Complete 48-volt battery watering system with 127-flex manifolds for eight 6V or four 12V batteries.
The Flow-Rite BG-U48V-7A is a universal Pro-Fill deep-cycle battery watering system specifically designed for golf cart applications. This versatile kit works with either eight 6-volt or four 12-volt batteries in 48-volt configurations, using 127-flex manifolds that adapt to various battery brands and cell spacings. The system features winged bayonet valves that provide fast and secure connections to battery cells with a simple push-and-quarter-turn installation—no tools required.
Each valve features built-in de-gas chambers that allow cells to expel naturally occurring hydrogen and oxygen gases, reducing ignition risk while still incorporating flame arrestors to prevent external sparks from entering cells. The automatic shut-off functionality ensures every cell reaches optimal water level then stops, eliminating guesswork and extending battery life by maintaining consistent water levels that prevent sulfation and plate damage. With a single quick coupler and 10 feet of tubing, this system provides flexible routing options for 48V battery banks. Once installed, simply connect your choice of Flow-Rite water supply to fill all batteries in minutes.
Push-and-quarter-turn bayonet installation—fast, secure connection without tools
127-flex manifolds work with eight 6V or four 12V batteries—adapts to multiple battery brands
Rotating connections route around terminals for easier installation—winged valves need no tools
Allows hydrogen/oxygen expulsion while maintaining flame arrestor protection—reduces ignition risk
BG-U48V-7A Kit Includes: • 24 Pro-Fill Automatic Shut-Off Valves • 8 Flex 127 Manifolds w/ 360° Swivel Tees • 10 Feet Clampless Polypropylene Tubing (Uncut) • 1 Quick Connect Water Fill Coupler w/ Dust Cover • 36 Red End Caps (Outlet Plugs) • Complete Installation Instructions • Warranty Documentation NOT Included (Purchase Separately): • Water Supply (Hand Pump, Regulated Hose, etc.) • Distilled or Deionized Water Note: A Flow-Rite approved water supply is required for operation.
System Installation Steps: 1. Remove Vent Caps: Take off all existing battery vent caps 2. Install Winged Valves: Push and quarter-turn valves into cells (no tools) 3. Attach Flex Manifolds: Connect 129-flex manifolds to valves, rotate swivel tees as needed 4. Route Tubing: Cut 10 ft tubing and route between batteries 5. Install Eagle Eye: Connect sensor valve to one cell, attach control module to battery strap, connect power wires to battery terminals (3/8" ring terminals) 6. Test Eagle Eye: Verify green LED illuminates when powered 7. Install Coupler & Test: Connect water supply, fill batteries, check all connections
Eagle Eye provides insurance against forgotten watering—the #1 cause of premature battery failure in golf carts.
Water Supply (Sold Separately): This kit does NOT include a water supply. You must purchase a Flow-Rite water supply such as: Hand Pump (portable, 24"), Regulated Hose Supply (connects to garden hose), Gravity Tank (overhead mounting), or Portable Watering Cart (fleet use). CRITICAL Water Quality Requirements: ALWAYS use distilled or deionized water. Minerals in tap water coat battery plates, fill microscopic pores, and drastically reduce contact area between plates and electrolyte. This causes permanent capacity loss and can shorten battery life by 40-50%. Approved Water: Distilled water, deionized water, RO water (if TDS under 10 ppm) DO NOT Use: Tap water, well water, bottled drinking water, softened water New Battery Break-In: For brand new batteries, complete at least 4 full charge/discharge cycles before adding any water. Initial electrolyte levels must stabilize during break-in period.