Gomadic Double Wall AC Home Charger suitable for the Garmin nuvi 2757 / 2797 LMT - Charge up to 2 devices at the same time with TipExchange Technology Custom designed advanced circuit provides precision output voltage and current regulation specific to the Garmin nuvi 2757 / 2797 LMT (accurate to 0.1v). The additional charging port is available for simultaneous charging of a secondary device. Gomadic TipExchange Technology protects your investment by providing a means to change or upgrade your charger by simply swapping the physical charging tip. Garmin nuvi 2757 / 2797 LMT specific tip as well as standard microUSB and Female USB tips are included. Additional tips sold separately. A full 10W of available charging current (e.g. 2,000mAh) is available for rapid charging. Considerably higher available current compared to standard Garmin nuvi 2757 / 2797 LMT wall chargers. One of a kind transformer is compact with foldable wall adapter, small, lightweight and highly portable. Will save space in both travel bag and wall outlets by charging multiple devices with a single transformer. The Gomadic ""Power Sleep"" feature cuts latent power draw by over 99%. Charger goes to near dormant state when not in use.