04-16-2019 12:34 PM
Canon Rebel T2i worked for 5+ yrs. Dies. Full OEM battery, when switched on, blinks once and nothing. Looked online, tried micro-switches, nothing.
After some time, bought another Canon Rebel T2i, I placed my original OEM battery into the new one: works. So it's not the battery. Used it for a day. Next day, I switched it on, blinks once, nothing. My conclusion is that the old OEM Canon battery pack LP-E8 killed both of my cameras. Be warned!!! And if someone can charm in with some input. Super appreciated.
04-16-2019 01:23 PM - edited 04-17-2019 08:16 AM
That would be a bizarre coincidence for sure. Do you have just the one battery? How old is it? I could see a situation where the battery might appear to be fully charged, but only have what I think is referred to as a "surface charge". The voltage appears OK but the amperage that actually does the work just isn't there.
Have you tried another, newer battery in either camera?
04-16-2019 02:15 PM
04-16-2019 02:43 PM
You probably have a severely compromised battery, and likely a nearly dead cell, within your old battery. Like other common batteries, Lithium Ion types accept a finite number of charge/discharge cycles before they become fatigued and in some cases one of the individual cells that make up the battery will develop severe issues leading to intermittent/odd device problems.
It is very difficult for a battery to damage a device other than leakage which was common in some older cells. Otherwise, you won't get component killing excessive voltage out of a battery except for poorly designed equipment where the rechargeable battery also has to function as a filter and regulator when the device is being powered by an AC adapter. On a related note, this is why it can be expensive to "jump start" a modern vehicle that is suffering from a defective battery because in the vehicle the battery also acts to absorb voltage surges that can otherwise damage the many controllers in a modern vehicle.
With some types of rechargeable batteries, it is possible to reverse the polarity of a single cell when heavily discharging a battery with unmatched cells but it won't result in the entire battery polarity being reversed. Reversed polarity is another way to kill equipment but your LP-E8 can't do that unless someone rebuilds it and reverses the cells during rebuilding.
I suspect if you load tested your current batetery, and in terms of LioN life, elderly original battery that it would fail miserably. During device start up, at points there will be a heavier current draw and your old battery is probably falling below the critical voltage level when this happens causing the device to not operate. Modern cars are VERY prone to this issue and can do some interesting things when battery voltage drops below a critical value during start up.
04-16-2019 02:54 PM
Just buy a new battery, there is just about no chance that a battery can fail and damage the camera apart from corrosion.
If it is the original one that is 5 years old then it has almost certainly reached the end of its life.
04-17-2019 03:32 PM
04-18-2019 11:19 AM
"I'm gonna buy a brand spanking new battery soon,..."
Good idea. But make sure you get a real Canon battery. There are very close looking counterfeit batteries and third party batteries. Do not buy one of them. If you did, get rid of it. You problem is 90% the battery for whatever the reason.
04-18-2019 12:08 PM
No two cameras are exactly the same and your new camera may have slightly less current draw AND also cleaner battery contacts so something that didn't work at all in your old camera might work marginally/intermittently in the new camera.
I just got finished working through a similar electronics issue with my new pair of Hensel studio flashes where proximity to another WiFi device caused one of the flashes to slightly delay firing. Apparently some WiFi devices REALLY put out a strong signal unlike the Hensel strobes when one is acting as the access point.
04-22-2019 09:56 PM
04-23-2019 09:40 AM
When you state in your last post, "It's def possible, both cameras were on their way out" do you mean that the new battery is not working in either camera? If so maybe your battery charger is the common fault and the battery really isn't being charged properly to a full charge. If the camera was truly draining the battery in one blink you would have enough smoke to look like a mini version of a Tesla car fire. That little battery can source over a hundred amps for a brief pulse and if your camera was dissipating this full charge so quickly it would turn into a crispy critter with lots of smoke and smell.