I have two PolyRC 4s3300mah 25C lipo packs with 5.5mm bullets on them. They were used in my boat last season and for about 5 charges this season. One pack has a little of the shrinkwrap torn in the corner. They have about 35-45 charges on them each and were used in parallel in my boat. They still hold a charge good but you can tell that they start to lag a little compared to my fresh packs. These would work perfect in lower current applications. They were charged with my CellPro 4s chargers and were always charged at or below 1C.
$70 each shipped in the US only. I take paypal or a money order.