Overvolting Lead Acid Batteries

Is it possile to over charge a 12 volt battery to 24 volts, without causing alot of damage to the battery. Normally over charging a battery would cause it to overheat and lose water, but if I were to charge the battery, slowly, at a very low amperage should prevent the battery from overheating. The battery specifications can be found @ http://www.digikey.com/product-search/en?pv33=647&FV=fff40006%2Cfff804e4%2C380047&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25

No don't do it! You'll be lucky if you don't blow yer face off!

The basic chemistry of a lead acid battery limits it to about 2 volts per cell. Some older maintenance -free GM batteries had calcium added in the chemistry so that it wanted to be charged at 16 volts, but I don't think anybody does that anymore. Most 12 V chargers and alternators max out at about 14-15 V.
Higher charge voltages will just cause your battery to outgas and heat up.

http://batteryuniversity.com/learn/article/secondary_batteries

I think the case has been made above for not overcharging to attempt to get 24V out of the battery. May I ask why you want do do that versus using either a 28V battery or 2 series 12V batteries? Is there a particular application you are trying to use the battery with?

-Rod