Yes, Costa Rica, Ecuador and Panama are 110 – 120 volts, so most North American plugs will fit. Be advised that many outlets are not grounded or polarized, and may not accept the taller vertical blade or the third grounding pin, in which case a plug adapter would be needed. Multi-voltage devices such as laptops, phones, battery charges will not require a transformer, but may require a plug adapter. 220-240 volt appliances will require a plug adapter and a step-up transformer. More info by country here: https://www.adaptelec.com/info-by-country-c-15/?zenid=d8jgf4adsvq8ark3fq457k7n16 We recommend you also bring along some multi-plugs and/or extension cords so that you can plug in multiple chargers simultaneously.