See video for instructions to change batteries in the reloadable battery pack or how to charge/recharge the rechargeable battery packs. 

For best performance we recommend only using Energizer lithium batteries in the reloadable battery cases.

Do not mix old and new batteries. 

If you purchased the rechargeable battery pack, it will need charged before use and periodically afterwards (see chart): 

 overall shade size          expected battery life before recharge

0 - 3,600 sq in~ 12 months
3,600 - 7,200 sq in~ 6 - 12 months
> 7,200 sq in~ 6 months 

The charger LED will turn solid green when complete.