Can powerbanks shorten lithium battery life ?

And enable airplane mode. Then it won't try to contact base stations. It is margial reception that kills the battery (or pedometer apps).

Wifi on or off didn't make a lot of difference on mine but tethering to provide Mifi services to other clients hammered it. GPS is also fairly frugal but I guess that will vary with the chipset used.

Regards, Martin Brown

>

However, using one of these directly into a LiIon battery is simply insane.

USB, sure. That's a whole different kettle, though.

Larger devices have proprietary charging system, so you make a good point about USB chargers.

My mistake, output is 5.0 volts.

Andy

Are you saying you do not know what model number means?

Andy

After charging the phone 2 days ago, it is still 3 bars out of 4 for the battery condition.

My problem must have been an anomaly. :-)

Thanks for all the responses, Andy

On Wednesday, October 5, 2016 at 1:37:47 PM UTC-7, Andy K wrote: ...

But as you can see from that link it is in fact an Alcatel 510A, not AT&T - why couldn't you say that?

If it's presenting itself as a clean 5-volt DC source, and if it's not grossly violating the USB charger/power specs, then it should be just as safe to use as any other USB charger, and it shouldn't have any more of an ill effect on a phone's battery than any other charger.

Lithium batteries do require very careful charge control, both for safety and for maximum battery life. The responsibility for this falls on the shoulders of the charge-control chip in the battery module or the phone. This chip is supposed to set the actual voltage and current which are presented to the battery itself... the charging module has its own voltage-and-current regulator built in.

The choice of the battery charging current, and the "endpoint voltage" has a lot to do with the battery lifetime. Charging to a higher endpoint voltage can increase the battery's capacity significantly, but also significantly reduces the number of charge/discharge cycles you can get before the battery poops out. A more conservative charge cutoff point may reduce the capacity-per-charge by some percent, but give you a lot more charge/discharge cycles.

No moron, I'm saying exactly what I wrote. "I have no idea what a

510A is." The stupid OP doesn't even know who the manufacturer is.

Maybe. If the OP can't be bothered to find information that will help him, I don't really have an interest in searching the web to find

*possible* matches and then find the technical information needed to decode his question.

Sorry, moron. You are the moron OP.

Absolutely true, given that lithium based batteries are very sensitive to constant current/constant voltage phases in the charge cycle.

AT&T never built your phone. They just got a sub-contractor(typically a Chinese contract manufacturer) to assemble it for them. After the device arrives, they would do some rudimentary checks, put the AT&T logo on it and sell it to you.

Reduced to name calling ?

Grow up.

Tired of being trolled, moron.

Reduced to netkopping?

>

And that is all you need to know about krw, his respect for the s.e.d., and for the people trying to sort the wheat from the chaff.

That a call a spade a spade? You bet your ass.

...said the chaff.