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Rechargeable batteries fail if stored for long periods in a flat state.
If the cell phone battery is more than 3 - 4 years old then the battery could be worn out. Rechargeable batteries have a finite number of charge and discharge cycles and will lose their charge capacity over time, i.e. won't charge to 100% and gradually the charge reduces until the battery won't charge up at all. OR The battery shows a 100% charge but when the adapter is disconnected the battery drops off to zero capacity in a very short time. If the battery drops to an unacceptable charge level then the battery needs to be replaced. Rechargeable batteries will fail if stored in a discharged state for long periods.
I've found using the internet even briefly KILLS your batterys, especially if you do anything that requires streaming data (ie, youtube, streaming radio).
For instance, I listened to SomaFM streaming radio for about 10-15 minutes the other day (without headphones), and the battery went down 10% in that amount of time. You're basically talking 1% per minute when streamin audio. All I know is once this thing becomes a little more capable with streaming, I'm going to need to get a spare battery or bring my charger to work and just keep it plugged in.
Even worse is watching Youtube. I had a bit of downtime at work and watched 3-4 Bill Maher clips on youtube (this time with headphones). Over a period of 20-30 minutes, my battery went from 85-95% to 25%. It basically kills your battery, so be carefuly with youtube.
When I use my call normally for texts, emails, and calls it seems to hold a charge no problem. Especially when I consider that my brand new FULLY-charged laptop only lasts about 2 hours when I'm using it for browsing the web.
How Long Does the Nokia E65 battery REALLY last? Ever wonder how long the phone battery actually lasts? For the first use of my Nokia E65, I charged the phone for 24 hours after receiving it (still not sure if this is necessary), then took it off the charger Saturday afternoon. The battery low warning first sounded 54 hours later. This was after
•Calls: Around 15 calls made and about 3 calls received, with almost 40 minutes call duration in total. •Data: 726kb data sent and 3.96mb downloaded •WIFI: About 20 minutes of WIFI use •Applications: Use of Skype and Gmail application as well as a bit of Nokia Maps and Google Maps The battery eventually gave up after 2 more hourse of standby. The Nokia website says the following about the Nokia E65 battery:
•BP-4L 1500 mAh Li-Po standard battery •Talk time (maximum): GSM up to 11 hours; WCDMA up to 4h 40 min •Standby time (maximum): GSM up to 18 days; WCDMA up to 20 days;WLAN idle up to 170 hours
If you are wanting to make comparisons with the Nokia E71 battery life, this is what the Nokia website claims for the Nokia E71. The Nokia E65 and E71 both use the same battery - BP-4L 1500 mAh Li-Po battery but E71 is slightly more demanding on the battery life.
•Talk time:- GSM up to 10 h 30 min- WCDMA up to 4 h 30 min •Standby time:- GSM up to 17 days- WCDMA up to 20 days- WLAN idle up to 166 hours If you are willing to help, maybe you can do the same experiment for your Nokia E65. Use the call logs and the data counter under "Connectivity" and measure how long your Nokia E63 battery lasts with "normal" usage. Report your findings in the comments below and someone just as curious as you googling battery life E65 will also benefit from your efforts.
Your mobile habits may not be as demanding as me but I hope this helped you in your battery life calculations for the Nokia E65.
To charge a battery from empty to full, it took 2 hours and 40 minutes
....... If you are willing to help, maybe you can do the same experiment ... It lasts me about 40 hours before I get a battery low warning .... I got my Nokia E65