You can buy the ikelite pod new for $87 and a new 1600 Mah battery for $60 from Kellyco. $147 total. Becareful buying battery pods used sight unseen, if end cap is cracked that will cost you $25.00 to replace, battery can have good voltage but bad cell so the amp hours can be half what it should be and you want know till you use it.
I purchased this combo late last Summer. I still haven't recharged it yet, certainly have used it at least 25 hours total by now, twice this season already. Great combo!