Flow-Rite BG-U48V-4A Pro-Fill Universal Battery Watering System for 6x 8V Batteries, Non-Standard Spacing

Flow-Rite BG-U48V-4A Pro-Fill Universal Battery Watering System for 6x 8V Batteries, Non-Standard Spacing

The Flow-Rite BG-U48V-4A Pro-Fill Universal Battery Watering System is made for battery setups that use six 8V batteries with non-standard spacing. This kit uses automatic shut-off valves that replace the existing vent caps and connect with tubing to help simplify battery watering.

Once installed, the system connects to a hand pump through a quick coupling valve, with water flowing into each cell until the proper level is reached. The product page also states that the kit uses winged valves, a 3-port swivel tee that rotates 360 degrees, and built-in safety features including a de-gas chamber and flame arrestors.

Key Features

• 360-Degree Swivel Tees: 24 three-port swivel fittings rotate freely to accommodate any cell spacing or battery layout without manifolds
• Universal Compatibility: Works with any non-standard spacing, irregular patterns, offset cells, or custom 48V battery configurations
• Automatic Shut-Off Valves: Each valve independently closes when its cell reaches proper water level - eliminates over or under-watering
• Built-In De-Gas Chamber: Allows cells to expel naturally occurring hydrogen and oxygen gases, reducing explosion and fire risk
• Integrated Flame Arrestors: Prevents external sparks or flames from igniting hydrogen gas produced during charging
• Winged Valve Design: Tool-free hand installation with wings providing visual confirmation of proper valve seating
• Single-Point Filling: Fill all 24 cells simultaneously from one remote connection point without removing any caps
• Quick-Disconnect Coupler: Snap-on/snap-off connection for water supply - no threading or tools required
• Under 60-Second Fill Time: Complete all 24 cells in under a minute versus 10-15 minutes manually filling each cell
• Acid-Resistant Tubing: Clampless polypropylene construction resists battery acid and withstands below-freezing temperatures
• Golf Cart Optimized: Specifically engineered for golf cart battery configurations and access constraints
• Made in USA: Manufactured by Flow-Rite Controls in Byron Center, Michigan
• 3-Year Limited Warranty: Manufacturer warranty covers defects in materials and workmanship

Ideal Uses

• Routine watering of compatible 48V battery systems
• Battery maintenance for six 8V battery setups
• Golf cart battery watering applications
• Replacing a matching Pro-Fill watering system

Ideal For

• Golf cart owners with compatible battery systems
• Battery service technicians
• Maintenance shops
• Fleet operators servicing deep-cycle batteries

Applications

• Flow-Rite BG-U48V-4A
• Pro-Fill universal battery watering system
• 6x 8V battery configurations
• Battery systems with non-standard spacing
• Golf cart battery watering applications

Product Specs

• Brand: Flow-Rite
• Part Number: BG-U48V-4A
• Product Type: Pro-Fill Universal Battery Watering System
• Battery Configuration: 6x 8V batteries
• Spacing: Non-standard spacing
• Valve Type: Automatic shut-off valves
• Valve Style: Winged valves
• Tee Style: 3-port swivel tee
• Installation Note: Hand pump sold separately

What's Included

• 24 Pro-Fill valves (winged)
• 24 Three-port swivel tee fittings
• 10 feet polypropylene tubing (cut to fit)
• 1 Quick-disconnect coupler
• 9 Red end caps
• Complete installation instructions
• 3-Year limited warranty

CRITICAL: New Battery Break-In Period

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.

Critical: Water Type Requirements

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.