Qwik-Fill - Frequently Asked Questions

You can plumb a total of 3 batteries together using the Qwik-Fill system, although many users prefer to limit (for ease of filling) the number of batteries plumbed together at 2. 


  • Water After Charge - Electrolyte levels drop during discharge and rise during charge. In addition, charging generates heat, fluid expansion and explosive gases.  Watering a battery before charge (or with a low charge level) can lead to boil over resulting in potential damage of the watering system, battery and vehicle. 
  • Water must always be added after fully charging the battery.  If your battery charger has an equalize function it is best to add water after equalizing the battery.  Prior to charging, there must be sufficient water to cover the plates. If the battery has been discharged (partially or fully), the water level should still be above the plates.

Watering intervals are dependent on the local climate, charging methods, application, and age of batteries. Flow-Rite recommends that new batteries be checked once a month and older batteries be checked weekly until you get a feel for your water consumption rate.

Typically for a heavy use application, we recommend watering a maximum of once per week, and for light use applications once per month. Generally it is best to water on Wednesdays for most applications. Specifically you should not water a battery that has been sitting for an extended period of time with no activity (non use or not on charge) such as a battery that has sat over the weekend. It is best to water a warm battery that has just been fully charged.

No, Leaving a water supply connect to the your SPW system will cause the batteries to be over filled as well as permanent damage to the water supply.  Always disconnect after filling is completed.

No, The Qwik-Fill system is designed to work with the RV-2020 hand pumps only.  Modification of the hand pumps or use with other water supplies can damage your Qwik-Fill system and will void your warranty.

1.25 inches after the system has been installed, although you will need 2.5 inches of clearance for installation. 

The Qwik-Fill system will fit on most Group 24-31, 12 volt marine deep cycle, dual purpose, and starting batteries.  Specifically those batteries that conform to the standard 3 cell space.  Each hole should .75 inches in diameter and spaced 1 5/8 inches apart (measured center to center)
Qwik-Fill install dims.

No, your Qwik-Fill system is designed to be left on your batteries while your vehicle is in winter storage; however, the system will not be operational while it is frozen. 

Currently we do not offer a system for the 4D or 8D style batteries.  

Flow-Rite reccomends that batteries are watered on a dedicated schedule to ensure that all batteries get watered.  

Qwik-Fill manifolds vent gasses from the battery through dual flame arrested vent ports in the same manner as your factory vent caps would.  Qwik-Fill vent

Do the Qwik-Fill manifolds allow my batteries to vent charging gasses?