Highest mV yet, all? (Power Manager)

[rynosaur]

So . . . this thread could have just as well gone into software discussions, but since it pertains to the battery, here I go. I installed (with delight) the Power Manager available yesterday on the market, so battery-death-phobic as I am (why I purchased only ONE laptop in my life, used, and stayed with desktops from then on), and have been pleased already with its enforcement of battery-saving policies (because I compulsively turn everything ON and can't stand to disable stuff like WiFi, GPS, BT, etc).

One cool function is the battery charged mV indicator. I've found that my battery only charges 100% when I have the phone off--charging while powered on results in like a 99.50% charge--which isn't quite good enough, even though the phone (status menu charge indicator/sleep screen) seems to round-up to 100% when it's close but not really 100%. I think this matters for the Lithium Ion battery's longevity.

So my battery charge indicator in Power Manager hasn't gone any higher than 4203 mV with this replacement battery I received from Tmo and RC30. Has anyone else installed Power Manager and noted their "highest charged" numbers?

Thanks for your input!

[TheBlur]

Nope...mine seems to always be right around 4050 mV. Not sure exactly what this means though

[andonnguyen]

I've gotten up to the 4600's =[

[zevansg1]

i got 3707 right now.. what does this mean? good or bad?

[rynosaur]

i got 3707 right now.. what does this mean? good or bad?

Higher is better!

The mV reading is how much DC power (potential) your battery can put out at a specified load. I think it's an 1150 mAh battery (milli-amp/hour) battery, which if I was more into electrical I could tell you what that voltage reading comes out to as far as % charge. The phone computes it roughly for us, but like I said 100% isn't always 100%, that's why I was asking what other people have for maximum millivolts. No two G1 batteries will be the same, just as two auto batteries (which are wet cell) will ever be the same, but you can expect a range.

Anyhow, I've only gotten as high as about 4300 -- dude about has gotten 4600, that's really good. I'm amazed such a small battery can put out nearly 5 volts! 3707 tells me you need to do some more wall charging!

[andrews240]

I am hovering around 3800 @ 71%. I think that this thread will be a valuable resource for troubleshooting battery issues.

Subscribed.

UPDATE: 4124 on a full charge.

[jamezracer]

each individual battery has the same nominal voltage plus or minus a few milivolts as the voltage is determined by the chemical reaction that takes place inside. this is why aaa batteries put out the same 1.5v as each cell inside of an alkaline d-cell. the differences you are seeing between phones is because the voltmeter inside of phones is very crude and varies readout greatly between phones. this is why you MUST callibrate your phone's battery monitor when you get it or put a new battery in it by fully charging and discharging so that the phone knows what voltage it's voltmeter claims the battery is at when it's full and empty. from that it figures out what charge the battery has. these lithium ion cells most cirtainly do not put out 4.6 volts. past 4.3 I believe they are prone to blowing up.

also, don't think your phone is somehow more powerful when it's on a full charge, the actual circuitry runs off of a few voltage regulators that cut it down to between .7 and 3.0 volts depending on the component.

The only numbers that matter are the % charge left (assuming you have callibrated it properly) and the advertized capacity of the battery.

[rynosaur]

each individual battery has the same nominal voltage plus or minus a few milivolts as the voltage is determined by the chemical reaction that takes place inside. this is why aaa batteries put out the same 1.5v as each cell inside of an alkaline d-cell. the differences you are seeing between phones is because the voltmeter inside of phones is very crude and varies readout greatly between phones. this is why you MUST callibrate your phone's battery monitor when you get it or put a new battery in it by fully charging and discharging so that the phone knows what voltage it's voltmeter claims the battery is at when it's full and empty. from that it figures out what charge the battery has. these lithium ion cells most cirtainly do not put out 4.6 volts. past 4.3 I believe they are prone to blowing up.

also, don't think your phone is somehow more powerful when it's on a full charge, the actual circuitry runs off of a few voltage regulators that cut it down to between .7 and 3.0 volts depending on the component.

The only numbers that matter are the % charge left (assuming you have callibrated it properly) and the advertized capacity of the battery.

I agree with most everything you say, but while the nominal values for our batteries are all the same, they will never be exactly the same in relative efficiency, especially as they age and are exposed to different heat, stress, and recharging habits. I'm just trying to get a baseline for what "normal" is. I don't think our volmeters are extremely crude: any device than can measure to a thousandth of a volt (thus 4 significant digits in milivolts) is certainly pretty precise! Most DVOMs I've used won't measure this precisely.

[andonnguyen]

Higher is better!

The mV reading is how much DC power (potential) your battery can put out at a specified load. I think it's an 1150 mAh battery (milli-amp/hour) battery, which if I was more into electrical I could tell you what that voltage reading comes out to as far as % charge. The phone computes it roughly for us, but like I said 100% isn't always 100%, that's why I was asking what other people have for maximum millivolts. No two G1 batteries will be the same, just as two auto batteries (which are wet cell) will ever be the same, but you can expect a range.

Anyhow, I've only gotten as high as about 4300 -- dude about has gotten 4600, that's really good. I'm amazed such a small battery can put out nearly 5 volts! 3707 tells me you need to do some more wall charging!

Yeah it got up to 4600 when my battery was over 45 degrees celcius. lol. I had it tucked under my pillow and it overheated. There's something buggy with my battery. It's been 12 hours and I'm only down to 84%. Granted 60% of the time it was on standby. But at least it looks like I can go longer without charging. WTF.

[Greenie UK]

Mine is Showing 4099Mv.. guessing thats quite good ??