What are the advantages of lithium batteries over conventional batteries?
Lithium batteries have a high voltage, low self-discharge and can be stored and operated in a wide temperature range. Also, they have no memory effect. This means that there is no loss of capacity with frequent partial discharge, as is the case with nickel-cadmium batteries, for example.
What is self-discharge?
Self-discharge is something that occurs in all types of single-use and rechargeable batteries, caused among other things by processes in the electrodes. How badly the battery is affected depends on the battery type, in other words, what it is made of. When stored at around 20 degrees Celsius, a lithium-ion battery loses less than 2% of its charge every month. It is nevertheless advisable to recharge lithium batteries to between 50% and 60% of their capacity before long periods of storage (more than 12 months) in order to avoid deep discharge.
What is deep discharge?
Deep discharge means using the battery until it is almost completely discharged. When applied to devices, this means using the device until it switches itself off. In the worst case, this can even lead to total loss of capacity when recharging the battery. This means it is always advisable to charge the battery in good time. Because lithium batteries have no memory effect, you can always recharge them without worrying. However, short bursts of charging should still be avoided. But with your Cherry device, deep discharge is almost impossible. This is ensured by the device automatically switching off if it falls below a specified capacity limit. All you need to do is charge it in good time to prevent deep discharge and damage from further self-discharge.
How do I store lithium batteries correctly?
As a rule of thumb, the right storage temperature is room temperature. Generally, storage at 15 to 25 degrees Celsius is ideal. To prevent deep discharge and any resulting damage to the battery, the charge level should be around 50% – 70% before prolonged storage. A charge of 100% should be avoided, but this is automatically prevented on your Cherry device by a battery protection circuit. During storage periods of much more than 12 months, batteries should be recharged occasionally to prevent deep discharge. Extreme and fluctuating temperatures should be avoided.
How long can I use my batteries?
Depending on how you use and look after them (for example by avoiding deep discharge, incorrect storage etc.) lithium batteries can be used for up to 3000 charging cycles. Rechargeable batteries are considered worn out if they drop below 75% of their original capacity.
How can I maximize the life of my battery?
Keeping the charge between 30% and 70% is ideal for a long battery life. It is not advisable to always charge the device up to full capacity, because constantly high charge levels negatively affect the battery life. This means it is not recommended to charge devices overnight because the battery is then regularly at the upper capacity limit for relatively long periods. The same goes for the first time you charge the device. It does not negatively affect the battery if you do not fully charge it.
Do not expose your device to prolonged or excessive sunlight, as this causes the battery cells to age faster and negatively affects the service life. Likewise, it should not be used or stored at very cold temperatures. Use at very low temperatures slows down the chemical processes in the battery, thus significantly increasing energy consumption and causing a rapid and sharp drop in voltage. This may lead to deep discharge and possibly damage to the battery.