If I overcharge my laptop hp Pavilion dv9000 battery, will the life span decrease?

First it’s important to understand what overcharging is:
Over-charging occurs when the charger keeps the HP Pavilion dv9000 battery at a temperature that is warm to touch (body temperature) while in ready condition.
Li-Ion HP Pavilion dv9000 batteries have built-in controller chips which prevent it from overcharging, as they can explode if overcharged. Overcharging does not affect the life span other than potentially destroying the HP Pavilion dv9000 battery.
A lithium-based HP Pavilion dv9000 battery should never be allowed to get warm in a charger. If you have this happen, the HP dv9000 battery is no good or the charger is not working properly. Don’t continue to use the HP dv9000 battery or charger if this happens.
A Lithium-ion HP Pavilion dv9000 battery may be damaged by extensive overcharging (continuously on a charger for more than 24 hours). Damage to the battery HP Pavilion dv9000 from overcharging would only occur in the very unlikely event of a malfunction of the charging system.