Battery charging question
May 31, 2015 17:06:27 #
smitty716 wrote:
T3i , bought a grip and it came with 2 1700 batteries . My stock charger only charges them to 1000 , what charger do I need to fully charge them? Been looking but they don't say . orni don't understand there way of putting it .
Thanks
Thanks
If a battery had only two contacts (like rechargeable AA batteries) it would be reasonable to expect that any charger would charge it to capacity.
However, most rechargeable camera batteries have three or more contacts for a reason - to signal the state of charge to the camera and to the dedicated charger. This prevents overheating and overcharging of the battery.
It is entirely possible that you will need to get a dedicated charger for the 1700 mAh batteries since the Canon charger may be misreading the charge state (based on their own batteries' limits of 1120 mAh) and switching to trickle charge mode prematurely.
May 31, 2015 18:24:55 #
selmslie wrote:
If a battery had only two contacts (like rechargea... (show quote)
Charge level is still indicated by voltage, regardless of the capacity of the battery. Voltage for batteries for the same application will be the same regardless of the capacity.
May 31, 2015 19:07:10 #
smitty716
Loc: Central, Arkansas
OK , my mistake it is a canon charger and it says 1120 mah not 1000, but it show full charge before the new batteries are charged. It charges the factory canon 1120 battery fine. I'll get a new charger and try it. If that don't work I'll get more batteries. Thank you all, as always you have been a big help.
May 31, 2015 19:10:14 #
smitty716 wrote:
OK , my mistake it is a canon charger and it says 1120 man not 1000, but it show full charge before the new batteries are charged. It charges the factory canon 1120 battery fine. I'll get a new charger and try it. If that don't work I'll get more batteries. Thank you all, as always you have been a big help.
Not doubting you in any way, but how do you know it is not fully charged or that it can in fact hold the 1700 mAh charged?
Just wondering what is telling you that it isn't working properly.
Many thanks, and good luck!
May 31, 2015 19:21:47 #
smitty716
Loc: Central, Arkansas
The battery says 1700mah on it and the camera only shows half charged with them in, with canon battery it shows full charged
Peterff wrote:
Not doubting you in any way, but how do you know it is not fully charged or that it can in fact hold the 1700 mAh charged?
Just wondering what is telling you that it isn't working properly.
Many thanks, and good luck!
Just wondering what is telling you that it isn't working properly.
Many thanks, and good luck!
May 31, 2015 19:27:06 #
smitty716 wrote:
The battery says 1700mah on it and the camera only shows half charged with them in, with canon battery it shows full charged
Thanks, that helps...., although it could still be the battery not meeting its stated spec...., unless you know it can be charged to its stated capacity. It would not be the first time.
May 31, 2015 19:30:06 #
smitty716
Loc: Central, Arkansas
I heard somewhere you need to completely drain a battery sometimes to get the to work right is that true ?
May 31, 2015 19:35:07 #
I suspect that more than likely a cheap third party battery labelled as 1700mAH doesn't have that capacity rather than the charger doesn't charge it fully.
May 31, 2015 19:36:05 #
smitty716
Loc: Central, Arkansas
That makes since too, didnt think about thatquote=BebuLamar]I suspect that more than likely a cheap third party battery labelled as 1700mAH doesn't have that capacity rather than the charger doesn't charge it fully.[/quote]
May 31, 2015 19:41:00 #
smitty716 wrote:
The battery says 1700mah on it and the camera only shows half charged with them in, with canon battery it shows full charged
I recently replaced an 11.25V mAh Asus battery that was beginning to fail with a 10.8V 1700 mAh battery that worked fine for three months. For some reason, the larger battery discharged completely last month and will now only charge to about 80%. I got another 1700 mAh battery and it charges fine to 100% (so far, so good).
Batteries are not simple single cell structures, as you would see if you take apart a car battery - it is a "battery" of cells. Sometimes one cell will fail or misbehave and logic built into the computer or camera will try to compensate but you will not recover the full functionality. A device that uses a battery that can charge it to a particular voltage level will continue to function until the voltage drops to some specific level below the maximum.
So you can't be sure that the battery is defective. It might be, but maybe the charger is just not compatible.
May 31, 2015 19:53:54 #
May 31, 2015 19:56:54 #
smitty716 wrote:
I heard somewhere you need to completely drain a battery sometimes to get the to work right is that true ?
That was true with NiCad batteries which have a memory of sorts due to their characteristics. If, for example, you recharged it when it was only 50% discharged then the next time it would not discharge below that level. Allowing the battery to go completely dead and then recharging would allow it to fully discharge. Until the next partial discharge anyway. This is not a concern with lithium ion batteries.
May 31, 2015 21:38:50 #
LFingar wrote:
That was true with NiCad batteries which have a memory of sorts due to their characteristics. If, for example, you recharged it when it was only 50% discharged then the next time it would not discharge below that level. Allowing the battery to go completely dead and then recharging would allow it to fully discharge. Until the next partial discharge anyway. This is not a concern with lithium ion batteries.
In fact, it is better to not fully discharge lithium batteries. Full discharge decreases their life in number of cycles.
You can almost count on Chinese brand X batteries being 55% of the capacity of Japanese ones.
Jun 1, 2015 06:10:21 #
LFingar wrote:
Charge level is still indicated by voltage, regardless of the capacity of the battery. Voltage for batteries for the same application will be the same regardless of the capacity.
Are you sure about that? Some batteries, like NiCD will keep their voltage until almost completely discharged, but they are 1.2 v Alkaline batteries will drop voltage as they discharge.
Jun 1, 2015 06:12:09 #
smitty716 wrote:
T3i , bought a grip and it came with 2 1700 batteries . My stock charger only charges them to 1000 , what charger do I need to fully charge them? Been looking but they don't say . orni don't understand there way of putting it .
Thanks
Thanks
Use Eneloop or Powerex batteries and a Maha Smart Charger:
http://www.amazon.com/Powerex-Maha-MH-C801D-Eight-Charger/dp/B003OU51LG/ref=sr_1_3?ie=UTF8&qid=1433152770&sr=8-3&keywords=maha+battery+charger
This charger will charge each battery charged and monitored individually.
You will get great service from both.
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