Phone battery running on empty? Worry not, friend – this replica Rockman 1 Famicom cartridge is here to save the day. Accessory maker Spiderweb are launching an officially licensed, portable Rockman 1 phone charger this November for 4,590 yen (roughly $40 US). It's practically a 1:1 recreation of the original cartridge, right down to non-working PCB contacts.
So far the charger is only available through Spiderweb directly. If you have the means to do so, you can pre-order it here. International shipping is not available at this time. Keep your eyes peeled to eBay!