Our soundcore Boom 2 SE speaker comes with a built-in rechargeable battery. Here are some tips on how to improve the battery life of speakers:

1. Do not completely discharge the battery before recharging.

2. Recharge the battery as soon as possible when the low-battery indicator is on.

3. Stop charging once the battery is fully charged.

4. Do not expose the speaker to harsh environments with extremely hot or cold temperatures.

5. Recharge the speaker regularly (once every 3 months) if it has not been used for a prolonged period.

If you have additional questions, please contact us at service@soundcore.com for further assistance.