I am trying to calibrate the battery as soon as i unplug it goes from 100 to 0% and shuts down. is this something i should be worries about.??
199024
I am starting to have problems too, my computer is getting over heated and shuts down. As to your case, how long have you left it on the charger without usage?
1193130
I am not sure why it does it, but mine does it occasionally also. One thing you can check is to see what Amp hour you have it set for, It seems that when mine shows that I have had the Ah set wrong and it is showing that because I have had it set to a higher Ah battery than what I actually had. The battery will only take so many amps before the resistance gets too high and charge shuts off. If you have a 100 Ah batter and have the meter set to 200 Ah, The meter will show half full when the battery is full and the charge shuts off or goes into float mode from the controller. That is where I would look first. Make sure that you have the meter set right with the battery you have and then if it still shows 60%SOC you may have a bad one. But After I changed my settings, the meter seems to be reading correctly. It has actually gone to 100% Hope that works for you!
982877
You need to calibrate the phone's charging sensor. There are instructions for this online. Basically, the battery is charged 100%, but the phone only thinks it's at 80%. When you unplug the charger, the phone looks at the battery and decides it's at 80%, so it drops down to that level almost immediately. It's the same reason why some people report that the last ten percent of the battery's charge seems to last longer. The phone thinks the battery is almost empty, but it is actually 30% or more charged.
1340771
I purchased as a gift for my son at Christmas, he's had zero issues. Once the battery is fully charged, disconnect. Removing the connection from the laptop when finished using would prove ideal. Keeping it connected kills the battery much more quickly. Contact Philips or Batteries Plus is a great place to look. Hope this helps and good luck.
2111330
M_ENGLE and DUSTY comments contradicts what Bob commented...I want to use this device for load testing and confirm the condition of any battery......who am i to be believe now, because am about to place order.
620623
Just tested. Yes, if you unplug and then plug again it will start running without a resetting.
1580574
I've plugged in another brands battery pack like this and when I plugged it in, it instantly showed "fully charged" on it's indicators. However, I wasn't sure so pulled the plug on the charger and checked the battery voltage which was under 6V (showing that it was far from fully charged). So I plugged it back in for the 12+ hours and for the first hour, it stayed showing full (because the battery was resisting the charge power and the charger gave the lights the "full" 14V false reading), but as the battery began accepting the charge it dropped to 60% and then climbed back up over time. So don't be fooled by it showing that "full" within a few minutes, leave it plugged in for at least 12 hours (and by then it should be accepting the charge and the readings should have dropped, so once it raises again you can believe it's really "full".
2284218
It doesn't hold it's charged. When I have it plugged in it reads 100% ,and as soon as I unplug it will read 96% or as low as 83%
251567
I agree. Send it back. Mine has been perfect. Changed the battery once and it works great.
1807037
when fully charged the green light comes on and the amperage drops to zero. I leave it plugged in and in this state until ready to use.
958961
Not really, unless you consider that to get it to light up, there is a minimal current draw while the unit is lighted up. When you unplug, there is no current draw. It really doesn't "Test" to get an accurate reading. It just shows what the battery reading is.
293717
I've had difficulty with this issue, too. I think the battery tester works most accurately by just letting the battery rest.
1940814
It seems to calibrate itself upon startup. It will calibrate itself to zero if you turn it on with a container that you intend to fill already on it. As for it's need to be calibrated for accuracy, we'll we just have to trust to the gods of electronics. That said, I've never felt it might be even slightly beyond negligible where error is concerned. I'll buy another if mine ever poops out!
1022910
I believe I have had that situation in the form of unplugging the device for a minute while on. As I remember, it did not reset to "off." Sorry I can't be more specific. If I remember, I'll try it at home tonight.
315147
I second what Andrew said below, there is no such thing as "battery calibration". Whatever app you downloaded to "calibrate" the battery could be causing your battery to drain even more. However, if you delete that app and are still having premature battery draining issues, its a good chance you have a defective battery.
353890
No, that's not normal at all, it sounds like you have a really bad battery. If you are using the rechargeable lithium ion batteries that comes with it, then you probably have one that has gone bad, I would stop using it immediately, and certainly don't try to recharge it.
1372968
I think it might be that your battery is dead, LiIon batteries are highly sensitive to overcharge, meaning that they are damaged when you keep your charger connected after it has reached 100% charge. Get a new battery and try to avoid extreme charge states (full discharge and overcharge) are bad for your battery, dont let it fall under 20% and dont chrage it over 95%!! Hope this is helpful