Technical question about lithium camera batteries
Mar 1, 2017 07:45:45 #
leftj
Loc: Texas
lamiaceae wrote:
After market, third party, something non-Pentax Branded in this case.
Aren't those batteries made in factories? I guess I'm learning something new.
Mar 1, 2017 08:13:26 #
How to Prolong Lithium-based Batteries - Battery University
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Mar 1, 2017 08:14:16 #
Mar 1, 2017 08:29:55 #
Coupla things here. First safely get rid of the offending batterys. DON'T simply throw them out. Second- camera companies do not make batterys. They buy thgem from the manufacturer, of which there only a few. ALL lithium batterys are explosive when heated. That's why pacemakers and implantable defibrillators must be removed if a deceased person is to be cremated. It';s not a good idea to store batterys in the camera or a grip for long periods of time. (yes I have been present when devices were removed prior to cremation)
Mar 1, 2017 09:18:04 #
boberic wrote:
Coupla things here. First safely get rid of the o... (show quote)
Must be something going on with them. FAA: http://www.faa.gov/about/office_org/headquarters_offices/ash/ash_programs/hazmat/passenger_info/media/Airline_passengers_and_batteries.pdf
Mar 1, 2017 13:23:26 #
GENorkus wrote:
Both of my dslr's have four batteries each. I've h... (show quote)
It seems you reached the point were it seems wise to stop using said batteries (looks like its getting worse than better). Do you have a caliper? It would be interesting to measure the "growth" of your batteries, vs a new one! Luckily so far I did not encounter anything like you, although most all my batteries approaching 10 years!
Mar 1, 2017 16:48:31 #
Seems you get what you pay for. There is no comparison between buying new batteries and buying new camera. I would simply replace the batteries as and when you start to see them swelling.
Sods Law dictates ...They will crash in the most disastrous manner possible.
Sods Law dictates ...They will crash in the most disastrous manner possible.
Mar 2, 2017 07:34:51 #
dirtpusher wrote:
How to Prolong Lithium-based Batteries - Battery University
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Looks like good information! Thanks dirtpusher!
Mar 2, 2017 09:01:20 #
leftj wrote:
Aren't those batteries made in factories? I guess I'm learning something new.
I hope you're just being a wiseguy. Batteries and other accessories not made by the camera manufacturer are variously known (as in this thread) as "after market," "third party," and "non-OEM." There may even be more descriptions for them. Many photographers use them because of the huge difference in price. I have not had the bulging problem yet (other than my waistline), but I'm going to keep a close eye on my non-OEM batts. Check out the YouTube video of the guy on the bus whose pants explode and catch on fire from the Li battery in an e-cigarette. >Alan
Mar 2, 2017 09:08:00 #
leftj
Loc: Texas
aellman wrote:
I hope you're just being a wiseguy. Batteries and ... (show quote)
Nope, not being a wise guy. Just trying to learn how non-factory batteries are made. Words do mean things.
Mar 2, 2017 09:39:34 #
As the batteries are used over time they swell. This is inherent in the chemistry of the lithium-ion batteries. On batteries with many cells (for electric cars) the batteries expand to the point that compensation must be made for the swelling by foam spacers or some such means. This is irreversible and not due to simple heating and expansion. If your batteries are swelling to the point that they are difficult to remove from the camera I would consider them to be at the end of their lives. It is possible that name brand batteries are made with stronger cases to resist this expansion but eventually they will all succumb to the same fate.
Mar 2, 2017 10:13:52 #
Mar 2, 2017 10:26:43 #
leftj
Loc: Texas
cjc2 wrote:
Just another set of reasons that I use ONLY OEM batteries.
What are the set of reasons?
Mar 2, 2017 10:28:06 #
Mar 2, 2017 10:37:56 #
GENorkus wrote:
Both of my dslr's have four batteries each. I've h... (show quote)
GENorkus,
You have received many very useful answers to your initial question, but I feel they have missed the point of your question.
The answer to Q. #2 is YES!
The answer to Q. #1 is more involved.
The manufacturer of the camera has built into the camera monitoring devices to monitor the health of the battery, it is in their best interest to preserve the lifespan of both the camera and battery. Most digital cameras have external battery chargers to charge the camera battery. These chargers have built in monitoring devices to control the charge rate, current draw, and to cut off the charge when the battery reports it is fully charged. These chargers are designed to communicate with the battery during the charge cycle.
Finally, the camera manufacturer engineers into the design safety limits into the battery and its' charger to protect against unknown future events.
Many third party Li-Ion batteries and chargers do not have many of these features built in, and most are unable to communicate with the prime device (the camera).
In short, you do not have to depend upon OEM batteries and chargers, but you must be careful on the cheap Chinese knock-offs.
You can find good third party replacement Li-Ion batteries, make sure they come with their own chargers. Research the product quality forums for any battery/charger that will perform in your camera.
Michael G
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