Can the cold weather drain a car battery?
Cold weather is especially hard on car batteries. According to AAA's Automotive Research Center, at 0°F, a car's battery loses about 60 percent of its strength and at 32°F it loses 35 percent. During cold temperatures starting an engine can take up to twice as much current as needed under normal conditions.
But if a car battery is discharged because of damage to cells, poor connections or a charging system that isn't doing its job, the battery could start freezing at the same temperature as water at 32 degrees Fahrenheit. "A 100 percent fully charged battery will not freeze until approximately minus 76 degrees Fahrenheit.
- A: Cold weather is often fingered as the culprit when car batteries die, but actually warm temperatures do the most damage to them. A cold battery has reduced cranking power, and cold temperatures thicken motor oil, making it harder to turn the engine over.
- As @Paul has stated the freezing point varies with the state of charge and battery type. A frozen battery can explode with considerable force spraying acid and shrapnel quite a distance. If you suspect the battery is frozen remove it and allow it to thaw.
- However, if alkaline batteries are stored at higher temperatures they will start to lose capacity much quicker. NiMH batteries stored at freezing will retain over 90% of their charge for full month. So it might make sense to store them in a freezer.
However, if those batteries are not fully-charged, they can freeze at warmer temperatures. If your car has sat in very cold temperatures for an extended period of time and won't even turn on dashboard lights, your battery may be frozen. DO NOT ATTEMPT TO JUMP-START OR CHARGE A BATTERY THAT MAY BE FROZEN!
- Figure 1: Charge stages of lithium-ion. Li-ion is fully charged when the current drops to a set level. In lieu of trickle charge, some chargers apply a topping charge when the voltage drops. The advised charge rate of an Energy Cell is between 0.5C and 1C; the complete charge time is about 2–3 hours.
- Unlike NiCad batteries, lithium-ion batteries do not have a charge memory. That means deep-discharge cycles are not required. In fact, it's better for the battery to use partial-discharge cycles. So let the battery discharge to the cut-off point and then recharge.
- Self-discharge is a phenomenon in batteries in which internal chemical reactions reduce the stored charge of the battery without any connection between the electrodes. Self-discharge decreases the shelf life of batteries and causes them to initially have less than a full charge when actually put to use.
Simply because Batteries are a function of chemical reactions. In cold weather the chemicals can not react as fast as in warm. In fact keeping a battery coldwill extend the life of the battery, by slowing the chemicaldischarge. A cold battery may still be good but will not have the same the power as a warm one.
- Simply because Batteries are a function of chemical reactions. In cold weather the chemicals can not react as fast as in warm. In fact keeping a battery coldwill extend the life of the battery, by slowing the chemicaldischarge. A cold battery may still be good but will not have the same the power as a warm one.
- Apple suggests 32° Fahrenheit as the lowest operating ambient temperature. When lithium-ion batteries are exposed to cold temperatures, their performance suffers. When cold, a phone battery can drain faster than normal, or it might say it has ample power remaining and then suddenly go dead.
- Turn your handset off and then on again. It's one thing if your phone's battery is dying simply because you've been using it all day without a break.
- Look for a battery-hogging app.
- Turn on Airplane mode.
- Turn on battery-saver mode.
- Carry an extra phone charger.
- Get a portable battery pack.
- Find a charging station.
Updated: 6th October 2019