Detailed Answer
AA batteries (Ni-MH/alkaline): available everywhere, easy to replace, good low-temperature performance, suitable for emergency scenarios; lithium batteries: large capacity (5-10 day battery life), rechargeable (low usage cost), low self-discharge, suitable for long-term use. The Leader LD series supports both (universal compartment), Xingjia comes standard with lithium. Recommendation: use lithium for daily work and keep AA alkaline as backup.
| AA | Convenient / good in cold |
| Li-ion battery | Long life / rechargeable |
| Recommendation | Li-ion + AA backup |
Note:For extreme cold (below -20°C), use AA Ni-MH batteries.