I bought one of these recently (free with a gift card so I can't complain). I thought I would share. It is a slow charger but it's light and compact. Great way to charge rechargeable AA, AAA and 9 volt batteries.
Solar AA & AAA Rechargeable... https://www.amazon.com/dp/B07SC9F73V?ref=ppx_pop_mob_ap_share
Solar AA & AAA Rechargeable... https://www.amazon.com/dp/B07SC9F73V?ref=ppx_pop_mob_ap_share