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De-ionised Water by Top-Up Water for cooling systems, batteries and irons

De-ionised Water by Top-Up Water for cooling systems, batteries and irons


De-ionised Water by Top-Up Wat - 1 Litre

1 Litre


De-ionised Water by Top-Up Wat - 5 Litres

5 Litres


De-ionised Water by Top-Up Wat - 25 Litres

25 Litres


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  • Benefits
  • Shipping Explained

De-ionised Water by Top-Up Water for cooling systems, batteries and irons

De-ionised Water from Top Up (Water) Products is perfect for maintaining products within the home and on your vehicles. 
De-ionised water is perfect for maintaining your lead-acid batteries with a top-up. It can also be used in engine cooling systems to reduce scaling and corrosion as well as air-conditioning units. 
This is a multi-use product and can also be used in home systems, such as in steam irons. De-ionised water helps to prevent furring. 

For any automotive use where distilled water or de-ionised water is specified, and suitable for home use where de-ionised water is required.

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  • Suitable for use in wet cell batteries and to prevent irons rusting
  • Essential for battery care/maintenance
  • Various sizes available to meet your needs 


SHIPPING IS FREE* for orders of £75 and over , regardless of the weight of your order.
We've tried to keep all other shipping costs as low as we can.

Carriage starts at just £0.95 (inc VAT) for small items, with our most common courier rate set at £5.99 for orders of 5kg (enough for 5 litres of oil).

  • *Free shipping is available for UK Royal Mail, UPS Access Point™ (click & collect) and standard UK courier services (not express / priority / islands).
  • Courier surcharges mean we are unable to offer free "to the door" courier shipping from us in Cornwall up to Highlands / Grampian in Scotland - and because we send a lot of liquids, not every courier option is available to us. UPS Access Point™ (click & collect) is available as a free shipping option across Scotland, Wales and England, wherever there is a UPS Access Point™ Location.
  • Carriage charges are based on weight - please see our table of carriage costs for full details (although adding an item to your cart and viewing the calculated carriage is often easier!).
  • Priority shipping is also available.

How long will it take to get my order?

We give an estimate of delivery dates as you shop and in your basket. The vast majority of items are held in stock and dispatched from our UK warehouse and we'll do all we can to get your order to you as quickly as possible.

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