibility outside POWER TANK RT pens should be treated cautiously. Similar length does not guarantee interchangeability.

Alternative Refills

The safest replacement for a Uni-ball POWER TANK RT Ballpoint Refill is another POWER TANK RT refill in the correct tip size and ink color. Other 111 mm refills may be useful for comparison, but they should not be treated as direct substitutes unless fit is confirmed.

Popular alternatives and comparison refills include:

  • Uni-ball POWER TANK RT Ballpoint Refill, black 1.0 mm
  • Uni-ball POWER TANK RT Ballpoint Refill, blue 1.0 mm
  • Uni-ball Jetstream RT Refill, 111 mm ballpoint comparison
  • Uniball 207 Gel Refill, 111 mm gel comparison only
  • Uniball 207+ PLUS / 307 Gel Refill, 111 mm gel comparison only
  • Uniball Zento Liquid Gel Refill, 111 mm gel comparison only when size and fit are confirmed
  • Pilot G2 Refill, 111 mm gel comparison only
  • Pentel EnerGel Refill, 111 mm gel comparison only
  • TUL Gel Refill, 111 mm gel comparison only
  • Zebra Sarasa / JF Gel Refill, 111 mm gel comparison only
  • Sharpie S-Gel Refill, 111 mm gel comparison only
  • Schmidt 888 Rollerball Refill, standard 111 mm rollerball comparison
  • Schmidt 5888 Rollerball Refill, standard 111 mm metal rollerball comparison
  • Schmidt 6040 Fineliner Refill, standard 111 mm fineliner comparison

The closest functional replacement is another Uni-ball POWER TANK RT Ballpoint Refill. Other 111 mm gel, rollerball, and fineliner refills may be close in length, but they belong to different ink and refill-shape families.

The Uniball 207, 207+ PLUS / 307, and Zento Liquid Gel refills are useful Uni-ball comparisons because they sit on the retractable gel side of the 111 mm refill category. The Uni-ball POWER TANK RT Ballpoint Refill is different because it uses a pressurized ballpoint ink system. These refills may be close in length, but they should not be treated as direct substitutes unless the full refill shape and pen fit are confirmed.

Before choosing a substitute, use the Pen Refill Size Guide to compare refill length, diameter, tip style, shoulder shape, spring position, and rear-end design.

Refill Family

The Uni-ball POWER TANK RT Ballpoint Refill belongs to Uni-ball’s POWER TANK retractable ballpoint refill family. It is part of the broader 111 mm refill discussion, but it should be separated from 111 mm gel and rollerball refills.

This refill family is defined by pressurized ballpoint writing performance. That makes it different from gel refills such as Pilot G2, Pentel EnerGel, TUL Gel, Zebra Sarasa, Sharpie S-Gel, Uniball 207, Uniball 207+ PLUS / 307, and Uniball Zento Liquid Gel.

It is also different from standard 111 mm rollerball refills such as Schmidt 888 and Schmidt 5888. Those refills may be close by length, but they are usually designed for capped rollerball pens rather than retractable ballpoint pens.

How to Identify a Uni-ball POWER TANK RT Ballpoint Refill

The Uni-ball POWER TANK RT Ballpoint Refill is a 111 mm pressurized ballpoint refill for Uni-ball POWER TANK RT retractable pens. It is best identified by the pen model, refill shape, and ballpoint ink system.

Key identification points:

  • Approximately 111 mm long
  • Designed for Uni-ball POWER TANK RT retractable ballpoint pens
  • Pressurized ballpoint refill
  • Commonly 1.0 mm bold point
  • Commonly available in black and blue
  • Plastic tube-style refill body
  • Uses Uni-ball POWER TANK ink system
  • Similar in length to Pilot G2-style gel refills
  • Similar in length to Pentel EnerGel refills
  • Similar in length to TUL Gel refills
  • Similar in length to Uniball 207 gel refills
  • Similar in length to Uniball 207+ PLUS / 307 gel refills
  • Same brand but different ink system from Uniball Zento Liquid Gel refills
  • Not a gel refill
  • Not a rollerball refill
  • Not a Parker-style G2 refill
  • Not a D1 mini refill
  • Not a capped standard rollerball refill
  • Not the same as Uniball 207, 207+ PLUS / 307, or Zento Liquid Gel refills

Do not identify this refill by length alone. Many gel, rollerball, fineliner, and ballpoint refills sit near the 111 mm range, but they are not all interchangeable.

Not sure if this is your refill? Check the Pen Refill Finder to compare size, shape, and compatibility before ordering.

Frequently Asked Questions

What is the Uni-ball POWER TANK RT Ballpoint Refill?

The Uni-ball POWER TANK RT Ballpoint Refill is a pressurized ballpoint refill designed for Uni-ball POWER TANK RT retractable pens. It is commonly found in the 111 mm refill range.

What size is the Uni-ball POWER TANK RT Ballpoint Refill?

The Uni-ball POWER TANK RT Ballpoint Refill is approximately 111 mm long, or about 4.37 inches.

What pens use the Uni-ball POWER TANK RT Ballpoint Refill?

The Uni-ball POWER TANK RT Ballpoint Refill is made for Uni-ball POWER TANK RT retractable ballpoint pens and other pens that specifically list POWER TANK RT refill compatibility.

Is the Uni-ball POWER TANK RT Ballpoint Refill pressurized?

Yes. The Uni-ball POWER TANK RT Ballpoint Refill uses a pressurized ballpoint ink system designed for more reliable writing performance.

Is the Uni-ball POWER TANK RT Ballpoint Refill the same as a Pilot G2 refill?

No. The Uni-ball POWER TANK RT Ballpoint Refill and Pilot G2 Refill are different refill families. They are close in length, but Pilot G2 is a gel refill while POWER TANK RT is a pressurized ballpoint refill.

Is the Uni-ball POWER TANK RT Ballpoint Refill the same as a Pentel EnerGel refill?

No. The Uni-ball POWER TANK RT Ballpoint Refill is not the same as a Pentel EnerGel Refill. Both are close in length, but EnerGel is a gel refill and POWER TANK RT is a pressurized ballpoint refill.

Is the Uni-ball POWER TANK RT Ballpoint Refill the same as a Uniball 207 refill?

No. The Uni-ball POWER TANK RT Ballpoint Refill and Uniball 207 Gel Refill are different refill families. They are close in length and both are Uni-ball refills, but POWER TANK RT is a pressurized ballpoint refill while the Uniball 207 is a gel refill.

Is the Uni-ball POWER TANK RT Ballpoint Refill the same as a Uniball 207+ PLUS or 307 refill?

No. The Uni-ball POWER TANK RT Ballpoint Refill is not the same as the Uniball 207+ PLUS / 307 refill. The 207+ PLUS / 307 refill belongs to Uni-ball’s gel refill family, while POWER TANK RT belongs to the pressurized ballpoint family.

Is the Uni-ball POWER TANK RT Ballpoint Refill the same as a Uniball Zento Liquid Gel refill?

No. The Uni-ball POWER TANK RT Ballpoint Refill is not the same as a Uniball Zento Liquid Gel refill. Zento is part of Uni-ball’s gel refill discussion, while POWER TANK RT is a pressurized ballpoint refill.

Can I use the Uni-ball POWER TANK RT Ballpoint Refill as a gel refill substitute?

Usually no. It may be close in length to many 111 mm gel refills, but it uses ballpoint ink and has its own refill shape. It should only be used as a substitute if fit is confirmed.

Is the Uni-ball POWER TANK RT Ballpoint Refill a Parker-style G2 refill?

No. The Uni-ball POWER TANK RT Ballpoint Refill is not a Parker-style G2 refill. Parker-style G2 refills are shorter, around 98 mm, and have a different shape.

What is the best alternative to the Uni-ball POWER TANK RT Ballpoint Refill?

The best replacement is another Uni-ball POWER TANK RT Ballpoint Refill in the correct tip size and ink color. Other 111 mm refills can be useful comparisons, but they should not be treated as direct substitutes unless fit is confirmed.

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