Philadelphia Scientific Water Deionizer

This professional quality deionizer system is not just a filter, which only removes particles, but a real ion-exchange medium that electrostatically removes dissolved impurities. Purity is comparable with distilled water and ideal for batteries.


Lead-Acid Battery Water Deionizer System
Maximize battery performance with pure water from the tap.


Our water deionizer reduces the high cost of buying bottled water and is more convenient. Each disposable cartridge purifies about 600 gallons of water (2400 liters). Why let impurities in your water reduce the life of your battery, when this system is so easy to use and cost effective?


How Does it Work?
Inside the deionizer, tap water is passed through a cartridge containing beds of cationic and anionic resins which electrostatically remove impurities. The result is very pure water. When the cartridge is exhausted, simply replace it with a fresh one. Cartridges are available for a fraction of the cost of distilled water, enabling you to produce your own pure water for less money than it would cost to buy it.


Why Use a Deionizer for Battery Water?


Metallic impurities in water can poison the battery, affect cell voltages, and increase self-discharge, all of which can result in shortened battery run time and reduced battery life. Calcium and magnesium compounds found in hard water may cause mossing and dendrite growth through the separators. Note that these impurities are dissolved in the water and cannot be removed by conventional filters. Using deionized water is a simple and effective way to maximize battery life.
  • Large capacity: The cartridge is over 2 feet long (60 cm) and rated for 600 gallons (2400 liters) of pure water. Actual output varies with tap water quality.
  • Purity Light: There is no better purity control available at any price. See below for details.
  • Pressurized system: Unlike some lab-type systems, the PS-300 cartridge takes full line pressure up to 80 psi. The water flow is fast enough to use directly with the battery watering gun.
  • Ready to use: The system comes with a mounting plate, one cartridge, Purity Light, hose hanger, quick connects, input and output hoses. With the optional Watering Gun, you can fill a battery directly from the Deionizer.
  • Easy installation: Setting up the wall-mounted system takes 3 simple steps. Attach the mounting plate to wall with 2 bolts. Connect input hose to any tap with standard hose fittings. Connect Purity Light to the output assembly.
  • Easy cartridge replacement: Snapping in a new cartridge takes seconds and needs no tools. The exhausted cartridge is non-toxic and can be disposed of without difficulty.
  • Philadelphia Scientific Water Deionizer exclusive purity light
  • Flow Rate: 0.5 gpm (1.9 lpm) (with provided restrictor)
  • Purity Light – Power Source: 2 D-cell batteries (included)
  • Life estimate: 2 years
  • Purity Light – Setting: 50 ppm total dissolved solids


    • Mounting plate: 44″ x 6″
    • Disposable cartridge: 27″ x 4.5″
    • Hose: 3/8″ x 10′ (input), 3/8″ x 20′ (output), garden hose thread fittings