900mAh 3.7V Replacement Battery for Franklin Dictionary EST-4016, 0D01004506PA0 | eBay
Franklin Deluxe Electronic Official Scrabble Players Dictionary No Battery Cover 84793998232 | eBay
Lithium Battery Cr2450 Coin Cell, 3V, Suitable for Car Key of Various Brands, Electronic Dictionary, Power Supply for Mainboard, Watch, Brand Lixing/Lisun/OEM - China Lithium Battery, Laptop Battery | Made-in-China.com