GBA micro - batterylenght

[MatteKalle]

Ive just bought a GBA Micro and also a EFA Linker 2 1gb card.
Ive loaded my GBA Micro and the battery in the EFA Linker 2 (for saves) one time each.
What Ive read is that the battery lengh should be about 9-10 hours or something like that. Mine now shows red light after about 5h (absolutly not more).

What is wrong!?

[xzerox]

probobly cause you play it went is charging

[Video_freak]

make sure you charge it to 100% once, without playing at the same time. then make sure you use it completly up after that 100% charge. that should get some more time out of it.