I have four new Powersonic PS-1250-F1 batteries I bought for my Dodd battery powered preamp. I bought them from Portable Power Systems in CO. I installed them in my Dodd and both sides gave me 8.5 hours of time before they needed re-charged. I literally used the charge once on each side. I am unable to use the batteries for awhile so I would rather sell them and let someone else get some usage while they are as new. I paid $46 plus shipping but I will sell them for $30 plus actual shipping. Let me know if you need cheap replacements for your Dodd.