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canon cameras digital batteries testing

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March 14, 2012 9:17:05 PM

Hello,
A "fully-charged" battery in my Canon XTi goes almost immediately to 1/2 and then is good for about 40 shots. One battery is a Canon and about 4 years old. The brand of the other is unknown, but ia year newer. Both act the same. Battery or camera
a b w Digital camera
March 16, 2012 4:56:17 PM

Most like the battery.

For the Li-ion, which is one of the best energy densities, no memory effect, and a slow loss of charge when not in use.
The lifespan of your Lithium-ion battery is about 3 yrs in textbook, but I will say more than that. I have one canon 20D (this is one of backup camera) still works well.

A Li-ion battery can also fail short than that;
1) undercharge, if a Li-ion pack is stored in a discharged condition for long period of time will lose its charging capacity.
2) discharge/charge cycles, you can have as much as 4,700 discharge cycles if you recharge it at every 10% drop in capacity; 1,500 discharge cycles if you wait until 50% drop; and only 500 discharge cycles for 100% full recharge.

You can find more info from
batteryuniversity.com
howstuffworks.com

March 19, 2012 7:19:50 AM

FVOB said:
Hello,
A "fully-charged" battery in my Canon XTi goes almost immediately to 1/2 and then is good for about 40 shots. One battery is a Canon and about 4 years old. The brand of the other is unknown, but ia year newer. Both act the same. Battery or camera


Why don’t you get in touch with the Canon a/s service center for proper clarification?

May be four years is enough for you to get a new battery patterning to the duration of the battery.
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March 21, 2012 12:31:37 AM

Most at times it is hard to identify which electronics product (like camera, tv and even notebook) is the best in terms of durability. Sometimes, i just believe that getting the best Camera is like winning a lottery. I am saying this because i got a Nikon camera that i bought for over five years now, and it is just ok.
April 6, 2012 7:28:23 AM


For the Li-ion, which is one of the best energy densities, no memory effect, and a slow loss of charge when not in use.
May 20, 2012 11:39:50 AM

Did you ever get this resolved? As you mentioned it's occurring with both batteries, it's more likely the charger no longer charging to full capacity.
!