I think I found a way to do it.
1. Get your iTouch moderately frozen.
2. Leave it in your pocket till it's warm.
3. Use your iTouch until the battery runs out.
4. Charge for 5-10 hours for a long battery life.
When you cool down devices, it requires less power, to do the same work, as I think your ITOUCH should run faster than normal with no loadings screens. Only other idea really was to send it back to Apple or so, If you have that limited 1 year coverage.