TROJAN Flow-Rite Hand Pump for HydroLink Battery Watering — Portable 1-Gallon Distilled Water Pump, Bulb-Operated

The TROJAN Flow-Rite hand pump provides a simple, portable way to feed distilled water into the Trojan HydroLink battery watering system for one or two golf cars.

The Flow-Rite hand pump attaches directly to Trojan's HydroLink watering fittings so you can draw distilled water from a one-gallon container and accurately fill each battery without electric pumps or complex plumbing. This updated assembly no longer requires the previously included inline filter when used with the recommended water supply, and it keeps fit and function compatible with existing HydroLink components. It’s a compact, low-cost option for users who prefer distilled water or who maintain a small number of batteries.

How does the hand pump connect to my HydroLink system?

Connection is straightforward: slide the Flow-Rite pump hose onto the HydroLink inlet and place the other end of the tubing into a gallon of distilled water. Squeezing the bulb draws water into the HydroLink line and the automatic battery fill mechanism stops when each cell reaches the correct level. No tools are required for setup and it’s compatible with HydroLink fittings.

• Push-fit hose connection to HydroLink inlet
• Bulb pump draws water from standard one-gallon containers
• No special adapters or electrical power needed
• Designed to work with Trojan-recommended distilled water

Will this pump change how HydroLink filters or fills batteries?

The revised Flow-Rite assembly omits the standalone inline filter because it wasn’t necessary with the recommended water source and HydroLink’s design. Fill performance and accuracy remain the same: once a battery cell is full, HydroLink prevents further flow. The removal of the filter simplifies the hose and improves flexibility at the inlet tube without affecting fill reliability.

• Inline filter removed for streamlined tubing
• No effect on HydroLink’s automatic shut-off filling
• Improved bending/flexibility at the hose inlet
• Maintains manufacturer-intended performance

How do I operate and know when a battery is full?

Place the supply end into distilled water, attach the pump to HydroLink, and repeatedly squeeze the bulb until the bulb becomes firm. HydroLink’s valve system stops additional water when each cell reaches the proper level, so the bulb will resist further compression when filling is complete. This tactile feedback helps avoid overfilling and keeps the process tidy.

• Squeeze pump bulb to transfer distilled water
• Bulb firms when filling is complete—no guessing
• One-gallon containers are convenient, portable sources
• Works for single or dual golf car battery setups

Who is this for? The Flow-Rite hand pump is aimed at owners and maintainers of one or two golf car batteries who prefer a manual, distilled-water supply method for Trojan’s HydroLink watering system. It’s ideal for small fleet operators, hobbyists, and anyone who wants a portable, low-cost way to fill batteries without installing a permanent water line or using powered dispensers. If you already use HydroLink and occasionally top batteries with distilled water, this pump provides a reliable, easy-to-store solution that preserves HydroLink’s automatic filling accuracy.