
- of course ..
For smartphone's the li-ion battery does not actual charging timeframe, u can just charge and use straightaway .. but the battery care is the most important thing. Once a week full discharge till empty and re-charge to full is recommended.
As myself, i never charged my phone battery 8hrs as recommended for the fone shop

why shud i do tat? the same old stories for NiMH and Li-iON? i think the shop guys are just plain stupids
As we all know that Nokia 5800 have big battery with it. But with few tips you can keep it for longer time without charging. The battery is charging when the battery icon’s bar chart (in the top right corner of the screen) is animated. When the battery is full, the bar chart is full and has stopped moving. If you want to make sure the battery is full, wait for the animation to stop moving before you disconnect the charger.
- Always charge your battery to full mark.
- Don't switch off your phone
- Shut down unnecessary applications
- Turn down the 5800's screen brightness to the lowest acceptable level
- Use headphones instead of speakers (if can)
- Avoid using bluetooth headset
- Avoid using flash unnecessary
- Use 2G instead of 3G
- Use Offline Mode (aka Flight Mode) wen ure not expecting calls late nite
- Switch off Wi-Fi and Bluetooth
Keep these important points in mind and squeeze more from your mobile battery.
Added on December 2, 2009, 7:59 pmits legal .. btw it does not supports internal gps

Ohya...after i hav fully charge my hp,den i swtich on my hp,the iON battery timer(Remaining) there is written 90% and not 100%..y ar?