For the highest quality reproduction carts you can't go past Charlie-802.

Charlie 802 is a gold plated, 2/4/8mbyte Flashable cart available in MBC 1/2/3 or 5. Instead of the traditional Battery backed SRAM, Charlie uses and optional FRAM which needs no battery and will never loose its save file.

Currently does not support RTC so in-game RTC events will cease to occur.

Tested with Pokemon Red/Green/Yellow/Blue/Gold/Silver, DKC and various other titles.

Fits perfect in a genuine nintendo cart shell and can be purchased blank or pre-programmed.

Discount on Bulk orders.

There are various options available, contact me if you are unsure which is suitable for you. Please leave Mapper type at checkout. Multi-Mapper support is available though you will need to patch the ROM to set the mapper type before the game boots.