Battery lifetime
Lifetime can be influenced by the end user
| Use | Lifetime of battery pack | |
|---|---|---|
| Selection of power tool and battery | suitable for the application | high |
| Selection of power tool and battery | too weak | low |
| Load on the battery as a result of the various applications (applies only to NiCd and NiMH) | Screwdriving/drilling small diameters | high |
| Load on the battery as a result of the various applications (applies only to NiCd and NiMH) | Sawing/hammer drilling large diameters | low |
| Charging process (memory effect) (applies to NiCd and NiMH) | complete discharging/charging | high |
| Charging process (memory effect) (applies to NiCd and NiMH) | partial discharging/charging | low |
| mechanical load | normal treatment | high |
| mechanical load | rough treatment | low |
Lifetime cannot be influenced by the end user
| Effect | |
|---|---|
| Ageing | Every battery ages with time, regardless of whether it is in use or not. This results in loss of voltage and capacity. |
| chemical process | All materials suffer corrosion with time and use. This results in loss of voltage and capacity. |
| Electrolyte drying out | The electrolyte loses moisture with time and use. This results in loss of voltage and capacity. |