[bradhs]

Anyone having this problem...

My Blackberry 8700 Extended Battery wont fully charge with the wall charger. It gets to about 85% to 90% and stops. The only way to fully charge it is with the USB cable tethered to my laptop. What's also funny, is that last night it was 95% charged (via USB cable) and I unplugged it from my laptop and into my wall charger and this morning it's back to 85%.

I don't believe its the battery, and it might not be the wall charger. If the wall charger wasn't designed to charge this large of a battery, but that doesn't sound right, since it's just a function of time. My wall charger's output is 5vdc .75A (= 750mA).

Now I know the standard battery is 1000mAh and the extended battery is 1800mAh. But again, it's a function of time, not power to get it up to fully charge status.

Question 1: Does anyone have a wall charger that came with their 8700 that's different than mine, if so, what are the output specs? Maybe I have a very early phone charger since I picked up my BB 8700 once it was available.

Question 2: Any ideas??

Also, to answer some obvious questions:
- Already tried to fully charge it by leaving it alone for 24 hours.
- The laptop USB cable gets it to 100% without a problem, more than once now.
- My Blackberry 8700 is an 8700c from Cingular Wireless
- I am on AT&T Wireless will BB unlimited and it's also my voice phone.
- I love my Blackberry and since I'm a consultant, I've been pushing it to all my clients, who also love it! (Once I get them switched over.)

By the way, last night I loaded the 4.1.0.264 software on my 8700c and that didn't resolve the problem. (I've had the battery for a week now.)

Everyone is awesome on here! Keep up the great work. This is one forum where you can go to it and get an educated response.

[Maalot20]

Good assessment and I have the same question. Who did you buy yours from?

[mas90guru]

I was researching the same 95% issue and noticed that when I plugged by 8700C with extended battery into the USB port the status almost immediately showed 100%. I'm guessing some type of software bug.

[Chinasaur]

My 7290 began doing this. Stopped at 86%. i solved my issue. It's a disconnect between the battery and charging circuit. May have been caused due to not using it for months on end.

After sitting at 86% all night, I pulled the battery and left it out for a few minutes. I reseated the battery and when it booted, displayed battery strength at 95%. I plugged it back in and it charged to 100%. No problems since then.

Might try it and see if that helps.

[tsac]

There is a limiting circuit that keeps the BB from over charging. it should be built into the battery itself. Possibly the replacement batery does not limit ( it should or it's dangerous ) or it's limiter is not working correctly. Most of the charge limiters work on the tempreture of the battey. If you have it covered or protected over try removing the skin.

I was considering the extended battery also, what type and supplier did you buy? 1100, 1400, 1800 mhr?

thanks

[John Clark]

I have this problem with an old 7100t. It has an OEM extended battery and no skin or case. It will sometimes charge to 95%. If I leave it and come back I notice it drops to 85% (while still plugged in.) If I unplug it for a while and come back later it will say 95% again. It seems to last the same amount of time...I just consider it a bug. The temperature thing makes sense though. The wall chargers may charge too fast and heat them a little more than a USB port. MHO

[tsac]

The usb port is limited but the problems seem like something the vendors should have a fix for . Possibly a different wall charger. If you can't get a full charge why bother with an extended battery. I have to do a little more digging into this.

[emilie8700r]

My 8700 battery is garbage. I have to charge it EVERY night... somtimes during the day with my usb cable. I have the opposite problem thought. My wall charger is the fastest and most powerfull... my usb charger is crap.