Can I put rainwater in my car battery?

Never mind the alarms about “acid rain”. The only concern with using rainwater in batteries is the contamination that can occur in collection. Filtering will usually remove most of it, just as Dave said. I’ve collected and used rainwater in batteries for decades; no problem.

Can I use rainwater instead of distilled water?

Within 20 minutes of pouring rain, pollutants in rainwater are washed away. So the rainwater after 20 minutes is like distilled water. If we want to use this water, it is important to keep catchment area clean. Even though the mud is mixed with rainwater, don’t worry.

Can I use rainwater to top up my car battery?

I have used rain water for topping up batteries for years without problems. (No iron guttering though). In a cooling system scale formation can be a problem due to narrow passageways in the heat exchangers. Rain water is soft (there is a big free distillery up there) and usually free from harmful chemicals.

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What kind of water do you put in a car battery?

The most common type of water used in batteries is distilled water. Other types are deionized water and water from reverse osmosis. Ordinary tap water should not be used because it may contain an excessive amount of impurities that will degrade battery performance.

Does rain affect a car battery?

Yes, you can safely change a car battery in the rain. … Other than the discomfort of getting wet while changing the battery in the rain, there is not much danger to you. Just try to keep the area as dry as you can. The moisture will corrode the battery terminals and connections over time.

What can I use instead of distilled water?

4 Substitutes for Distilled Water

  • Mineral Water. The first alternative to distilled water is mineral water. …
  • Spring Water. Then, you’ll find spring water. …
  • Deionized Water. Also known as demineralized water, this type of H2O has not a single ion of minerals. …
  • Osmosis Purified Water.


How do you sanitize rainwater?

The most common technologies include boiling, iodine, chlorination, solarization, ultraviolet (UV) irradiation, ozonation, microfiltration and ultrafiltration.

Can I put rainwater in a battery?

Can we use pure rainwater to fill batteries? Yes you can. It wouldn’t be the optimal solution but it can be done. Distilled water, which is the best to use, has about 5 parts per million (ppm) dissolved solids.

Can I use rainwater for my battery?

The best way to fill a battery is with deionised, demineralised or distilled water. … Tap water has containments, which build up in the battery, like minerals, which will build up over the battery plates clogging the pores. If you are in dire need of water, you can use rainwater if available.

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Can I use bottled water in battery?

Bottled or Tap? Because tap water contains minerals and natural content that could corrode the battery, it’s best to used bottled water. Use distilled or deionized water to fill your battery, as it doesn’t contain the mineral content of tap water.

What happens if battery water is low?

A battery with low battery fluid levels also gives signs you shouldn’t ignore. Slow crank/no crank starting condition, dimming lights, alternator or battery light flickering on, other electrical problems or even the Check Engine Light illuminating can point to battery problems.

Can you put too much water in a battery?

Don’t Over Water

If too much water was added before charging, the electrolyte levels will expand and cause the battery to overflow and damage the battery. Additionally, excessive watering of a battery can result in additional dilution of the electrolyte, resulting in reduced battery performance.

When should I add water to my car battery?

Use only distilled water when filling a car battery. Using anything other then distilled water will cause permanent failure of your battery. Add water to the battery to bring the level to just below the bottom of the cell inspection hole.

What causes a car battery to lose power?

What Causes a Car Battery to Keep Dying? Some of the most common reasons for a car battery to die repeatedly include loose or corroded battery connections, persistent electrical drains, charging problems, constantly demanding more power than the alternator can provide, and even extreme weather.

What happens if you pour water on a car battery?

However before you start fiddling with your battery, you need to be aware that batteries are filled with a corrosive and volatile mix of distilled water and acid. The fluid will burn your skin and damage clothes and paintwork.

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How do you know if its the battery or the alternator?

If you have a check-engine or battery indicator light illuminated on your vehicle, it could indicate a problem with an automobile charging system, or if your vehicle gets a jump-start and immediately stops running, it could be an indication that the alternator is malfunctioning.

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