Yes, don't over charge it, even if this means full scale war with kyo I still insist on this

haiya, if battery die change a new one loh.....

Well, according to Nintendo, the Nintendo DS's power light will change from green to red when the battery life is around 30%.

Sauce: http://tinyurl.com/6qp26 for some non technical info of the battery.

Edit: And according to Battery University, a lithium-ion battery provides 300-500 discharge/charge cycles. The battery prefers a partial rather than a full discharge. Frequent full discharges should be avoided when possible. Instead, charge the battery more often or use a larger battery. There is no concern of memory when applying unscheduled charges.

Sauce: http://tinyurl.com/djkn. Read more at http://tinyurl.com/abxgrk about lithium ion battery care sheet.

This post has been edited by LEVIATHAN: Feb 12 2009, 06:32 PM

Nice idea
but waste money