Purchased this Interstate lawn battery, 340 CCA, for $49.97 + $12.00 core charge, from Home Depot on 4/16/2016.
Had to charge it for 9 hours before installing in mower, it cranked the mower easily, looked good.
The next time I took the mower out, I had to help the battery by twisting the top of the engine by hand to get it going, it almost didn't start.
After mowing I checked the battery, it was fully charged. Then I disconnected the positive battery terminal and measured the leakage current with ignition switch turned off, less than .001 micro amp, so the mower didn't have a problem causing the battery to drain.
Next mowing, 1 week later, the battery checked a little over 12 volts, but would not crank the mower without assistance by twisting the top of the engine by hand, barely started. Decided to return the battery to Home Depot, will never buy one of these again. Going back to using the Lowe's Magna Power battery even though it's only rated at 300 CCA, those normally last me about 5 or 6 years.