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3rd party batteries for A7 series

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dCap View Drop Down
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Post Options Post Options   Quote dCap Quote  Post ReplyReply Direct Link To This Post Topic: 3rd party batteries for A7 series
    Posted: 09 January 2021 at 12:20
Please do not use batteries that swell.

Li-Ion is not a fun thing when it goes wrong.
Look up Samsung Galaxy Note Exploding bBattery on any search engine and watch the videos.
These are not pranks.

If you value the home you live in, and the people that are in it, then find a safe place to dispose of any battery that swells (today, like right now) and buy a proper replacement - saving a few pennies on a explosion and fire risk is not worth losing your home over.
Walk out if it doesn't feel right
I can tell you're only lying
If you've got something better tonight
Then don't mess up my mind with your crying
Just Walk Out In The Rain
Eric Clapton, 1978
 



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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 09 January 2021 at 09:13
Originally posted by QuietOC QuietOC wrote:

Li-ions seem to prefer partial charges. Apple iOS devices purposely will not fully charge themselves. "To reduce battery aging, iPhone learns from your daily charging routine so it can wait to finish charging past 80% until you need to use it."
As usual, Apple was late to introduce this. My Sony phones did this years before Apple introduced this. But Apple is great in marketing these things.

Car batteries also do not fully load btw.

Originally posted by Miranda F Miranda F wrote:

When they swell up they're usually not good

Why not follow me on Instagram? @Addy_101
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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 09 January 2021 at 01:16
Originally posted by woodrim woodrim wrote:

Originally posted by Miranda F Miranda F wrote:

... When they swell up they're usually not good, ...


What?      They swell? I've noticed one of my batteries suddenly fitting more snugly in the camera. Is that what is happening?

Yep. They will go on working for a while but I wouldn't use them in anything expensive. When they deteriorate that way they can overheat.
There used to be warnings of Lithium cells catching fire on charging, and they always recommended never to charge them in situ, though nowadays charging in situ is pretty much unavoidable with phones.
Miranda F & Sensorex, Sony A7Rii, A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras ...
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Post Options Post Options   Quote woodrim Quote  Post ReplyReply Direct Link To This Post Posted: 08 January 2021 at 19:50
Originally posted by Miranda F Miranda F wrote:

... When they swell up they're usually not good, ...


What?      They swell? I've noticed one of my batteries suddenly fitting more snugly in the camera. Is that what is happening?
Regards,

woodrim
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Post Options Post Options   Quote woodrim Quote  Post ReplyReply Direct Link To This Post Posted: 08 January 2021 at 19:48
Originally posted by Miranda F Miranda F wrote:

Originally posted by woodrim woodrim wrote:

I do not know enough about electronics to understand how to evaluate batteries. The internal resistance factor is one I didn't know about but may explain some of my failed attempts a couple of decades ago to extend flash life.

I'm wondering if Miranda has any idea of how well
this battery would work?


Probably very well, if you use a short lead designed for charging and not a generic one (those tend to have very thin wire ...)


Thank you. During the nesting season at the local swamp, I can spend lots of time and take hundreds of images. I usually have the camera/lens on a monopod, so attaching a large, external battery like that isn't much of an inconvenience. If I use the auxiliary input, the external battery will only recharge my A7II battery when turning the camera off. That helps, but I wish it could power the camera like with some of the other Sony models. However, there are also dummy battery inserts that can be fed by the external battery and power the camera.
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woodrim
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Miranda F View Drop Down
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 08 January 2021 at 17:40
Originally posted by woodrim woodrim wrote:

Originally posted by dCap dCap wrote:

Pretty sure long term battery performance is based on cycles. How many times it has been charged and drained (not full cycles, just any cycles). Not the old school tech of preferring to drain and charge from empty (I believe that issue is now not a thing, in modern tech). So a new one that has been in a box unused (as long as it has been stored 'okay') should be fine. Chemically it hasn't done the charge up/down cycling which will eventually run the battery down.

If you're low frame rate I cannot see them really reducing in normal (non-pro-frame-rate) usage.

This is based on it being made properly, so by Sony. Or one of the better 3rd party versions.


Thanks. Interesting that many people report that the cheap ones lose capacity over time. My two Sony batteries, ten years apart in manufacture and use, perform the same.

I've not noticed much of that. When they swell up they're usually not good, and letting them go flat kills them pretty effectively, but if you keep recharging them before they've gone below 50% and never leave them in the camera for long periods, they are pretty reliable.
Miranda F & Sensorex, Sony A7Rii, A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras ...
 



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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 08 January 2021 at 17:38
Originally posted by woodrim woodrim wrote:

I do not know enough about electronics to understand how to evaluate batteries. The internal resistance factor is one I didn't know about but may explain some of my failed attempts a couple of decades ago to extend flash life.

I'm wondering if Miranda has any idea of how well
this battery would work?


Probably very well, if you use a short lead designed for charging and not a generic one (those tend to have very thin wire ...)
Miranda F & Sensorex, Sony A7Rii, A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras ...
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 08 January 2021 at 17:20
Li-ions seem to prefer partial charges. Apple iOS devices purposely will not fully charge themselves. "To reduce battery aging, iPhone learns from your daily charging routine so it can wait to finish charging past 80% until you need to use it."
Sony A7III A7RII NEX-5T HVL-F45RM LA-EA3 LA-EA4r MB-IV MC-11 EF-E II TLT ROKR MD-NEX KR-NEX DA-NEX
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Post Options Post Options   Quote woodrim Quote  Post ReplyReply Direct Link To This Post Posted: 08 January 2021 at 16:43
Originally posted by dCap dCap wrote:

Pretty sure long term battery performance is based on cycles. How many times it has been charged and drained (not full cycles, just any cycles). Not the old school tech of preferring to drain and charge from empty (I believe that issue is now not a thing, in modern tech). So a new one that has been in a box unused (as long as it has been stored 'okay') should be fine. Chemically it hasn't done the charge up/down cycling which will eventually run the battery down.

If you're low frame rate I cannot see them really reducing in normal (non-pro-frame-rate) usage.

This is based on it being made properly, so by Sony. Or one of the better 3rd party versions.


Thanks. Interesting that many people report that the cheap ones lose capacity over time. My two Sony batteries, ten years apart in manufacture and use, perform the same.
Regards,

woodrim
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dCap View Drop Down
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Post Options Post Options   Quote dCap Quote  Post ReplyReply Direct Link To This Post Posted: 08 January 2021 at 16:31
Pretty sure long term battery performance is based on cycles. How many times it has been charged and drained (not full cycles, just any cycles). Not the old school tech of preferring to drain and charge from empty (I believe that issue is now not a thing, in modern tech). So a new one that has been in a box unused (as long as it has been stored 'okay') should be fine. Chemically it hasn't done the charge up/down cycling which will eventually run the battery down.

If you're low frame rate I cannot see them really reducing in normal (non-pro-frame-rate) usage.

This is based on it being made properly, so by Sony. Or one of the better 3rd party versions.
Walk out if it doesn't feel right
I can tell you're only lying
If you've got something better tonight
Then don't mess up my mind with your crying
Just Walk Out In The Rain
Eric Clapton, 1978
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Post Options Post Options   Quote pegelli Quote  Post ReplyReply Direct Link To This Post Posted: 08 January 2021 at 16:09
There was a thread about real/fake FW50 batteries some time ago

If you follow the link you can check the serial number as a first check. But beware, my two counterfeit batteries came back OK after the serial number checkon the website and it was other attributes member Hawk noticed when I sent him photos of the batteries that gave it away.
Mind the bandwidth of others, don't link pictures larger then 1024 wide or 960 pix high, see here
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woodrim View Drop Down
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Post Options Post Options   Quote woodrim Quote  Post ReplyReply Direct Link To This Post Posted: 08 January 2021 at 15:58
I do not know enough about electronics to understand how to evaluate batteries. The internal resistance factor is one I didn't know about but may explain some of my failed attempts a couple of decades ago to extend flash life.

I'm wondering if Miranda has any idea of how well
this battery would work?
Regards,

woodrim
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woodrim View Drop Down
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Post Options Post Options   Quote woodrim Quote  Post ReplyReply Direct Link To This Post Posted: 08 January 2021 at 15:51
Originally posted by pegelli pegelli wrote:

Originally posted by woodrim woodrim wrote:

Has anyone encountered counterfeit Sony batteries?
Yup, I've got two. Capacity wise they're as good (or bad) as the genuine Sony FW50 batteries, only the case is a bit more flimsy.


I've just purchased a Sony, in-box battery that supposedly hasn't been used but no mention of how long it has been sitting unused. I was wondering how to easily tell whether it's genuine or not. I'll compare to the two slightly different (ten years apart) Sony that I have. Hoping for the best at a total cost of $28.
Regards,

woodrim
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Post Options Post Options   Quote Wētāpunga Quote  Post ReplyReply Direct Link To This Post Posted: 07 January 2021 at 21:47
Originally posted by QuietOC QuietOC wrote:

...
I have four used Wasabi BTR-FW50-JWP. I haven't noticed them being worse than the Sony ones.


I have found Wasabi to be very reliable and not noticeably worse than Sony. They're the only 3rd party option I trust.
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