[TenTec] Battery Needed

[Bob Good]

Dear Group....I am in need of a small rechargeable battery, perhaps gel cell, that is capable of sustaining a load of 12 volts at 700ma continuous for a period of about 6 hours.  I need to lug it around in a hand carried case.   If anyone has such a battery or a recommendation I would like to hear back from you.  I am not familiar with capacities of such batteries.  Thanks to all.......Regards,  Bob K4BG