



100% Brass Tube is chrome plated to prevent oxidation and break down. Spring loaded for constant pressure and superior electrical connectivity. Why short cut to most important aspect to your build?





Solid Brass tube and finished in chrome plating

Solid Brass top floating center pin is also chrome plated

Top pin is spring loaded to provide constant pressure and maintain perfect connection. It self-adjusts to the minor differences in battery lengths and assures a solid connection

Electrical isolation is accomplished via PEEK insulator on top\

Spring carries no load

Positive center pin is also manually adjustable to set pressure/clearance of the spring depending on batteries.

Ground lug included and accomplished via installation into top cap. Solder negative/ground connection directly to the lug.

Positive center pin bored to accept your wire for direct soldering Dimensions: Assembled tube length is 77.3mm

Center Pin and Ground lug add 1.5mm to overall length



Center pin needs room to float up during battery installation - 1mm-3mm

Major OD at battery end is 21.6mm at the cap ends

Major OD at Top Cap is 22.9mm

ID is 19mm



Here's the ultimate in battery tubes for your mods. The Varitube 18650 Spring loaded tube. Often you purchase or make a nice wood shell and then your forced to make due without a quality solution for your battery. This tube solves your problems!