Stop wrestling with individual vent caps and overfilling cells. The Flow-Rite Pro-Fill universal kit converts your four-battery 24V bank to a single-point watering system, filling every cell to the correct level automatically -- every time.
The Flow-Rite BG-U24V-4A is designed specifically for a 24V system built from four 6-volt batteries arranged with non-standard (irregular) cell spacing -- situations where a manifold-based kit simply won't reach or align correctly. Instead of a rigid manifold, this kit uses flexible interconnecting tubing routed directly between individual automatic shut-off valves, giving you the layout flexibility that fixed manifold kits can't provide.
Each automatic shut-off valve replaces an existing vent cap. When you connect your water source and trigger a fill, water flows into every cell simultaneously. When any cell reaches its proper electrolyte level, that cell's valve closes automatically. Filling stops battery by battery until all cells are at the correct level -- no guessing, no overfill, no acid spill.
Valves seal automatically when each cell reaches proper electrolyte level -- eliminates guessing and overfill.
Flexible tubing routing instead of a rigid manifold -- fits irregular battery bank layouts and tight compartments.
Tubing connects directly valve-to-valve, allowing custom routing around obstructions in any battery box configuration.
Connect once at the single fill point and water all four batteries simultaneously -- the entire bank fills in seconds.
The BG-U24V-4A is a complete kit. Key contents typically include:
No manifold is included or required. Tubing routes directly between valves for flexible placement.
Manually checking and topping 24 individual cells (six cells per 6V battery x four batteries) takes time and is prone to overfill errors. Overfilling dilutes electrolyte, corrodes terminals, and shortens battery life. The Pro-Fill system eliminates cell-by-cell work and ensures every cell hits the same correct level -- critical for maximizing the life of expensive golf cart, deep-cycle, and traction batteries.
Not compatible with sealed AGM, gel, or lithium batteries. Flooded lead-acid (wet cell) batteries only.
This kit is the "universal" non-standard spacing version (BG-U24V-4A). If your four 6V batteries sit in a standard, evenly spaced row, Flow-Rite offers manifold-based kits designed for that layout. Measure your battery compartment and battery terminal-to-terminal distances before ordering to ensure this no-manifold configuration is the right choice for your installation.
For the fastest fills, use a Flow-Rite Pro-Fill hand pump or a dedicated watering cart connected to this kit's single fill point. A standard garden hose with a pressure reducer also works for bench filling. Never connect directly to full line pressure without a regulator.