Detailed Answer
For 8 hours/day workshop operation: lithium battery versions last 5-10 days (LIDEER LD series); NiMH 3-7 days. Actual results depend on key press frequency, backlight, and standby time. Recommendations: check the battery level each shift, keep 2 batteries in rotation, and swap when the low-battery alarm sounds. Battery life is 2-3 years (NiMH) / 3-5 years (lithium); replace when due.
| Lithium | 5-10 days |
| NiMH | 3-7 days |
| Rotation | 2 spares |
Note:Extra batteries cost little; production stoppage costs a lot.