Universal 12-volt battery watering kit for non-standard spacing. Custom-fit system with 360-degree swivel tees. No manifolds required.
The Flow-Rite BG-U12V-4A-WS Universal Pro-Fill Battery Watering System is the ultimate solution for 12-volt applications with non-standard battery configurations. Unlike fixed-spacing kits that use rigid manifolds, this universal system features 6 individual 3-port swivel tees that rotate 360 degrees, allowing you to create custom tubing paths that perfectly match any battery cell spacing or layout. This flexibility makes it ideal for single 12-volt batteries with irregular spacing, offset cells, or tight installations where standard manifolds won't fit.
Each valve features automatic shut-off technology that independently monitors water level and closes when the precise electrolyte level is reached. The winged bayonet design provides tool-free installation with visual confirmation of proper seating, while integrated flame arrestors and de-gas chambers ensure safe operation. The complete kit includes a hand pump, making this a plug-and-play solution requiring no additional water supply equipment - perfect for marine deep cycle batteries, RV house batteries, solar power banks, or any application with a single 12-volt battery in non-standard configurations.
6 rotating swivel fittings adapt to any cell spacing or battery layout - no manifolds needed
Works with any non-standard spacing, offset cells, or irregular 12V battery configurations
Built-in chamber expels hydrogen and oxygen gases naturally, reducing ignition risk
Includes hand pump for immediate use - no additional water supply equipment needed
If installing on brand new batteries, you MUST wait at least 4 complete charge cycles before adding any water through this system. New batteries require an initial break-in period where the plates activate and electrolyte levels stabilize. Installing and using the Pro-Fill system immediately on new batteries can result in improper water levels during this critical formation period, potentially damaging the batteries and voiding warranties. After 4 charge cycles, the batteries are ready for normal Pro-Fill operation.
This Kit Is Designed For: • Single 12-Volt batteries • 6 cells per 12V battery • Non-standard cell spacing (any spacing) • Batteries with irregular or offset cell patterns • Tight installations where manifolds won't fit • Custom battery configurations Common 12V Applications: • Marine deep cycle batteries (trolling motors, house banks) • RV house batteries and auxiliary power • Solar power storage banks • Off-grid and backup power systems • Camper and trailer house batteries • Recreational vehicles and boats When to Choose Universal: If your battery has non-standard spacing, offset cells, irregular patterns, or if standard manifold kits don't fit your battery layout. The 360-degree swivel tees allow custom routing around obstacles and adapt to any configuration. Measurement: Cell spacing is the distance from center of one cell to center of adjacent cell. If your spacing varies or doesn't match standard sizes, this universal kit is your solution.
ALWAYS use distilled or deionized water when refilling your batteries. Tap water contains minerals (calcium, magnesium, iron) that will coat the battery plates and fill pores, preventing proper contact with the electrolyte solution. This mineral buildup causes: • Reduced battery capacity and runtime • Shortened battery lifespan • Increased internal resistance and heat • Permanent damage not covered by warranty Distilled water costs approximately $1-2 per gallon at grocery stores and is essential for maximizing your battery investment. Using tap water will void most battery warranties.
Installation Steps (No Tools Required): 1. Ensure Battery Is Fully Charged: Install only on fully charged battery with proper water levels 2. Remove Existing Vent Caps: Unscrew and remove all original battery vent caps from all 6 cells 3. Install Pro-Fill Valves: Hand-thread each winged bayonet valve into battery cells - wings provide visual confirmation when fully seated 4. Attach Swivel Tees: Connect 3-port swivel tee to each valve - tees rotate 360 degrees for flexible positioning 5. Plan Tubing Routes: Determine optimal tubing paths considering battery layout and obstacles 6. Cut and Connect Tubing: Cut polypropylene tubing to appropriate lengths and connect swivel tees together using tubing 7. Install End Caps: Place red end caps on unused swivel tee ports 8. Mount Coupler: Position quick-disconnect coupler at accessible location for filling 9. Test System: Connect hand pump and perform first fill to verify all valves shut off properly Installation Time: 20-40 minutes depending on battery layout complexity. Swivel tees add flexibility but require custom routing planning.
• 6 Pro-Fill valves (winged bayonet) • 6 Three-port swivel tee fittings • 4 feet polypropylene tubing (cut to fit) • 1 Quick-disconnect coupler • 1 Hand pump (BA-MS-634) • 9 Red end caps • Complete installation instructions • 3-Year limited warranty Universal Design: No manifolds included - the 360-degree swivel tees provide maximum flexibility for any battery spacing or layout. Cut tubing to exact lengths needed for your specific 12V configuration.
12V systems are the most common battery voltage for marine, RV, and off-grid applications. This universal kit works with any 12V deep cycle battery, regardless of cell spacing or layout.
The 360-degree swivel tees in the universal kit provide unmatched installation flexibility for 12V batteries. Each tee rotates independently, allowing custom tubing routes that adapt to any battery layout, obstacle, or space constraint found in marine, RV, and off-grid installations.
Flow-Rite Controls Customer Service: Phone: (616) 583-1700 Email: [email protected] Hours: Monday-Friday 8:00 AM - 5:00 PM EST