How I bit the bullet. My favorite planes battery was needing a charge after flying a 10 minute flight. I brought it home and stuck it on the charger. It charged great and was showing good voltage. I cycled and it pulled a bit over 300MAH and started charging again. I cycled it three times and just over 300 was all it would pull. When I pulled the battery to replace it I looked at the date I had printed on it. 2004, I guess I got my moneys worth and was lucky I checked voltage after each flight. I cycle every few months and this battery tested good a few months ago.