Complete 24-volt battery watering kit with automatic shut-off valves. Designed for (3) 8V batteries with 2.5" cell spacing. Hand pump sold separately.
The Flow-Rite BG-U24V-6A Pro-Fill Universal Battery Watering System transforms battery maintenance from a dangerous, time-consuming chore into a simple 60-second task. Specifically engineered for 24-volt applications with three 8-volt batteries, this complete system replaces traditional vent caps with automatic shut-off valves interconnected by tubing. Fill all 12 battery cells from a single connection point without ever removing caps, exposing yourself to acid, or risking over or under-watering.
Each valve independently monitors its cell's water level and automatically closes when the precise electrolyte level is reached, ensuring perfect fills every time. The winged bayonet design allows tool-free installation with visual confirmation of proper seating, while flame arrestors prevent external sparks from igniting flammable battery gases. The pre-spaced manifolds with 2.5" spacing match standard 8-volt battery cell patterns, making this system ideal for marine trolling motors, RV house banks, industrial equipment, and solar/off-grid power systems using three 8V deep cycle batteries.
Fill all 12 cells in under a minute from single connection point - no cap removal required
Automatic shut-off valves independently close when each cell reaches precise water level
Never touch batteries or breathe toxic fumes - fill safely from remote location
Winged bayonet valves install by hand with visual indicators for proper seating
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: • 24-Volt systems • (3) Eight-volt batteries • 2.5" cell spacing (distance between cells) • 4 cells per 8V battery = 12 total cells Common 24V Configuration with 8V Batteries: This (3) 8V battery setup with 2.5" cell spacing is a common configuration for 24-volt systems. The 2.5" cell spacing is standard for most 8-volt batteries (except Trojan brand which uses 2.3" spacing). This configuration is popular in marine trolling motor applications, RV house banks, and industrial equipment. Why 8-Volt Batteries for 24V Systems: 8-volt batteries offer a good balance of power, runtime, and longevity for 24V applications. Using three 8V batteries to achieve 24 volts results in fewer individual batteries to maintain compared to four 6V batteries, while still providing excellent deep-cycle performance. Measuring Cell Spacing: Cell spacing is measured from the center of one cell to the center of the adjacent cell. 2.5" is the standard spacing for most 8-volt batteries. Measure your battery's cell spacing to confirm compatibility before ordering.
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 Batteries Are Fully Charged: Install only on fully charged batteries with proper water levels 2. Remove Existing Vent Caps: Unscrew and remove all original battery vent caps from all 12 cells 3. Install Pro-Fill Valves: Hand-thread each winged bayonet valve into battery cells - wings provide visual confirmation when fully seated 4. Install Manifolds: Connect 3 pre-spaced manifolds (one per battery) to the 4 valves on each 8V battery 5. Connect Tubing: Cut polypropylene tubing to appropriate lengths and connect manifolds together, terminating at coupler location 6. Install End Caps: Place red end caps on unused tubing connection points 7. Mount Coupler: Position quick-disconnect coupler at accessible location for filling 8. Connect Water Supply: Attach your chosen water supply (hand pump, gravity tank, or regulated hose supply sold separately) 9. Test System: Perform first fill to verify all valves shut off properly Installation Time: 20-35 minutes for experienced users, 35-50 minutes for first-time installation on 3-battery systems.
• 12 Pro-Fill valves (winged bayonet) • 3 Manifolds (2.5" spacing, one per 8V battery) • 7 feet polypropylene tubing (cut to fit) • 1 Quick-disconnect coupler with dust cover • 9 Red end caps • Complete installation instructions • 3-Year limited warranty Water Supply NOT Included: Choose from hand pump, gravity tank, or regulated hose supply (all sold separately) based on your application needs.
This BG-U24V-6A kit is for (3) 8-volt batteries with 2.5" cell spacing - a common configuration for 24V trolling motors and RV applications. Measure your battery's cell spacing before ordering to ensure proper fit.
Both configurations deliver 24V with 12 cells requiring water. The 3x8V setup (this kit) requires less space and fewer batteries to handle. The 4x6V setup offers lower per-battery replacement cost. Pro-Fill makes maintenance equally fast for both - under 60 seconds for all 12 cells.
Flow-Rite Controls Customer Service: Phone: (616) 583-1700 Email: [email protected] Hours: Monday-Friday 8:00 AM - 5:00 PM EST