A straightforward, cost-effective way to water your flooded lead-acid batteries. The BA-MS-320-20 connects directly to any standard water supply and uses a built-in pressure regulator to deliver controlled, accurate fill levels -- no pump, no guesswork, no overfilling. Ideal for RV house battery banks, golf carts, and off-grid setups where a pump-driven system is more than you need.
Flow-Rite's regulated hose supply systems are designed for flooded lead-acid battery banks that use a single-point watering manifold. The BA-MS-320-20 pairs with Flow-Rite's battery watering systems to fill every cell to the correct level simultaneously -- stopping automatically when each cell reaches its preset fill point.
The 20-foot hose gives you enough reach to work around most RV battery compartments, golf cart bays, or floor-mounted battery banks without repositioning your water source. Because the system is pressure-regulated rather than pump-driven, the hardware cost is lower and there are fewer moving parts to maintain.
Reduces standard supply pressure to the safe, low range required by Flow-Rite watering valves -- no separate regulator needed.
Uses standard tap water pressure instead of a pump unit, reducing system cost and eliminating a potential failure point.
Generous hose length handles most RV and golf cart battery compartments without extension hoses or repositioning a water jug.
Regulated flow delivers water quickly and shuts off automatically at the correct level -- no slow drip, no manual checking per cell.
The BA-MS-320-20 hose supply attaches to the quick-connect port on a Flow-Rite battery watering manifold. Water flows through the regulated line into each individual cell valve, which snaps shut the instant the electrolyte reaches the correct level. All cells fill simultaneously -- a full bank of 6 to 24 cells typically completes in under 60 seconds once connected.
Flow-Rite offers both pump-operated fill systems (which draw from a standalone water reservoir) and regulated hose supply systems like the BA-MS-320-20. The hose supply is the right choice when you have reliable access to a tap or hose bib at fill time and want to avoid the added cost of a pump unit. If you water batteries in a location without a water hookup, the pump-reservoir system is the better fit.
Use only distilled or deionized water when filling flooded lead-acid batteries. Tap water minerals and chlorine contaminate electrolyte and accelerate plate corrosion. The BA-MS-320-20 is a delivery system only -- it does not filter or deionize incoming water.
The BA-MS-320-20 is designed to work with Flow-Rite single-point battery watering kits and manifolds. Common compatible system families include the Flow-Rite Pro-Fill and QT series battery watering systems. If your battery bank does not yet have a watering manifold installed, Flow-Rite sells complete kits sized by battery count and battery type (6V, 8V, 12V cells).