Batteries are designed to be discharged and recharged on a regular basis. However, if a battery is left in a discharged state for too long, it can enter into what is known as deep discharge. Deep discharge occurs when the voltage of a battery drops below its minimum operating voltage. This can happen if a battery is left without being charged for an extended period of time, or if it's used excessively without being given enough time to recharge.
There are a few different things that can cause deep discharge:
1. Leaving a battery uncharged for too long: If you don't regularly charge your batteries, they will slowly lose their capacity over time. eventually reaching a point where they can no longer hold enough of a charge to be used properly. This is why it's important to keep your batteries charged and ready to go!
2. Excessive use: Batteries will also enter deep discharge if they're used excessively without being given enough time to recharge. This often happens with electronic devices like laptops and cell phones that are constantly in use throughout the day. Over time, the battery will no longer be able to hold a charge and will need to be replaced.
3. extreme temperatures: Extreme cold or heat can also cause deep discharge by causing the chemical reaction inside the battery to slow down or stop altogether. This is why it's important to store your batteries in a cool, dry place out of direct sunlight.
4. damaged cells: Finally, damaged cells within the battery itself can also lead to deep discharge. This damage can occur from overcharging, physical damage, or simply age and wear-and-tear over time