Canon camera battery

[tomorrowstreasures]

http://www.amazon.com/Canon-1390mAh-Lithium-Battery-Camcorders/dp/B0001GMIOE/ref=sr_1_2?ie=UTF8&s=electronics&qid=1251647943&sr=8-2

Does any one else have issues with this battery? I have 2 bodies, EIGHT batteries to cycle through. Have had them for about a year to a year and a half at the MOST. I now have FOUR batteries that have DIED!!!!!!!! :mad::mad::mad: UNBELIEVABLE. What is up with that??? The reason why I think that they are dead is b/c when I put them in the charger, they show charge complete in a matter of minutes, then I go to use the battery and it will not work.

Advice and opinions most welcome!!!!

[Iguanasan]

Haven't tried this place so it's not a recommendation but the price seems much nicer: https://www.batterycanada.com/up-bp511.asp

I'm shooting with the Rebel XSi and so far I haven't had any battery issues. Only been shooting with it since April though.

[tomorrowstreasures]

thanks a bunch for the link, Igs!

[Mad Aussie]

We have two canon batteries and two cheaper branded ones for our 40D's and have no issues with any of them. I'm wondering if the problem lies in the charger but then you probably use both of the chargers you got with the camera so I guess not.

Where do you store them? Somewhere warm and dry?

[tomorrowstreasures]

We have two canon batteries and two cheaper branded ones for our 40D's and have no issues with any of them. I'm wondering if the problem lies in the charger but then you probably use both of the chargers you got with the camera so I guess not.

Where do you store them? Somewhere warm and dry?
actually, i have only used the one charger, store the batteries in my jammie dresser drawer - i know, don't ask.

[Mad Aussie]

i know, don't ask.
I won't! :eek:

[AntZ]

I have also had 2 x canon batteries for my 40D and find them amazing. I have taken over 13000(wow , that surprised me this is just what I kept) shots in around 1.5 years.

How flat do you run them? I try to recharge mine before they need it and try not to push in to the battery alarm zone for too long. I remember reading that over flattening them can cause issues for the battery.

OK quick search found this
"Caution should be exercised not to discharge a lithium-based battery too low. Discharging a lithium-based battery below 2.5V may cut off the battery’s protection circuit. Not all chargers accommodate a recharge on batteries that have gone to sleep because of low voltage.

Some Li-ion batteries feature an ultra-low voltage cut-off that permanently disconnects the pack if a cell dips below 1.5V. This precaution prohibits recharge if a battery has dwelled in an illegal voltage state. A very deep discharge may cause the formation of copper shunt, which can lead to a partial or total electrical short. The same occurs if the cell is driven into negative polarity and is kept in that state for a while. A fully discharged battery should be charged at 0.1C. Charging a battery with a copper shunt at the 1C rate would cause excessive heat. Such a battery should be removed from service.

Discharging a battery too deeply is one problem; equipment that cuts off before the energy is consumed is another. Some portable devices are not properly tuned to harvest the optimal energy stored in a battery. Valuable energy may be left behind if the voltage cut-off-point is set too high.
"
here http://www.buchmann.ca/Chap5-page3.asp

[Iguanasan]

Interesting. This is completely opposite to what you are supposed to do with NiCads which had a memory. Nice to know.

[tomorrowstreasures]

hmmmm- that may be the problem -o as i totally kill the battery as a rule before a recharge- as that is what i was taught way back when ---hmmm.

[Iguanasan]

Let me know if you buy any batteries from that link I posted. I was about to buy a new camcorder battery just before my vacation since it was almost half the retail value but I found the site too late to order in time for my trip so I ended up going retail and paying full price :(

I'm not sure how well this guy can scale but he seems to be doing all this himself. As soon as I find a reason to buy a new battery I'm going to give him a try but I'd love to hear about anyone else who might try him out.