Millennium EVO Battery Watering System

Millennium EVO Battery Watering System

The Millennium Evo Battery Watering System makes the difficult task of watering industrial batteries easy. It consists of automatic shut-off valves interconnected with tubing that replace the existing vent caps. A quick coupling allows the system to be connected to a water supply. Once connected, water flows into each cell until it reaches the correct level. A flow indicator built into the water supply tells the operator when filling has been completed. The entire process takes just 30 seconds per battery.

Cost Savings

Contact Exponential Power to receive your custom payback analysis showing your labor cost savings. After installing your Millennium system, you will realize other cost benefits including extended battery life; increased performance; and cleaner floors, equipment and battery tops.


Fill batteries without having to remove the vent covers. Avoid battery acid burns, ruined clothing, and noxious fumes. Add optional flame arrestors to prevent ignition of flammable battery cell gasses.

Extend Battery Life & Performance

A properly-watered battery lasts longer and performs better. Overfilling a battery results in loss of acid, whereas charging with low electrolyte levels will result in permanent damage to the lead plates. Both will result in loss of capacity and life expectancy.

Time-Saving Convenience

Snap on/snap off water connections and fast filling turn the often ignored task of watering batteries into a quick, simple task – allowing you to fill each battery in 30 seconds or less!

Made in USA


Millennium Evo™ is the most innovative, advanced, versatile, and user-friendly system on the market today. Advanced materials and design produce the most robust and the best performing valve. At a glance, you can see many of the superior features listed below. What’s more impressive is the structure inside the valve that allows the Millennium Evo valve of working independently of water pressure*, allowing you to use a variety of water supply options.

Optical Level Indicator

Check your electrolyte levels without having to remove your watering system. The built-in indicator is white when the cell is low on water and black when full. Since it operates independently from the valve, it is the only built-in indicator on the market that can truly be used to accurately verify cell electrolyte levels (not available on all valve configurations).

Color Coded Flip-Top Cell Access

Check specific gravity levels with ease. Flip-Top access port gives direct cell access without the need for drilling cell covers or removing the watering system. New color coding allows for easy verification of valve length after the valves have been installed.

Clampless Polypropylene Tubing

Patented clampless tubing installs in half the time of tubing that requires clamps and holds twice as well. Unlike clear PVC tubing, our patented tubing will not break down and cause system failure.

3-Port Swivel Tee

Patented Three-Port Swivel Tee rotates a full 360 degrees, allowing for a more versatile installation. Eliminates kinked tubing, the need for additional plumbing pieces, and allows you to place the feed tube wherever it’s most convenient, not just at the end.

Low Profile

The patented low profile design keeps all components of the watering system out of harm’s way by making sure that they all sit below the intercell connectors.

Wide Pressure Range

Millennium’s patented technology eliminates the need to buy expensive water supplies to generate high pressure and flow. Our variable pressure system will work from 3 to 35 PSI, with minimum flow rate of 2 GPM (measured through the purger). Flow-Rite offers the most complete range of water supplies including regulated hose supplies, AC/DC powered carts, portable units, gravity tanks, deionizers, and hand pumps.

Millennium Evo single point battery watering system


Data Sheet

Water Supplies

Regulated Hose Supply Brochure

Regulated Hose Supply Manual

Millennium Evo battery watering device

snap on snap off battery watering connections

Millennium EVO valve features video on YouTube

View video on Millennium EVO Valve Features

Millennium EVO features with call outs

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