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Deep-discharged lithium-ion batteries cannot always be revived. In most cases, the only solution is to replace the battery.
Reviving a battery: What you can do – and what you shouldn’t do
There are many tips on the internet for reanimating batteries. However, as a layperson, you should not handle an exposed battery, wires, insulating tape and the like.
- It is better to take the device in question to a professional repair shop before attempting potentially dangerous DIY solutions. A repair shop will check the condition of the battery and replace it if necessary.
- Tip: In some cases, a battery can be revived by repeatedly charging it cyclically. Specifically, this means: you connect the device to the power supply for a few minutes and then disconnect it. Repeat the whole procedure about ten to twenty times.
How to properly care for lithium-ion batteries: This is how you extend their lifespan
Lithium-ion batteries are now built into almost all mobile devices such as smartphones, laptops, tablets or e-bikes. They are powerful, compact and durable – but only if they are treated properly.
- Avoid full charging cycles: lithium-ion batteries don’t like extreme conditions. Both a full discharge and a permanent full charge can put a strain on the battery. If possible, keep the battery level between 20% and 80%. Avoid frequent charging to 100% – especially if the device will not be used for a long time afterwards. Full charges increase the cell voltage and accelerate the aging process.
- Protect the battery from heat and cold: Extreme temperatures have a negative effect on the performance and lifespan of lithium-ion batteries. Do not store or charge devices in direct sunlight. Avoid use at temperatures below 0°C or above 35°C. Remove covers or cases when charging if the device heats up significantly. The ideal storage temperature is around 15–20°C with a battery level of approx. 50%.
- Use the battery regularly – but do it right: a lithium-ion battery wants to be used. Leaving it fully charged or discharged for weeks will reduce its capacity. Avoid leaving the battery fully charged or discharged for weeks at a time. Recharge devices that you rarely use every few weeks. Before storing a device for a long period of time, discharge it to about 50% and turn it off completely.
- Use software optimizations: Modern operating systems now offer battery-saving features that you should activate. These include optimized charging (e.g. for Apple and Android devices), limiting the charging threshold to 80% for laptops, and power-saving modes for longer periods of inactivity. Check the power settings of your device to see which options are available.
