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How long do li-lion batteries take to charge up. Is 13 hours long enough?

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I got a bytech bluetooth headphones a few days ago and the battery died after a few hours and now I've been charge it for over 8 hours and it still wont turn on when I unplug it.


Take it apart carefully and remove the battery, then replace it with a slightly larger Li-ion battery.(The headphones are built with Li-polymer batteries,lightweight,but not very efficient)

Sep 14, 2016 | Audio Players & Recorders

2 Answers

How can you tell if your alternator is going bad on your 04 honda lx 2.4 engine


Test the alternator charging capability by connecting a volt meter to the battery terminals and starting the engine. The voltage should be at least 13 VDC.
If it's less it will not charge the battery enough.
Hope this helps.

Mar 29, 2015 | Honda Cars & Trucks

3 Answers

How long should I charge my 900mah li-ion batteries for the first time? How long should be after first time?


You should be OK to charge the battery for 10 hours at a constant current of about 90mA. I assume this battery is a 3.7v type, with a full charge voltage of about 4.2v (it would be useful to monitor this with a multimeter).
Some useful commentary is here: https://www.sparkfun.com/products/341
Good Luck

Jun 08, 2014 | Sony AA Nimh 2500 Mah Rechargeable Battery

1 Answer

How many hours we should charge the battery fist time Nokia-2700


There are basically 3 types of chemicals currently being used for cell phone and laptop batteries. Ni-cad, Ni-mh and Li-ion. There is a fourth makineg its way in Li-ion polymer. A couple things are consistent for all types of batteries no matter what chemical is inside. You must initially give the battery a 12-14 hour charge on the home charger. (Don't use a cigarette adapter for the first charge. This conditions the battery and don't take it off the charger that first time even if the charging indicator says it's full after 3 hours. Also the manufacturer's also state to run it thru 3 charge cycles. What that mean's is that you fully charge and fully drain 3 times. 1 full charge + 1 full drain = 1 charge cycle. Here's where the way you charge the battery starts to differ.

Ni-cad: Mostly only on older devices, has a "memory" effect, should be drained before a full charge is put on it, should be removed after overnight charge or can be overcharged and burnt out.

Ni-mh: Still used for some devices, has slight memory effect but not enough to have to fully drain before the recharge, should not be consistently left on charger after full charge that can eventually burn out battery and shorten usage time.

Li-ion and Li-ion polymer: Used on a lot of newer devices, has no "memory" effect, should be recharged as often as possible, actually likes to be charged and draining it regularly can cause the usage time to be shortened, can NEVER be overcharged so whenever you're near a charger put it on there. Besides those benefits a li-ion battery is lighter and smaller but the chemical can hold more charge than Ni-cad and Ni-mh.

So the one reply to your question said to error on the side of draining the li-ion batteries. This is incorrect information. You want to charge the battery before it gets below a 20% charge. Also batteries will not go bad from accidentally doing the incorrect charging procedure here and there but normally follow the correct procedure. One last note try to use the home charger more often than the cigarette lighter charger for best long term results. Cigarette lighter chargers do not give a full charge (about 95%) which in the long run can damage any type of battery listed.

Oct 07, 2010 | Nokia N70 Cellular Phone

1 Answer

I put a new battery in my camera charged it. Used the camera till the battery ran down. Now it won't charge . This is the second battery I've bought every time I try to charge it won't charge.


It takes over 7 hours to charge, so did you leave it charge overnight?

But while the original battery is chargable, disposable replacements are not. Here is what the manual says:

{ ...
The supplied battery is a Li-ion battery. It charges while in the camera using the supplied charger. The camera can also use a Duracell CP1 disposable Li battery, which has the same form factor as the supplied Li-ion cell. HP claim the Li-ion cell will provide power for approximately 200 shots under "average" use and 100 shots with "extensive use of the LCD and flash".
Charge time for the battery using the supplied charger and in-camera charging is 5-7 hrs for a fully depleted battery. In the optional docking station, charging takes 2.5-3.5 hrs and using the optional rapid charger, charging takes 1-2 hrs. ... }

http://www.bobatkins.com/photography/digital/hp707.html

Aug 08, 2010 | HP Photosmart R707 Digital Camera

2 Answers

Have 24v sds drill older type the one with the charging lights on 2 of the batteries will no longer charge just go to red on charger unit can they fixed


not sure on the charge well have to check out but contact a interstate battery shop thy can rebuild most batteries

Oct 12, 2009 | Bosch Drills

1 Answer

Laptop battery wont charge


Hello,

If you want to make sure of its state, be patient and give it enough time to charge. It might take 3-to 4 hours withe the computer is turned off, and a dozen hours if the computer is beig used. If after a significant number of hours, it is still at 0mAh then either the charging circuitry is defective or it is the battery that is defective (cannot hold the charge).

Hope it helps.

Aug 29, 2009 | HP Pavilion ZV5000, ZV6000, ZX5000 Series...

1 Answer

Sony DCR-VX1000E batteries


Li-Ion batteries cannot be charged efficiently with power supplies or NiCad chargers, they need a pulse charger dedicated to Li-Ion batteries. Also, there is a danger in charging with other sources as Li-Ion batts. will catch fire or explode if not charged properly. Please get a charger that is made for those batteries

Jun 19, 2008 | Sony Handycam CCD-TRV37 Camcorder

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