When a battery has been unused for 6 months, check the charge status and charge or dispose of the battery as appropriate. The typical estimated life of a Lithium-Ion battery is about two to three years or 300 to 500 charge cycles, whichever occurs first.

You complete one charge cycle when you've used (discharged) an amount that equals 100% of your battery's capacity - but not necessarily all from one charge. For instance, you might use 75% of your battery's capacity one day, then recharge it fully overnight.

The length of time a Lithium-ion battery can last without charging depends on several factors, including the capacity of the battery, the device it's in, and how much power the device is using. On average, most Lithium-ion batteries can last between 2 to 10 years without charging, depending on how they are stored.

The most common way to charge up a Li-ion battery is with AC power using a standard wall outlet in the home. Simply plug your device into the outlet with the appropriate cable or cord that it came with.

However, most lithium-ion batteries will survive much longer than the minimum, in the region of 10–15 years. These batteries may last up to 3 times as long as cheaper lead-acid batteries, which only last five to seven years.

Ten-year sealed battery smoke alarms are powered by sealed lithium batteries that have a life span of ten years. These alarms provide 10 years of continuous protection with no need to replace the battery for the life of the device.

Overall, the lithium battery charges in four hours, and the SLA battery typically takes 10. In cyclic applications, the charge time is very critical. A lithium battery can be charged and discharged several times a day, whereas a lead acid battery can only be fully cycled once a day.

For example, a lithium-ion cell charged to 4.20V/cell typically delivers 300–500 cycles. If charged to only 4.10V/cell, the life can be prolonged to 600–1,000 cycles; 4.0V/cell should deliver 1,200–2,000 and 3.90V/cell should provide 2,400–4,000 cycles.

This isn't a safety issue: Lithium-ion batteries have built-in safeguards designed to stop them from exploding if they're left charging while at maximum capacity. But in the long term, electronics will age faster if they're constantly plugged in while already charged to 100 percent.

Contrarily to some received ideas, Li-ion batteries don't have a memory. They don't need regular full discharge and charge cycles to prolong life. It's actually the contrary: the smaller the discharge (low DoD), the longer the battery will last, the more cycles it will be able to do.

So if you look on your cell. Phone you have zero to 100%. And that tells you the state of charge of your cell phone's battery if you have a lead-acid battery.

Or higher. However if you have a power supply. Or you have a battery charger that you can put into power supply mode. Perfect because the actual bms in the battery.

Lithium-ion batteries last for 15–20 years, 3 times longer than the 5–7 years for lead-acid batteries.

Life Expectancy Generally, electric vehicle batteries last 10-20 years, but some factors may reduce their lifespan. For instance, batteries may degrade faster in hotter climates as heat does not pair well with EVs.

The Hyper Tough Fast charger recharges 20V Max* HT Charge 1.5Ah Lithium slide pack batteries in approximately 45 minutes charge time. The Hyper Tough Fast charger recharges 20V Max* HT Charge 2.0Ah Lithium slide pack batteries in approximately 1 hour.

Figure 1: Charge stages of lithium-ion The advised charge rate of an Energy Cell is between 0.5C and 1C; the complete charge time is about 2–3 hours. Manufacturers of these cells recommend charging at 0.8C or less to prolong battery life; however, most Power Cells can take a higher charge C-rate with little stress.