Terry rich, the battery is available for around $20USD at many places. Check ebay.com or [http://www.newpower99.com/ProductDetails.asp?ProductCode=Garmin%20Nuvi%20680&gdftrk=gdfV22182_a_7c573_a_7c4603_a_7cGarmin_a2s_Nuvi_a2s_680&gclid=CjwKEAjwhbCrBRCO7-e7vuXqiT4SJAB2B5u7wTsdGUQ_LCdr4LbksqH2eMOYQvGSyoZ2RGEy2MYzDBoCRk3w_wcB|on here.] Use [guide|4713|this guide] to repalce the battery.