Unfortunately, this deal has expired 2 days ago.
Posted 1 July 2023

CarPlan De-Ionised Water 2.5Ltr - £1.50 @ Asda

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Treated to remove most of the corrosive impurities present in untreated water, CarPlan De-Ionised water is not only ideal for use in vehicle batteries and radiators, but also many domestic appliances including steam irons. It helps prevent furring and scale formation which, over time, could cause damage.

Use in vehicle batteries and radiators
Prevents furring and scale formation
Suitable for household appliances including steam irons

Simply pour CarPlan De-Ionised Water into your preferred appliance or battery/radiator and away you go.
Do not consume.
Asda More details at

Community Updates
Edited by a community support team member, 1 July 2023
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  1. CharlieFoxtrotCharlie's avatar
    Same price at Tesco and has been for a couple of months.
  2. jaizan's avatar
    I've been motoring for several decades and have never topped up a car battery, despite doing all sorts of servicing and major maintenance. My car batteries tend to last 5~10 years.

    Am I missing out ? (edited)
  3. Mr_Chondo's avatar
    Aren't most car batteries of the sealed type now?
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