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Battery Watering

the hydrodynamic battery watering system

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Implementation of the Hydrodynamic Principle

Originally Engineered over 25 years ago, the first AquaPro fill caps revolutionized the market with the usage of hydrodynamic force to seal the system and maximize fill speed.  Today we're on our forth generation through continued development and optimization.   The current AquaPro system builds on its previous innovative legacy and expands durability and long term performance.


All-In-One Coupler™

Innovation continues with our industry leading All-In-One coupler.  Built out of high-impact polycarbonate material.  Our advanced coupler has integrated flow indicators, strainer, optional freezer package features, pressure relief, dust cap and more.  Available in 6, 8 or 10mm with single or double exit tube ports. This awesome coupler filters up to 0.15mm particles and is designed to be opened and clean as is necessary. 


Global Flexibility

Regardless of the origin of your battery, we have you covered.  From 3/4"  Push-in style fill caps to M 30 Screw-in style fill caps and everything in between our wide variety of fill caps mounting options ensures we've got your fleet of batteries covered, no matter what part of the world your batteries come from.  Further we offer a series of different float lengths to guarantee we have the perfect match for your battery's well depth.

Industrial 2v Traction Cells (23mm)

Monobloc Deep Cycle Batteries (18mm)



Faster refill times, leading innovation, manufacturing excellence.

Made in Germany, our ISO 9001:2015 production plant offers precision in our vertically integrated manufacturing process.  From design to production, every aspect of built cycle is completed in-house.  With 3D CAD modeling, internal mold fabrication to our modern injection molding machines we take pride in our ability to be a design leading global brand in the battery watering industry.  

AquaPro In Numbers


Fill Caps Made Annually


Years In Business


Configuration Options


Number of  installations per year 

Kit Selector
Industrial Storage

AquaPro Kit Selector

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US & Canada: (440) 665-2600

P.O. Box 39562

Cleveland, OH 44139

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